Touch display panel, display device and manufacturing method

Abstract

The present invention discloses a touch display panel, a display device and a manufacturing method. The touch display panel includes a color film substrate, an array substrate and a liquid crystal layer arranged between the color film substrate and the array substrate. A touch layer is arranged on the side of the color film substrate away from the array substrate. The touch layer includes a first touch signal line. A second touch signal line and a display signal line are arranged on the array substrate. The touch display panel is provided with a circuit board and a conductive column. One end of the conductive column is electrically connected to the first touch signal line, and the other end of the conductive column is electrically connected to the second touch signal line. The second touch signal line and the display signal line are both electrically connected to the circuit board. The first touch signal line of the touch layer on the color film substrate is electrically connected to the second touch signal line on the array substrate through the conductive column, and the second touch signal line is bound to the circuit board on the array substrate, so that there is no need to set a binding area on the color film substrate, so that the touch area and the display area can be made larger and the frame can be made narrower.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a touch display panel, a display device and a manufacturing method thereof. Background Art

[0002] Liquid crystal display devices have been widely used in mobile terminals such as mobile phones and large-size display panels such as flat-panel televisions. Liquid crystal display devices generally include an array substrate, a color filter substrate, and a liquid crystal layer sandwiched in between. Pixel electrodes and common electrodes are formed on the substrate, and the rotation of the liquid crystal molecules of the liquid crystal layer is controlled by applying a driving voltage between the two, thereby changing the transmittance. Embedding a touch panel in a liquid crystal display device can further form a touch display device. The touch display device can detect a user's finger or other object placed on its surface, and can identify the position where the finger or object is placed. The integration of the two can reduce the total cost of electronic products. According to the different integration technologies of the touch panel integrated in the liquid crystal display device, the touch display panel can be divided into an OGS (One Glass Solution) panel, an On-Cell panel, and an In-Cell panel. Among them, the On-Cell panel is equipped with a touch sensor on the liquid crystal display panel, which is much less difficult than the In-Cell technology and is widely used.

[0003] At present, the borders of touch display devices are gradually developing from narrow borders to full-screen borderless, and products with narrow borders or even borderless are becoming more and more popular among consumers.

[0004] Figure 1 is a schematic diagram of the planar structure of a touch display device in the prior art, Figure 2 is a schematic diagram of a cross-sectional structure of a touch display device in the prior art, such as Figure 1 and Figure 2As shown, in the prior art, a touch display device includes a color film substrate 10, an array substrate 20 arranged relative to the color film substrate 10, and a liquid crystal layer (not shown) located between the color film substrate 10 and the array substrate 20. The touch display device has a display area 101, a non-display area 102, and a touch area 103. In order to increase the user's touch experience, the touch area 103 is usually required to be larger than the display area 101, that is, the touch area 103 completely covers the display area 101 and also partially covers the non-display area 102. A touch layer 40 for transmitting touch sensing signals is provided on the side of the color film substrate 10 close to the user. The touch layer 40 is provided with a plurality of touch traces (not shown) and a plurality of touch signal lines 41. The plurality of touch signal lines 41 are coupled to a touch circuit board 51. The array substrate 20 is provided with a display signal line 23 on the side close to the color film substrate 10. The display signal line 23 is coupled to a display circuit board 52. The touch circuit board 51 and the display circuit board 52 are both flexible circuit boards, which are located in different planes. In order to make the non-display area 102 of the touch display device smaller, that is, the display area 101 and the touch area 103 have larger areas, this requires that the line width and line spacing of the touch signal line 41 on the side of the color film substrate 10 close to the user be smaller and the touch binding area be shorter. However, due to the impedance requirements, the line width and line spacing of the touch signal line 41 have reached the limit and cannot be thinner. In addition, the touch binding area cannot be made shorter because it needs to be bound to the touch circuit board 51. Due to the limitations of the touch signal line 41 and the touch binding area, the touch area 103 cannot be made larger, and thus the size of the display area 101 cannot be made larger. Currently, there is no better way to reduce the border of the touch display device.

[0005] Therefore, how to increase the area of ​​the display area 101 of the touch display device without reducing the line width and line spacing of the touch signal line 41 in the non-display area 102 of the touch display device and the size of the touch binding area so that the touch display device has a narrower frame is a major problem in the current industry. Summary of the invention

[0006] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a touch display panel, a display device and a manufacturing method to solve the problem in the prior art that the frame of the display device cannot be reduced, so that the touch area and the display area cannot be made larger.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] The present invention provides a touch display panel, comprising a color film substrate, an array substrate arranged opposite to the color film substrate, and a liquid crystal layer arranged between the color film substrate and the array substrate, wherein a touch layer is arranged on a side of the color film substrate away from the array substrate, the touch layer comprises a first touch signal line, a second touch signal line and a display signal line are arranged on the array substrate, the touch display panel is provided with a circuit board and a conductive column, one end of the conductive column is electrically connected to the first touch signal line, the other end of the conductive column is electrically connected to the second touch signal line, and the second touch signal line and the display signal line are both electrically connected to the circuit board.

[0009] Furthermore, the conductive column includes a first conductive part and a second conductive part, the first conductive part passes through the color film substrate and is exposed from the upper and lower bottom surfaces of the color film substrate, the second conductive part is located between the color film substrate and the array substrate, and the first touch signal line, the first conductive part, the second conductive part and the second touch signal line are electrically connected in sequence.

[0010] Furthermore, a through hole corresponding to the first conductive part is provided on the color film substrate, the first conductive part is provided in the through hole and both ends of the first conductive part are exposed from the through hole; the conductive column is provided in the non-display area of ​​the touch display panel, or the conductive column is provided in the display area of ​​the touch display panel and corresponds to the black matrix on the color film substrate.

[0011] Furthermore, the conductive column is disposed in a non-display area of ​​the touch display panel, and the first conductive portion is located on a side surface of the color film substrate.

[0012] Furthermore, the number of the circuit board is one, and the second touch signal line and the display signal line share the same circuit board.

[0013] Furthermore, there are multiple circuit boards, and the circuit boards include a touch circuit board and a display circuit board. The second touch signal line is electrically connected to the touch circuit board, and the display signal line is electrically connected to the display circuit board.

[0014] Furthermore, there are two touch circuit boards respectively arranged on both sides of the display circuit board, part of the second touch signal lines are electrically connected to one of the adjacent touch circuit boards, and another part of the second touch signal lines are electrically connected to another adjacent touch circuit board.

[0015] The present invention further provides a display device, comprising the touch display panel as described above.

[0016] The present invention also provides a method for manufacturing a touch display panel, the manufacturing method comprising:

[0017] Providing a color film substrate, the color film substrate having a first surface and a second surface opposite to each other, and punching holes on the first surface of the color film substrate to form through holes;

[0018] Covering the first surface or the second surface of the color filter substrate with a metal layer film and filling the through hole;

[0019] Etching the metal layer film and forming a first conductive portion in the through hole;

[0020] A touch layer is formed on the first surface or the second surface of the color film substrate, wherein a first touch signal line of the touch layer is electrically connected to one end of the first conductive portion;

[0021] Providing an array substrate, on which a second touch signal line is disposed;

[0022] Providing a liquid crystal layer, and performing a box process on the color filter substrate, the array substrate, and the liquid crystal layer, wherein the side of the color filter substrate where the touch layer is formed is away from the array substrate;

[0023] Before the boxing process, a second conductive portion is provided on the color film substrate or the array substrate, and after the boxing process, two ends of the second conductive portion are electrically connected to the first conductive portion and the second touch signal line respectively; or, after the boxing process, a second conductive portion is formed between the color film substrate and the array substrate, and two ends of the second conductive portion are electrically connected to the first conductive portion and the second touch signal line respectively.

[0024] The present invention also provides a method for manufacturing a touch display panel, the manufacturing method comprising:

[0025] Providing a color film substrate, the color film substrate having a first surface and a second surface opposite to each other, and punching holes on the first surface of the color film substrate to form blind holes;

[0026] Covering the first surface of the color filter substrate with a metal layer film and filling the blind hole;

[0027] Etching the metal layer film and forming a first conductive portion in the blind hole;

[0028] Grinding the second surface of the color filter substrate so that the first conductive portion is exposed from the second surface;

[0029] A touch layer is formed on the first surface or the second surface of the color film substrate, wherein a first touch signal line of the touch layer is electrically connected to one end of the first conductive portion;

[0030] Providing an array substrate, on which a second touch signal line is disposed;

[0031] Providing a liquid crystal layer, and performing a box process on the color filter substrate, the array substrate, and the liquid crystal layer, wherein the side of the color filter substrate where the touch layer is formed is away from the array substrate;

[0032] Before the boxing process, a second conductive portion is provided on the color film substrate or the array substrate, and after the boxing process, two ends of the second conductive portion are electrically connected to the first conductive portion and the second touch signal line respectively; or, after the boxing process, a second conductive portion is formed between the color film substrate and the array substrate, and two ends of the second conductive portion are electrically connected to the first conductive portion and the second touch signal line respectively.

[0033] The beneficial effect of the present invention is that: by arranging a conductive column in the touch display panel, the conductive column electrically connects the first touch signal line of the touch layer on the color film substrate with the second touch signal line on the array substrate, and then the second touch signal line is bound to the circuit board by the array substrate, so there is no need to set a binding area on the color film substrate for conducting the signal to the touch layer, so that the touch area and the display area can be made larger and the frame can be made narrower. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the planar structure of a touch display device in the prior art.

[0035] Figure 2 It is a schematic diagram of the cross-sectional structure of a touch display device in the prior art.

[0036] Figure 3 FIG. 1 is a schematic diagram of a planar structure of a touch display device in Embodiment 1 of the present invention.

[0037] Figure 4 This is one of the cross-sectional structural schematic diagrams of the touch display device in the first embodiment of the present invention.

[0038] Figure 5 This is a second schematic cross-sectional structure diagram of the touch display device in the first embodiment of the present invention.

[0039] Figure 6a-6f This is one of the manufacturing flow charts of the touch display panel in the first embodiment of the present invention.

[0040] Figure 7a-7e This is the second flowchart of the manufacturing process of the touch display panel in the first embodiment of the present invention.

[0041] Figure 8 It is a schematic diagram of the planar structure of a touch display device in the second embodiment of the present invention.

[0042] Fig. 9This is one of the cross-sectional structural schematic diagrams of the touch display device in the third embodiment of the present invention.

[0043] Fig.10 This is the second schematic cross-sectional structure diagram of the touch display device in the third embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the touch display panel, display device and manufacturing method proposed in the present invention are described in detail as follows in conjunction with the accompanying drawings and preferred embodiments:

[0045] [Example 1]

[0046] Figure 3 FIG. 1 is a schematic diagram of a planar structure of a touch display device in Embodiment 1 of the present invention. Figure 4 This is one of the schematic cross-sectional structure diagrams of the touch display device in the first embodiment of the present invention. Figure 5 This is a second schematic cross-sectional structure diagram of the touch display device in the first embodiment of the present invention.

[0047] like Figures 3 to 5 As shown, a touch display panel provided in a first embodiment of the present invention comprises a display area 101, a non-display area 102 and a touch area 103. In order to enhance the user's touch experience, the touch area 103 usually needs to be larger than the display area 101, that is, the touch area 103 completely covers the display area 101 and also partially covers the non-display area 102.

[0048] The touch display panel includes a color film substrate 10, an array substrate 20 disposed opposite to the color film substrate 10, and a liquid crystal layer 30 disposed between the color film substrate 10 and the array substrate 20. A touch layer 40 is disposed on the side of the color film substrate 10 away from the array substrate 20, and the touch layer 40 includes a first touch signal line 411, and the first touch signal line 411 is located in the non-display area 102. Of course, the touch layer 40 may also include a plurality of touch traces (not shown) to form a self-capacitive touch mode or a mutual-capacitive touch mode, and the touch traces are located in the touch area 103. A second touch signal line 412 and a display signal line 23 are provided on the array substrate 20, and the touch display panel is provided with a circuit board 50 and a conductive column 60, one end of the conductive column 60 is electrically connected to the first touch signal line 411, and the other end of the conductive column 60 is electrically connected to the second touch signal line 412, and the second touch signal line 412 and the display signal line 23 are both electrically connected to the circuit board 50, so that a touch signal is applied to the touch layer 40 and a screen display signal is applied to the array substrate 20 through the circuit board 50.

[0049] Furthermore, if Figure 5As shown, the conductive column 60 includes a first conductive portion 61 and a second conductive portion 62. The first conductive portion 61 passes through the color film substrate 10 and is exposed from the upper and lower bottom surfaces of the color film substrate 10. The second conductive portion 62 is located between the color film substrate 10 and the array substrate 20. The first touch signal line 411, the first conductive portion 61, the second conductive portion 62 and the second touch signal line 412 are electrically connected in sequence.

[0050] In this embodiment, the conductive column 60 is disposed in the non-display area 102 of the touch display panel, and a through hole 104 corresponding to the first conductive part 61 is disposed on the color film substrate 10. The first conductive part 61 is disposed in the through hole 104 and both ends of the first conductive part 61 are exposed from the through hole 104, that is, the first conductive part 61 passes through the color film substrate 10 through the through hole 104 and is exposed from the upper and lower bottom surfaces of the color film substrate 10. The first conductive part 61 can be made of metal, and the second conductive part 62 can be made of conductive glue, anisotropic glue, or a conductive spacer ball (SP) disposed in the frame sealant. Of course, in other embodiments, the conductive pillar 60 may also be disposed in the display area 101 of the touch display panel and correspond to the black matrix 11 on the color film substrate 10, so that the area of ​​the touch area 103 and the display area 101 can be further increased, so that the frame can be made narrower, but since the second touch signal line 412 also needs to extend into the display area 101, and the array substrate 20 is provided with a scan line and a data line, it is not convenient to wire the second touch signal line 412. Among them, the first conductive part 61 can be made of metal, and the second conductive part 62 can be a conductive support pillar (PS) disposed in the display area 101.

[0051] In this embodiment, the number of the circuit board 50 is one, and the second touch signal line 412 and the display signal line 23 share one circuit board 50, thereby reducing the number of flexible circuit boards and the number of binding times.

[0052] In this embodiment, Figure 5 As shown, positive liquid crystal molecules are used in the liquid crystal layer 30, that is, liquid crystal molecules with positive dielectric anisotropy. In the initial state, the positive liquid crystal molecules in the liquid crystal layer 30 are aligned parallel to the color filter substrate 10 and the array substrate 20, and the alignment direction of the positive liquid crystal molecules close to the color filter substrate 10 is parallel or anti-parallel to the positive liquid crystal molecules close to the array substrate 20.

[0053] The color filter substrate 10 is provided with color resist layers 12 arranged in an array and a black matrix 11 separating the color resist layers 12. The color resist layers 12 include color resist materials of red (R), green (G), and blue (B), and correspondingly form sub-pixels of red (R), green (G), and blue (B).

[0054] The array substrate 20 is formed into a plurality of pixel units by a plurality of scan lines and a plurality of data lines which are insulated and crossed from each other on the side facing the liquid crystal layer 30. A pixel electrode 22 and a thin film transistor are provided in each pixel unit. The pixel electrode 22 is electrically connected to the data line of the adjacent thin film transistor through the thin film transistor. The thin film transistor includes a gate, an active layer, a drain and a source. The gate and the scan line are located in the same layer and are electrically connected. The gate and the active layer are separated by an insulating layer. The source is electrically connected to the data line, and the drain is electrically connected to the pixel electrode 22 through a contact hole.

[0055] like Figure 5 As shown, in this embodiment, a common electrode 21 is further provided on the side of the array substrate 20 facing the liquid crystal layer 30. The common electrode 21 and the pixel electrode 22 are located in different layers and insulated and isolated by an insulating layer. The common electrode 21 can be located above or below the pixel electrode 22 ( Figure 5 As shown in the figure, the common electrode 21 is located below the pixel electrode 22). Preferably, the common electrode 21 is a planar electrode arranged on the entire surface, and the pixel electrode 22 is a block electrode arranged in each pixel unit or a slit electrode having a plurality of electrode strips to form a fringe field switching mode (Fringe Field Switching, FFS). Of course, in other embodiments, the pixel electrode 22 and the common electrode 21 may be located on the same layer, but the two are insulated and isolated from each other, and the pixel electrode 22 and the common electrode 21 may each include a plurality of electrode strips, and the electrode strips of the pixel electrode 22 and the electrode strips of the common electrode 21 are arranged alternately with each other to form an in-plane switching mode (In-Plane Switching, IPS); or, in other embodiments, the array substrate 20 is provided with a pixel electrode 22 on the side facing the liquid crystal layer 30, and the color film substrate 10 is provided with a common electrode 21 on the side facing the liquid crystal layer 30 to form a TN mode or a VA mode. As for other introductions to the TN mode and the VA mode, please refer to the prior art, which will not be repeated here.

[0056] Of course, an upper polarizing plate is also provided on the color filter substrate 10 , and a lower polarizing plate is also provided on the array substrate 20 . The transmission axis of the upper polarizing plate is perpendicular to the transmission axis of the lower polarizing plate.

[0057] The color filter substrate 10 and the array substrate 20 may be made of glass, acrylic, polycarbonate, etc. The common electrode 21 and the pixel electrode 22 may be made of indium tin oxide (ITO) or indium zinc oxide (IZO), etc.

[0058] This embodiment also provides a method for manufacturing a touch display panel, and the manufacturing method is used to manufacture the touch display panel as described above. Figure 6a-6f As shown, the manufacturing method comprises:

[0059] like Figure 6aand 6b As shown, a color filter substrate 10 is provided, and the color filter substrate 10 has a first surface and a second surface opposite to each other, that is, an upper surface and a lower surface. A hole is punched on the first surface of the color filter substrate 10 to form a through hole 104. In this embodiment, the hole is punched before the color filter substrate 10 is provided with a color resist layer 12 and a black matrix 11, that is, the color filter substrate 10 is punched when the color filter substrate 10 is plain glass. Of course, the hole can also be punched after the color filter substrate 10 is provided with a color resist layer 12 and a black matrix 11, but after the color resist layer 12 and the black matrix 11 are provided, the process of punching the color filter substrate 10 and subsequently forming the first conductive portion 61 may damage the color resist layer 12 and the black matrix 11.

[0060] like Figure 6c As shown, the metal layer film 1 is covered on the first surface or the second surface of the color filter substrate 10 and the through hole 104 is filled. Since the through hole 104 runs through the color filter substrate 10, and the color filter substrate 10 is plain glass at this time, and the color filter substrate 10 is not provided with a color resist layer 12 and a black matrix 11, etc., the metal layer film 1 can be covered on the first surface or the second surface of the color filter substrate 10. Preferably, before covering the metal layer film 1, a tape or other object can be attached to the other surface of the color filter substrate 10 covered with the metal layer film 1 to block one side of the through hole 104.

[0061] like Figure 6d and 6f As shown, the metal layer film 1 is etched and the first conductive portion 61 is formed in the through hole 104. Specifically, the photoresist layer 2 is covered on the metal layer film 1, and the photoresist layer 2 is exposed and developed through a mask to remove the excess photoresist layer 2, and then the metal layer film 1 is etched to retain the metal layer film 1 in the through hole 104 and form the first conductive portion 61.

[0062] A touch layer 40 is formed on the first surface or the second surface of the color filter substrate 10, and a first touch signal line 411 of the touch layer 40 is electrically connected to one end of the first conductive portion 61. Of course, the first touch signal line 411 and the touch electrode can also be formed together when the metal layer film 1 is etched.

[0063] An array substrate 20 is provided, and a second touch signal line 412 is set on the array substrate 20. Of course, the array substrate 20 is also provided with scan lines, data lines, thin film transistors, common electrodes 21, pixel electrodes 22 and display signal lines 23, etc. The second touch signal line 412 can be made of the same metal layer as the scan line or the data line.

[0064] A liquid crystal layer 30 is provided, and the color filter substrate 10 , the array substrate 20 and the liquid crystal layer 30 are processed into a box, and the side of the color filter substrate 10 where the touch layer 40 is formed is away from the array substrate 20 .

[0065] In this embodiment, after the boxing process, a second conductive portion 62 is formed between the color filter substrate 10 and the array substrate 20, and two ends of the second conductive portion 62 are respectively electrically connected to the first conductive portion 61 and the second touch signal line 412. For example, after the boxing process, a conductive glue is provided between the color filter substrate 10 and the array substrate 20, so as to electrically connect the first conductive portion 61 and the second touch signal line 412. Of course, the second conductive portion 62 may also be provided on the color filter substrate 10 or the array substrate 20 before the boxing process, and after the boxing process, the two ends of the second conductive portion 62 are respectively electrically connected to the first conductive portion 61 and the second touch signal line 412. For example, before the boxing process, a conductive support column or a conductive spacer ball in the sealing glue is provided on the color filter substrate 10 or the array substrate 20.

[0066] Finally, the second touch signal line 412 and the display signal line 23 are bound to the circuit board 50 .

[0067] This embodiment also provides another method for manufacturing a touch display panel, which is used to manufacture the touch display panel as described above. Figure 7a-7e As shown, the manufacturing method comprises:

[0068] like Figure 7a As shown, a color filter substrate 10 is provided, and the color filter substrate 10 has a first surface and a second surface relative to each other, that is, an upper surface and a lower surface. A hole is punched on the first surface of the color filter substrate 10 and a blind hole 105 is formed to facilitate better deposition of the metal layer film 1 in the hole. In this embodiment, the hole is punched before the color filter substrate 10 is provided with a color resist layer 12 and a black matrix 11, that is, the color filter substrate 10 is punched when the color filter substrate 10 is plain glass. Of course, the hole can also be punched after the color filter substrate 10 is provided with a color resist layer 12 and a black matrix 11, but after the color resist layer 12 and the black matrix 11 are provided, the process of punching the color filter substrate 10 and subsequently forming the first conductive part 61 may damage the color resist layer 12 and the black matrix 11, and the color resist layer 12 and the black matrix 11 also need to be provided on the first surface of the color filter substrate 10, because the second surface needs to be polished later.

[0069] like Figure 7b As shown, the metal layer film 1 is covered on the first surface of the color filter substrate 10 and the blind hole 105 is filled.

[0070] like Figure 7c-7d As shown, the metal layer film 1 is etched and the first conductive portion 61 is formed in the blind hole 105. Specifically, the photoresist layer 2 is covered on the metal layer film 1, the photoresist layer 2 is exposed and developed through a mask, the excess photoresist layer 2 is removed, and then the metal layer film 1 is etched to retain the metal layer film 1 in the blind hole 105 and form the first conductive portion 61.

[0071] like Figure 7e As shown, the second surface of the color filter substrate 10 is polished so that the first conductive portion 61 is exposed from the second surface and the blind hole 105 forms a through hole 104 .

[0072] A touch layer 40 is formed on the first surface or the second surface of the color filter substrate 10, and a first touch signal line 411 of the touch layer 40 is electrically connected to one end of the first conductive portion 61. Of course, the first touch signal line 411 and the touch electrode can also be formed together when the metal layer film 1 is etched.

[0073] An array substrate 20 is provided, and a second touch signal line 412 is set on the array substrate 20. Of course, the array substrate 20 is also provided with scan lines, data lines, thin film transistors, common electrodes 21, pixel electrodes 22 and display signal lines 23. The second touch signal line 412 and the display signal line 23 can be made of the same metal layer as the scan lines or data lines.

[0074] A liquid crystal layer 30 is provided, and the color filter substrate 10 , the array substrate 20 and the liquid crystal layer 30 are processed into a box, and the side of the color filter substrate 10 where the touch layer 40 is formed is away from the array substrate 20 .

[0075] In this embodiment, after the boxing process, a second conductive portion 62 is formed between the color filter substrate 10 and the array substrate 20, and two ends of the second conductive portion 62 are respectively electrically connected to the first conductive portion 61 and the second touch signal line 412. For example, after the boxing process, a conductive glue is provided between the color filter substrate 10 and the array substrate 20, so as to electrically connect the first conductive portion 61 and the second touch signal line 412. Of course, the second conductive portion 62 may also be provided on the color filter substrate 10 or the array substrate 20 before the boxing process, and after the boxing process, the two ends of the second conductive portion 62 are respectively electrically connected to the first conductive portion 61 and the second touch signal line 412. For example, before the boxing process, a conductive support column or a conductive spacer ball in the sealing glue is provided on the color filter substrate 10 or the array substrate 20.

[0076] Finally, the second touch signal line 412 and the display signal line 23 are bound to the circuit board 50 .

[0077] [Example 2]

[0078] Figure 8 FIG. 2 is a schematic diagram of a planar structure of a touch display device in Embodiment 2 of the present invention. Figure 8 As shown, the touch display panel and manufacturing method provided in the second embodiment of the present invention are similar to those in the first embodiment ( Figures 3 to 7e) are basically the same, except that, in this embodiment, there are multiple circuit boards 50, the circuit boards 50 include a touch circuit board 51 and a display circuit board 52, the second touch signal line 412 is electrically connected to the touch circuit board 51, and the display signal line 23 is electrically connected to the display circuit board 52.

[0079] Further, there are two touch circuit boards 51 and one display circuit board 52, and the two touch circuit boards 51 are respectively arranged on both sides of the display circuit board 52, and part of the second touch signal lines 412 are electrically connected to one of the adjacent touch circuit boards 51, and the other part of the second touch signal lines 412 are electrically connected to the other adjacent touch circuit board 51. Figure 8 The two touch circuit boards 51 are respectively arranged in the left half and the right half of the touch display panel. The second touch signal line 412 located in the left half of the touch display panel is electrically connected to the touch circuit board 51 located in the left half of the touch display panel, and the second touch signal line 412 located in the right half of the touch display panel is electrically connected to the touch circuit board 51 located in the right half of the touch display panel.

[0080] In this embodiment, two touch circuit boards 51 are provided and disposed respectively at the left half and the right half of the touch display panel, thereby facilitating the wiring of the second touch signal lines 412 and the display signal lines 23 .

[0081] It should be understood by those skilled in the art that the rest of the structure, working principle and manufacturing method of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0082] [Example 3]

[0083] Fig. 9 This is one of the schematic cross-sectional structure diagrams of the touch display device in the third embodiment of the present invention. Fig.10 FIG2 is a second schematic diagram of the cross-sectional structure of the touch display device in the third embodiment of the present invention. Fig. 9 and Fig.10 As shown, the touch display panel and manufacturing method provided in the third embodiment of the present invention are similar to those in the first embodiment ( Figures 3 to 7e ) or Example 2 ( Figure 8 ) are basically the same, except that, in this embodiment, the conductive column 60 is disposed in the non-display area 102 of the touch display panel, and the first conductive part 61 is located on the side of the color film substrate 10, that is, in this embodiment, the first conductive part 61 passes through the color film substrate 10 from the side of the color film substrate 10 and is electrically connected to the first touch signal line 411. The first conductive part 61 and the second conductive part 62 can both be made of conductive glue. Of course, the first conductive part 61 can also be made of metal, but it will increase the difficulty of manufacturing.

[0084] In this embodiment, by disposing the first conductive portion 61 on the side of the color filter substrate 10 and electrically connecting to the first touch signal line 411 from the side of the color filter substrate 10, the area of ​​the touch area 103 and the display area 101 can be further increased, so that the frame can be made narrower.

[0085] It should be understood by those skilled in the art that the rest of the structure, working principle and manufacturing method of this embodiment are the same as those of Embodiment 1 or 2, and will not be described in detail here.

[0086] The present invention further provides a display device, comprising the touch display panel as described above, the display device further comprising a backlight module, and the backlight module is arranged on a side of the touch display panel away from the touch layer 40 .

[0087] In this document, the directional words such as up, down, left, right, front, and back are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second" used in this document are only used to distinguish names and are not used to limit quantity and order.

[0088] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A touch display panel, characterized in that: The invention comprises a color film substrate (10), an array substrate (20) arranged opposite to the color film substrate (10), and a liquid crystal layer (30) arranged between the color film substrate (10) and the array substrate (20); a touch layer (40) is arranged on a side of the color film substrate (10) away from the array substrate (20); the touch layer (40) comprises a first touch signal line (411); a second touch signal line (412) and a display signal line (23) are arranged on the array substrate (20); the touch display panel is provided with a circuit board (50) and a conductive column (60); one end of the conductive column (60) is electrically connected to the first touch signal line (411); the other end of the conductive column (60) is electrically connected to the second touch signal line (412); the second touch signal line (412) and the display signal line (23) are both electrically connected to the circuit board (50); The conductive column (60) comprises a first conductive part (61) and a second conductive part (62), wherein the first conductive part (61) passes through the color film substrate (10) and is exposed from the upper and lower bottom surfaces of the color film substrate (10), and the second conductive part (62) is located between the color film substrate (10) and the array substrate (20), and the first touch signal line (411), the first conductive part (61), the second conductive part (62) and the second touch signal line (412) are electrically connected in sequence, and the second conductive part (62) adopts a conductive spacer ball arranged in the sealing glue.

2. The touch display panel according to claim 1, characterized in that: The color film substrate (10) is provided with a through hole (104) corresponding to the first conductive part (61); the first conductive part (61) is arranged in the through hole (104) and two ends of the first conductive part (61) are exposed from the through hole (104); the conductive column (60) is arranged in the non-display area (102) of the touch display panel, or the conductive column (60) is arranged in the display area (101) of the touch display panel and corresponds to the black matrix (11) on the color film substrate (10).

3. The touch display panel according to claim 1, characterized in that: The conductive column (60) is arranged in the non-display area (102) of the touch display panel, and the first conductive portion (61) is located on the side of the color film substrate (10).

4. The touch display panel according to claim 1, characterized in that: The number of the circuit board (50) is one, and the second touch signal line (412) and the display signal line (23) share the same circuit board (50).

5. The touch display panel according to claim 1, characterized in that: There are a plurality of circuit boards (50), and the circuit boards (50) include a touch circuit board (51) and a display circuit board (52); the second touch signal line (412) is electrically connected to the touch circuit board (51), and the display signal line (23) is electrically connected to the display circuit board (52).

6. The touch display panel according to claim 5, characterized in that: There are two touch circuit boards (51) and they are respectively arranged on both sides of the display circuit board (52); part of the second touch signal lines (412) are electrically connected to one of the adjacent touch circuit boards (51); and the other part of the second touch signal lines (412) are electrically connected to another adjacent touch circuit board (51).

7. A display device, characterized in that: It comprises a touch display panel as described in any one of claims 1 to 6.

8. A method for manufacturing a touch display panel, characterized in that: The production method comprises: A color film substrate (10) is provided, wherein the color film substrate (10) has a first surface and a second surface opposite to each other, and a through hole (104) is formed by punching a hole on the first surface of the color film substrate (10); Covering the first surface or the second surface of the color film substrate (10) with a metal layer film (1) and filling the through hole (104); Etching the metal layer film (1) and forming a first conductive portion (61) in the through hole (104); A touch layer (40) is formed on the first surface or the second surface of the color film substrate (10), and a first touch signal line (411) of the touch layer (40) is electrically connected to one end of the first conductive portion (61); Providing an array substrate (20), on which a second touch signal line (412) is arranged; Providing a liquid crystal layer (30), and performing a box process on the color film substrate (10), the array substrate (20), and the liquid crystal layer (30), wherein the side of the color film substrate (10) on which the touch layer (40) is formed is away from the array substrate (20); Before the boxing process, a second conductive portion (62) is provided on the color film substrate (10) or the array substrate (20), and after the boxing process, two ends of the second conductive portion (62) are electrically connected to the first conductive portion (61) and the second touch signal line (412) respectively; or, after the boxing process, a second conductive portion (62) is formed between the color film substrate (10) and the array substrate (20), and two ends of the second conductive portion (62) are electrically connected to the first conductive portion (61) and the second touch signal line (412) respectively; The second conductive part (62) is a conductive spacer ball arranged in the sealing glue.

9. A method for manufacturing a touch display panel, characterized in that: The production method comprises: A color film substrate (10) is provided, wherein the color film substrate (10) has a first surface and a second surface opposite to each other, and a hole is punched on the first surface of the color film substrate (10) to form a blind hole (105); Covering the first surface of the color film substrate (10) with a metal layer film (1) and filling the blind hole (105); Etching the metal layer film (1) and forming a first conductive portion (61) in the blind hole (105); Polishing the second surface of the color film substrate (10) so that the first conductive portion (61) is exposed from the second surface; A touch layer (40) is formed on the first surface or the second surface of the color film substrate (10), and a first touch signal line (411) of the touch layer (40) is electrically connected to one end of the first conductive portion (61); Providing an array substrate (20), on which a second touch signal line (412) is arranged; Providing a liquid crystal layer (30), and performing a box process on the color film substrate (10), the array substrate (20), and the liquid crystal layer (30), wherein the side of the color film substrate (10) on which the touch layer (40) is formed is away from the array substrate (20); Before the boxing process, a second conductive portion (62) is provided on the color film substrate (10) or the array substrate (20), and after the boxing process, two ends of the second conductive portion (62) are electrically connected to the first conductive portion (61) and the second touch signal line (412) respectively; or, after the boxing process, a second conductive portion (62) is formed between the color film substrate (10) and the array substrate (20), and two ends of the second conductive portion (62) are electrically connected to the first conductive portion (61) and the second touch signal line (412) respectively; The second conductive part (62) is a conductive spacer ball arranged in the sealing glue.

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