Abstract:
Provided are a touch display panel and a touch display device. The touch display panel comprises a TFT array substrate ( 200 ) and a color film substrate ( 100 ) arranged opposite to each other. The TFT array substrate ( 200 ) comprises: a plurality of touch drive wires (TD), a plurality of touch sensing wires (TS), and a plurality of touch TFTs ( 220 ), one of the source ( 2053 ) and the drain ( 2054 ) of the touch TFTs ( 220 ) is electrically connected to the touch drive wires (TD), and the other one of the source ( 2053 ) and the drain ( 2054 ) of the touch TFTs ( 220 ) is electrically connected to the touch sensing wires (TS). The color film substrate ( 100 ) comprises: a plurality of conductive pillars ( 110 ) facing the TFT array substrate ( 200 ), and the conductive pillars ( 110 ) are arranged corresponding to the touch TFTs ( 220 ) to control the channel current of the touch TFTs ( 220 ). TFT arrays in the provided touch display panel and touch display device are compatible with the existing pixel array structure and technology, without adding additional process steps, and the realization of the touch function and the realization of the display function do not interfere with each other.

Description:
[0001]    This application claims priority to Chinese patent application No. 201310030355.0, entitled “TOUCH DISPLAY PANEL AND TOUCH DISPLAY DEVICE”, filed with the State Intellectual Property Office of People&#39;s Republic of China on Jan. 25, 2013, the entire contents of which are herein incorporated by reference. 
       FIELD OF THE INVENTION 
       [0002]    The present invention relates to the field of touch display, and particularly to a touch display panel and a touch display device. 
       BACKGROUND OF THE INVENTION 
       [0003]    With the rapid development of mobile communication devices, especially with the development of smart phones in recent years, display panels with touch functions (referred to as touch display panels) have attracted more and more attention of major manufacturers. Currently, the touch display panels may be approximately divided into an external mounting type and an embedded type, according to different combination manners of touch structures and display structures. Compared with the external mounting touch display panels, the embedded touch display panels are relatively lighter and thinner and are popular with the manufacturers and consumers. At present, the touch structures in the embedded touch display panels are mainly capacitive touch structures or resistive touch structures.  FIG. 1  is a structure schematic diagram of an embedded capacitive touch liquid crystal display panel in the prior art. The embedded capacitive touch liquid crystal display panel includes a color filter substrate  1  and a TFT (Thin Film Transistor) array substrate  2 , which are disposed oppositely, and a liquid crystal layer  3  disposed between the color filter substrate  1  and the TFT array substrate  2 . The color filter substrate  1  includes an upper substrate  4 , a capacitive touch structure layer  5  and a color filter layer  6 . In the embedded capacitive touch liquid crystal display panel, the capacitive touch structure layer is integrated on the color filter substrate of the liquid crystal display panel, so as to achieve embedded touch display. No matter in the embedded capacitive touch display panel or the embedded resistive touch display panel, the capacitive touch structure or the resistive touch structure needs to be prepared on the basis of preparation of the display structure, thus the production cost is higher and the process is quite complicated. In some technologies, the capacitive touch structure layer intends to be integrated in the TFT array substrate of the liquid crystal display panel, to synchronously manufacture the capacitive touch structure and a TFT array, so as to reduce the cost and simplify the process. However, when at work, the capacitive touch structure will affect the alignment of liquid crystals, thereby being unfavorable to the display of the liquid crystals. 
         [0004]    To sum up, in the prior art, when at work, the capacitive touch structure integrated in the TFT array substrate will affect the alignment of the liquid crystals, thereby being unfavorable to the display of the liquid crystals. 
       SUMMARY OF THE INVENTION 
       [0005]    Embodiments of the present invention provide a touch display panel and a touch display device, which are used for simultaneously achieving display and touch of a display panel, when the display panel is at work. 
         [0006]    The embodiments of the present invention provide a touch display panel, including: a TFT array substrate and a color filter substrate, which are disposed oppositely, wherein the TFT array substrate includes: 
         [0000]    a plurality of touch drive lines; a plurality of touch induction lines;
 
a plurality of touch TFTs, wherein one of the source electrode and the drain electrode of each touch induction TFT is electrically connected with one of the touch drive lines, and the other of the source electrode and the drain electrode of each touch TFT is electrically connected with one of the touch induction lines;
 
the color filter substrate includes:
 
a plurality of conductive spacers facing to the TFT array substrate, wherein the conductive spacers are disposed corresponding to the touch TFTs for controlling the channel current of the touch TFTs.
 
         [0007]    The embodiments of the present invention further provide a touch display device including the above-mentioned touch display panel. 
         [0008]    Compared with the prior art, in the touch display panel and the touch display device provided in the embodiments of the present invention, the touch display panel includes the TFT array substrate and the color filter substrate, which are disposed oppositely, the TFT array substrate includes a plurality of touch TFTs, the color filter substrate includes a plurality of conductive spacers disposed to face the surface of the TFT array substrate, and the conductive spacers are disposed corresponding to the touch TFTs for controlling the channel current of the touch TFTs, thus the present invention has the following advantages and beneficial effects:
       1. the touch TFTs are used for achieving a touch function, which has a touch principle different from that of the resistive or capacitive touch technology in the prior art; and   2. the touch TFTs achieving the touch function may be compatible with the preparation process of pixel arrays in the TFT array substrate, so that no additional component is added and no additional processing step is added either.       
 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0011]      FIG. 1  is a schematic structural diagram of an embedded capacitive touch liquid crystal display panel in the prior art; 
           [0012]      FIG. 2  is a solid schematic diagram of a touch display panel provided by an embodiment of the present invention; 
           [0013]      FIG. 3  is a schematic structural diagram in a top view of a color filter substrate provided by an embodiment of the present invention; 
           [0014]      FIG. 4  is another schematic structural diagram in a top view of a color filter substrate provided by an embodiment of the present invention; 
           [0015]      FIG. 5  is a schematic structural diagram in a top view of a TFT array substrate provided by an embodiment of the present invention; 
           [0016]      FIG. 6  is an enlarged view of a dotted line region in  FIG. 5 ; 
           [0017]      FIG. 7  is a schematic structural diagram in a section view, taken along A-A′, of a touch display panel including the TFT array substrate as shown in  FIG. 6 ; 
           [0018]      FIG. 8  is another schematic structural diagram in a section view, taken along A-A′, of a touch display panel including the TFT array substrate as shown in  FIG. 6 ; 
           [0019]      FIG. 9  is a third schematic structural diagram in a section view, taken along A-A′, of a touch display panel including the TFT array substrate as shown in  FIG. 6 ; 
           [0020]      FIG. 10  is a first schematic structural diagram in a section view of a color filter substrate provided by an embodiment of the present invention; 
           [0021]      FIG. 11  is a second schematic structural diagram in a section view of a color filter substrate provided by an embodiment of the present invention; 
           [0022]      FIG. 12  is a third schematic structural diagram in a section view of a color filter substrate provided by an embodiment of the present invention; 
           [0023]      FIG. 13  is a fourth schematic structural diagram in a section view of a color filter substrate provided by an embodiment of the present invention; 
           [0024]      FIG. 14  is a schematic structural diagram in a section view of a touch display panel including a main spacer and conductive spacers provided by an embodiment of the present invention; 
           [0025]      FIG. 15  is another schematic structural diagram in a top view of a TFT array substrate provided by an embodiment of the present invention; and 
           [0026]      FIG. 16  is a third schematic structural diagram in a top view of a TFT array substrate provided by an embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0027]    The core idea of the present invention is to achieve a touch function through a touch TFT array compatible with the structure and preparation process of a pixel array on a TFT array substrate, and the achievement of the touch function and the achievement of a display function are non-interfering. Specifically, embodiments of the present invention provide a touch display panel, including: a TFT array substrate and a color filter substrate, which are disposed oppositely; 
         [0000]    the TFT array substrate includes a pixel array and a touch TFT array,
 
wherein the touch TFT array includes: a plurality of touch drive lines; a plurality of touch induction lines; a plurality of touch TFTs, the source electrode/drain electrode (one of the source electrode and the drain electrode) of each touch TFT is electrically connected with one of the touch drive lines, and the drain electrode/source electrode (correspondingly, the other of the source electrode and the drain electrode) of each touch TFT is electrically connected with one of the touch induction lines;
 
the pixel array includes: a plurality of scanning lines; a plurality of data lines insulated and intersected with the plurality of scanning lines; and a plurality of pixel units, wherein each pixel unit is disposed in a pixel region enclosed by adjacent scanning lines and adjacent data lines. In general, a pixel unit includes a switch TFT and a pixel electrode; the gate electrode of the switch TFT is electrically connected with the scanning lines; the source electrode/drain electrode (one of the source electrode and the drain electrode) of the switch TFT is electrically connected with the data lines; the drain electrode/source electrode (correspondingly, the other of the source electrode and the drain electrode) of the switch TFT is electrically connected with the pixel electrode.
 
         [0028]    The color filter substrate includes: a plurality of conductive spacers disposed on the surface of the color filter substrate facing to the TFT array substrate, wherein the conductive spacers are disposed corresponding to the touch TFTs for controlling the channel current of the touch TFTs, so as to judge whether touch occurs. 
         [0029]    In this way, when no touch occurs, the free end of each conductive spacer is away from each touch TFT far enough, and the channel current of each touch TFT is smaller than a preset threshold value and even is 0; when touch occurs, an object such as a finger or the like presses the color filter substrate, the conductive spacer at the pressing site approaches to the touch TFT with pressing, when the conductive spacer is close enough to the channel of the touch TFT (at this time, the touch TFT is not provided with a dedicated gate electrode, and the conductive spacer serves as the gate electrode actually), the touch TFT generates the channel current, and the channel current may be detected as long as being larger than the threshold value, to display the occurrence of touch at the site. When the touch occurs, the conductive spacer at the pressing site approaches to the touch TFT with pressing, the conductive spacer may also be electrically connected with the gate electrode (at this time, the touch TFT is provided with a dedicated top gate or bottom gate) of the touch TFT directly or indirectly, the electric potential of the conductive spacer is transmitted to the gate electrode of the touch TFT, to enable the touch TFT to generate the channel current, and when the channel current is larger than 0 or the threshold value, the channel current may also be detected, to display the occurrence of touch at the site. 
         [0030]    In the touch display panel provided by the embodiments of the present invention, as the touch TFT is used for achieving touch, the touch principle thereof is completely different from the principles of the existing resistive touch and capacitive touch, no interference will be generated to the display when at work, and particularly, no adverse effect will be generated on the alignment of liquid crystals in a liquid crystal display panel. In addition, the preparation processes of the pixel array and the touch TFT for touch may be compatible, moreover, a part of or all of the two components may be located on the same layer and made from the same material, thereby saving the raw materials, such that the cost is greatly reduced. 
         [0031]    As a preferred implementation way, in the touch display panel provided by other embodiments of the present invention, the touch drive lines for touch and the data lines for display may be shared, in this way, the integration degree of the touch structure and the display structure may be further improved. 
         [0032]    The touch display device including the above-mentioned touch display panel provided by the embodiments of the present invention has corresponding advantages as well. 
         [0033]    On the one hand, the touch display panel and the touch display device provided by the embodiments of the present invention have new display principles and achieve embedded touch display, so that the display panel is relatively light and thin; on the other hand, no additional structure component will be added on the basis of the display panel, no processing step is added and compatibility of the structure and the process is achieved, so that the cost is reduced; in a third aspect, when at work, the touch TFT will not affect the normal display of the display panel, thereby achieving the working compatibility of touch and display. 
       First Embodiment 
       [0034]    The solid structure of a touch display panel provided by the first embodiment of the present invention is illustrated in  FIG. 2 . It can be seen from  FIG. 2  that the touch display panel provided by the first embodiment of the present invention includes a TFT array substrate  200  and a color filter substrate  100 , which are disposed oppositely. In general, the TFT array substrate  200  and the color filter substrate  100  are disposed in parallel and are bonded together by frame sealant (not shown in the figure) coated there between and located in a peripheral region. For different types of display panels, the space between the TFT array substrate  200  and the color filter substrate  100  may be vacuum or may be filled with gas, liquid and even colloid. For example, if the touch display panel is a touch liquid crystal display panel, liquid crystal molecules are filled between the TFT array substrate  200  and the color filter substrate  100 ; if the touch display panel is touch electronic paper, electronic ink is filled between the TFT array substrate  200  and the color filter substrate  100 ; if the touch display panel is a plasma display panel, gases capable of being converted into plasma are filled between the TFT array substrate  200  and the color filter substrate  100 , and on the like. 
         [0035]    The TFT array substrate  200  in the touch display panel provided by the first embodiment of the present invention includes a pixel array and a touch TFT array, and the pixel array and the touch TFT array are disposed to be mutually independent. 
         [0036]    In this case, the touch TFT array includes: a plurality of touch drive lines; a plurality of touch induction lines; 
         [0000]    a plurality of touch TFTs, wherein the source electrode/drain electrode of each touch TFT is electrically connected with one of the touch drive lines, and the drain electrode/source electrode of each touch TFT is electrically connected with one of the touch induction lines;
 
the pixel array includes: a plurality of scanning lines; a plurality of data lines intersected with the plurality of scanning lines in an insulated manner; a plurality of pixel units, each pixel unit being disposed in a pixel region enclosed by adjacent scanning lines and adjacent data lines. In general, each pixel unit includes a switch TFT and a pixel electrode; the gate electrode of the switch TFT is electrically connected with the scanning lines; the source electrode/drain electrode of the switch TFT is electrically connected with the data lines; the drain electrode/source electrode of the switch TFT is electrically connected with the pixel electrode.
 
         [0037]    In the color filter substrate in the touch display panel provided by the first embodiment of the present invention, a plurality of conductive spacers disposed corresponding to the touch TFTs are added on the basis of the traditional color filter substrate, for controlling the current of the touch TFTs to achieve a touch function. 
         [0038]      FIG. 3  is a schematic structural diagram in a top view of a color filter substrate provided by the first embodiment of the present invention. It can be seen from  FIG. 3  that, the color filter substrate  100  includes: a plurality of conductive spacers  110  disposed on the surface of the touch display panel  100  facing to the TFT array substrate  200  and a first conductive layer  111  connected with the plurality of conductive spacers  110 . The first conductive layer  111  is of an integral structure. 
         [0039]    However, the first conductive layer  111  may be not of an integral structure, as shown in  FIG. 4 , the first conductive layer  111  includes a plurality of mutually separated first wires  1111 , and each first wire  1111  is at least electrically connected with one conductive spacer  110 . In general, the first wires  1111  are disposed in parallel and extend towards the same direction, and each first wire  1111  is connected with a line or a column of conductive spacers  110 . 
         [0040]    For the color filter substrate as shown in  FIG. 3 , the plurality of conductive spacers  110  thereon are electrically connected together by the integral conductive layer  111 , in order to achieve the touch function, the touch drive lines are insulated and intersected with the touch induction lines (generally they are vertically intersected), and a touch coordinate may be determined by using the touch drive lines and the touch induction lines intersected in an insulated manner. 
         [0041]    Specifically,  FIG. 5  is a schematic structural diagram in a top view of a TFT array substrate in  FIG. 2 .  FIG. 6  is an enlarged view of a dotted line region in  FIG. 5 . It can be seen from  FIG. 5  and  FIG. 6  that, the TFT array substrate  200  includes: 
         [0042]    a plurality of touch drive lines TD (TD 1 , TD 2 , . . . , TD n , . . . ); a plurality of touch induction lines TS (TS 1 , TS 2 , . . . , TS n , . . . ). 
         [0043]    The source electrode/drain electrode (one of the source electrode and the drain electrode) of a touch TFT  220  is electrically connected with the touch drive lines TD, and the drain electrode/source electrode (correspondingly, the other of the source electrode and the drain electrode) of the touch TFT  220  is electrically connected with the touch induction lines TS. 
         [0044]    The TFT array substrate  200  further includes: a plurality of scanning lines S (S 1 , . . . , S n , S n+1 , . . . ); a plurality of data lines D (D 1 , D n , D n+1 , . . . ) intersected and insulated with the plurality of scanning lines S (S 1 , . . . , S n , S n+1 , . . . ); a plurality of pixel units, wherein each pixel unit is disposed in a pixel region enclosed by adjacent scanning lines S and adjacent data lines D. Each pixel unit includes a switch TFT  210  and a pixel electrode  207 ; the gate electrode of the switch TFT  210  is electrically connected with the scanning lines S; the source electrode/drain electrode of the switch TFT  210  is electrically connected with the data lines D; the drain electrode/source electrode of the switch TFT  210  is electrically connected with the pixel electrode  207 . 
         [0045]    In this case, the touch drive lines TD and the scanning lines S extend along the same direction and are vertical to the data lines D; the touch induction lines TS and the data lines D extend along the same direction and are vertical to the scanning lines S. Therefore, a touch coordinate of the touch display panel including the TFT array substrate  200  as shown in  FIG. 5  and  FIG. 6  may be determined by the touch drive lines TD and the touch induction lines TS intersected in an insulated manner. 
         [0046]    In addition, the touch TFT  220  in  FIG. 5  may be distributed in a plurality of manners, for example, one touch TFT is disposed in each pixel region; or one touch TFT is disposed in the pixel region every other a preset number of pixel units, specifically, one touch TFT may be disposed in the pixel region every other M pixel units in a direction parallel to the scanning lines, and one touch TFT may be disposed in the pixel region every other N pixel units in a direction parallel to the data lines, wherein both M and N are positive integers. 
         [0047]      FIG. 7  includes a schematic structural diagram in a section view, taken along A-A′, of a touch display panel including the TFT array substrate as shown in  FIG. 6 . In combination with  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 7 , it may be seen that the TFT array substrate  200  includes a lower substrate  201  and a pixel array located on the lower substrate  201 . 
         [0048]    The switch TFT  210  in the pixel unit is a bottom gate TFT and includes a first gate electrode  2021  located on the lower substrate  201 , a first insulating layer (gate electrode insulating layer)  203  located on the first gate electrode  2021 , a first active layer  2041  (which may be made from semiconductor material such as noncrystalline silicon material and the like, and may be single-layer or multilayer) located on the first insulating layer  203 , a first source electrode  2051  and a first drain electrode  2052  located on the first active layer  2041 , and a second insulating layer (passivation layer)  206  located above the first source electrode  2051  and the first drain electrode  2052 , wherein the first source electrode  2051  and the first drain electrode  2052  are mutually separate and are electrically connected with the first active layer  2041  respectively; the first active layer  2041  between the first source electrode  2051  and the first drain electrode  2052  forms a channel; and the first gate electrode  2021  is located below the channel. The pixel electrode  207  is electrically connected with the first drain electrode  2052  through a via hole. 
         [0049]    The touch TFT  220  includes a first insulating layer (gate electrode insulating layer)  203  located on the lower substrate  201 , a second active layer  2042  (which may be made from semiconductor material, such as noncrystalline silicon material and the like, and may be single-layer or multilayer) located on the first insulating layer  203 , a second source electrode  2053  and a second drain electrode  2054  located on the second active layer  2042 , and a second insulating layer (passivation layer)  206  located above the second source electrode  2053  and the second drain electrode  2054 , wherein the second source electrode  2053  and the second drain electrode  2054  are mutually separated and are electrically connected with the second active layer  2042  respectively; and the second active layer  2042  between the second source electrode  2053  and the second drain electrode  2054  forms a channel. 
         [0050]    The pixel electrode  207  is connected with the first drain electrode  2052  through a via hole; the second source electrode  2053  is connected with the touch drive lines TD through a via hole  211 ; the second drain electrode  2054  is directly connected with the touch induction lines TS on the same layer. 
         [0051]    It should be noted that, the above-mentioned “located on . . . ” means that both sides may be in direct contact or may also be in indirect contact, for example, the expression “a first gate electrode  2021  located on the lower substrate  201 ” means that the lower substrate  201  and the first gate electrode  2021  may be in direct contact or may also be in indirect contact. The expressions “located on . . . ” involved at other places in this application document may refer to this explanation. 
         [0052]    In combination with  FIG. 5 ,  FIG. 6  and  FIG. 7 , it may be also seen that the first gate electrode  2021 , the scanning lines S and the touch drive lines TD are located on the same layer and are made from the same material; the scanning lines S and the touch drive lines TD extend towards the same direction (first direction). The first source electrode  2051 , the first drain electrode  2052 , the second source electrode  2053 , the second drain electrode  2054 , the data lines D and the touch induction lines TS are located on the same layer and are made from the same material; the data lines D and the touch induction lines TS extend towards the same direction (second direction), wherein the first direction and the second direction are intersected (generally, may be vertically intersected). The touch TFT  220  and the switch TFT  210  share the first insulating layer  203  and the second insulating layer  206 . 
         [0053]    It may be seen that, on a layered structure, the pixel array and the touch TFT array are compatible and may be synchronously manufactured. Specifically, the structure of the touch TFT  220  is corresponding to the structure of the switch TFT  210 , and the former is provided with only one more bottom gate than the latter. The structure of each part of the touch TFT has a corresponding structure in the switch TFT  210 , and the both sides are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step. In addition, the touch drive lines TD of the touch TFT array and the scanning lines S of the pixel array are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step; the touch induction lines TS of the touch TFT array and the data lines D of the pixel array are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step. 
         [0054]    It should be noted that, in the above-mentioned description of  FIG. 7 ,  2051  refers to the source electrode of the switch TFT  210  and  2052  refers to the drain electrode of the switch TFT  210 ; but it should be known by those of ordinary skill in the art that  2051  may refer to the drain electrode of the switch TFT  210  and  2052  may refer to the source electrode of the switch TFT  210 . Similarly,  2053  may refer to the drain electrode of the touch TFT  220  and  2054  may refer to the source electrode of the touch TFT  220 . 
         [0055]    In combination with  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 7 , the touch working process of the first embodiment of the present invention is illustrated as follows. 
         [0056]    In combination with  FIG. 6  and  FIG. 7 , for one touch TFT  220 , when no touch occurs, the free end  1101  of the conductive spacer  110  does not contact the TFT array substrate  200 , and the distance is far enough, the electric field of the conductive spacer  110  could not control the touch TFT  220  and drive the same to generate channel current, at this time, no touch induced current is detected (namely, the channel current is 0); when touch occurs, the conductive spacer  110  approaches to the TFT array substrate  200  with pressing and is close enough to the channel of the touch TFT  220  (generally, the conductive spacer contacts the passivation layer above the channel, namely, the conductive spacer is isolated from an active layer in the channel region through an insulating layer), so that the touch TFT  220  generates the channel current. Preferably, the electric potential of the conductive spacer  110  is disposed to be high enough in general, to ensure that when the conductive spacer  110  contacts the passivation layer above the channel of the TFT  220 , the TFT  220  generates channel current I, and the channel current I may be detected. A threshold value T is preset, which is larger than 0 and is smaller than the channel current I; when the detected channel current is smaller than the threshold value T, it is judged that no touch occurs; and when the detected channel current is larger than the threshold value T, it is judged that touch occurs. When the channel current is equal to the threshold value T, it may be judged that no touch occurs or it may also be judged that touch occurs. 
         [0057]    It should be further noted that, in the section structure of the touch display panel as shown in  FIG. 7 , the switch TFT  210  in the pixel unit is a bottom gate TFT. However, the switch TFT  210  in the pixel unit may also be a top gate TFT (not shown in the figure). 
       Second Embodiment 
       [0058]    In the first embodiment of the present invention, the touch TFT included in the TFT array substrate is provided with no gate electrode, the conductive spacer  110  serves as the gate electrode of the touch TFT substantially. In the second embodiment provided by the present invention, the touch TFT included in the TFT array substrate is provided with a top gate, in combination with  FIG. 2 ,  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 8 , the parts the same as the first embodiment are not repeated redundantly and are specifically as follows: 
         [0059]      FIG. 8  is another schematic structural diagram in a section view, taken along A-A′, of a touch display panel including the TFT array substrate as shown in  FIG. 6 . In combination with  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 8 , it may be seen that the TFT array substrate  200  includes a lower substrate  201  and a TFT array located on the lower substrate  201 . 
         [0060]    The switch TFT  210  in the pixel unit is a top gate TFT and includes a first insulating layer (gate electrode insulating layer)  203  located on the lower substrate  201 , a first active layer  2041  (which may be made from low temperature polycrystalline silicon material or oxide semiconductor material, for example, IGZO (Indium Gallium Zinc Oxide) or other semiconductor material, and may be single-layer or multilayer) located on the first insulating layer  203 , a first source electrode  2051  and a first drain electrode  2052  located on the first active layer  2041 , and a second insulating layer (passivation layer)  206  located above the first source electrode  2051  and the first drain electrode  2052 , wherein the first source electrode  2051  and the first drain electrode  2052  are mutually separated and are electrically connected with the first active layer  2041  respectively; the first active layer  2041  between the first source electrode  2051  and the first drain electrode  2052  forms a channel; a first gate electrode  209  (top gate) is located above the channel; the pixel electrode  207  is located on the second insulating layer  206  and is connected with the first drain electrode  2052  through a via hole. 
         [0061]    The touch TFT  220  includes a first insulating layer (gate electrode insulating layer)  203  located on the lower substrate  201 , a second active layer  2042  (may be made from low temperature polycrystalline silicon material or oxide semiconductor material, for example, IGZO (Indium Gallium Zinc Oxide) or other semiconductor materials, and may be single-layer or multilayer) located on the first insulating layer  203 , a second source electrode  2053  and a second drain electrode  2054  located on the second active layer  2042 , a second insulating layer (passivation layer)  206  located above the second source electrode  2053  and the second drain electrode  2054 , and a second gate electrode  208  (top gate) located above the second insulating layer  206 , wherein the second source electrode  2053  and the second drain electrode  2054  are mutually separated and are electrically connected with the second active layer  2042  respectively; the second active layer  2042  between the second source electrode  2053  and the second drain electrode  2054  forms a channel; the second gate electrode  208  is located above the channel and is insulated with the second active layer  2042 , the second source electrode  2053  and the second drain electrode  2054 . 
         [0062]    The pixel electrode  207  is electrically connected with the first drain electrode  2052  through a via hole; the second source electrode  2053  is connected with the touch drive lines TD through a via hole  211 ; the second drain electrode  2054  is directly connected with the touch induction lines TS on the same layer. 
         [0063]    In combination with  FIG. 5 ,  FIG. 6  and  FIG. 8 , it may be also seen that the scanning lines S and the touch drive lines TD are located on the same layer and are made from the same material; the scanning lines S and the touch drive lines TD extend towards the same direction (first direction). The first source electrode  2051 , the first drain electrode  2052 , the second source electrode  2053 , the second drain electrode  2054 , the data lines D and the touch induction lines TS are located on the same layer and are made from the same material; the data lines D and the touch induction lines TS extend towards the same direction (second direction), wherein the first direction and the second direction are intersected (generally, may be vertically intersected). The first gate electrode  209  and the second gate electrode  208  are located on the same layer and are made from the same material. The touch TFT  220  and the switch TFT  210  share the first insulating layer  203  and the second insulating layer  206 . 
         [0064]    It may be seen that, on a layered structure, the pixel array and the touch TFT array are compatible and may be synchronously manufactured. Specifically, the structure of the touch TFT  220  is the same as that of the switch TFT  210 . The structure of each part of the touch TFT has a corresponding structure in the switch TFT  210 , and the both sides are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step. In addition, the touch drive lines TD of the touch TFT array and the scanning lines S of the pixel array are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step; the touch induction lines TS of the touch TFT array and the data lines D of the pixel array are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step. 
         [0065]    In combination with  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 8 , the touch working process of the second embodiment of the present invention is illustrated as follows: 
         [0000]    in combination with  FIG. 6  and  FIG. 8 , for one touch TFT  220 , when no touch occurs, the free end  1101  of the conductive spacer  110  does not contact the second gate electrode  208 , the electric field of the conductive spacer  110  could not control the touch TFT  220  and drive the same to generate channel current, at this time, no touch induced current is detected (namely, the channel current is 0); when touch occurs, the conductive spacer  110  approaches to the TFT array substrate  200  with pressing and contacts the second gate electrode  208  of the touch TFT  220 , to enable the touch TFT  220  to generate the channel current. Preferably, the electric potential of the conductive spacer  110  is disposed to be high enough in general, to ensure that when the conductive spacer  110  contacts the second gate electrode  208  of the touch TFT  220 , the TFT  220  generates channel current I, and the channel current I may be detected. A threshold value T is preset, which is larger than 0 and is smaller than the channel current I; when the detected channel current is smaller than the threshold value T, it is judged that no touch occurs; when the detected channel current is larger than the threshold value T, it is judged that touch occurs. When the channel current is equal to the threshold value T, it may be judged that no touch occurs or it may also be judged that touch occurs. 
         [0066]    It should be further noted that, in the schematic structural diagram in a section view of the touch display panel as shown in  FIG. 8 , the switch TFT  210  in the pixel unit is a top gate TFT. However, the switch TFT  210  in the pixel unit may also be a bottom gate TFT (not shown in the figure). In addition, the conductive spacer  110  is unnecessary to be located right above the second gate electrode  208  of the touch TFT  220 , as long the conductive spacer  110  may be electrically connected with the second gate electrode  208  of the touch TFT  220  when touch occurs. For example, the second gate electrode  208  is extended to form an extension part (not shown in the figure), and the conductive spacer  110  is located right above the extension part. 
       Third Embodiment 
       [0067]    In the first embodiment of the present invention, the touch TFT included in the TFT array substrate is provided with no gate electrode, the conductive spacer  110  serves as the gate electrode of the touch TFT substantially; in the second embodiment of the present invention, the touch TFT included in the TFT array substrate is provided with a top gate; in the third embodiment of the present invention, the touch TFT included in the TFT array substrate is provided with a bottom gate; in combination with  FIG. 2 ,  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 9 , the parts the same as the first embodiment and the second embodiment are not repeated redundantly and are specifically as follows. 
         [0068]      FIG. 9  is a third schematic structural diagram in a section view, taken along A-A′, of a touch display panel including the TFT array substrate as shown in  FIG. 6  along A-A′. In combination with  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 9 , it may be seen that the TFT array substrate  200  includes a lower substrate  201  and a TFT array located on the lower substrate  201 . 
         [0069]    The switch TFT  210  in the pixel unit is a bottom gate TFT and includes a first gate electrode  2021  located on the lower substrate  201 , a first insulating layer (gate electrode insulating layer)  203  located on the first gate electrode  2021 , a first active layer  2041  (which may be made from semiconductor material, such as noncrystalline silicon material and the like, and may be single-layer or multilayer) located on the first insulating layer  203 , a first source electrode  2051  and a first drain electrode  2052  located on the first active layer  2041 , and a second insulating layer (passivation layer)  206  located above the first source electrode  2051  and the first drain electrode  2052 , wherein the first source electrode  2051  and the first drain electrode  2052  are mutually separated and are electrically connected with the first active layer  2041  respectively; the first active layer  2041  between the first source electrode  2051  and the first drain electrode  2052  forms a channel; and the first gate electrode  2021  is located below the channel. The pixel electrode  207  is electrically connected with the first drain electrode  2052  through a via hole. 
         [0070]    The touch TFT  220  includes a second gate electrode  2022  (bottom gate) located on the lower substrate  201 , a first insulating layer (gate electrode insulating layer)  203  located on the second gate electrode  2022 , a second active layer  2042  (which may be made from semiconductor material, such as a noncrystalline silicon material and the like, and may be single-layer or multilayer) located on the first insulating layer  203 , a second source electrode  2053  and a second drain electrode  2054  located on the second active layer  2042 , and a second insulating layer (passivation layer)  206  located above the second source electrode  2053  and the second drain electrode  2054 , wherein the second source electrode  2053  and the second drain electrode  2054  are mutually separated and are electrically connected with the second active layer  2042  respectively; the second active layer  2042  between the second source electrode  2053  and the second drain electrode  2054  forms a channel; the second gate electrode  2022  is located below the channel and is insulated with the second active layer  2042 , the second source electrode  2053  and the second drain electrode  2054 . 
         [0071]    The pixel electrode  207  is electrically connected with the first drain electrode  2052  through a via hole; the second source electrode  2053  is connected with the touch drive lines TD through a via hole  211 ; the second drain electrode  2054  is directly connected with the touch induction lines TS on the same layer. In addition, the TFT array substrate  200  further includes a touch electrode  214  located on the surface layer thereof and an extension part of the second gate electrode  2022 ; the touch electrode  214  is connected with the extension part of the second gate electrode  2022  through a via hole  213  penetrating through the first insulating layer  203  and the second insulating layer  206 . 
         [0072]    In combination with  FIG. 5 ,  FIG. 6  and  FIG. 9 , it may be also seen that the first gate electrode  2021 , the second gate electrode  2022 , the scanning lines S and the touch drive lines TD are located on the same layer and are made from the same material; and the scanning lines S and the touch drive lines TD extend towards the same direction (first direction). The first source electrode  2051 , the first drain electrode  2052 , the second source electrode  2053 , the second drain electrode  2054 , the data lines D and the touch induction lines TS are located on the same layer and are made from the same material; the data lines D and the touch induction lines TS extend towards the same direction (second direction), wherein the first direction and the second direction are intersected (generally, may be vertically intersected). The first gate electrode  2021  and the second gate electrode  2022  are located on the same layer and are made from the same material. The touch TFT  220  and the switch TFT  210  share the first insulating layer  203  and the second insulating layer  206 . 
         [0073]    It thus may be seen that, on a layered structure, the pixel array and the touch TFT array are compatible and may be synchronously manufactured. Specifically, the structure of the touch TFT  220  is the same as the structure of the switch TFT  210 . The structure of each part of the touch TFT has a corresponding structure in the switch TFT  210 , and the both sides are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step. In addition, the touch drive lines TD of the touch TFT array and the scanning lines S of the pixel array are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step; the touch induction lines TS of the touch TFT array and the data lines D of the pixel array are located on the same layer, are made from the same material and may be synchronously prepared in the same processing step. The touch electrode  214  and the pixel electrode  207  may be located on the same layer, may be made from the same material and may be synchronously prepared in the same processing step. 
         [0074]    In combination with  FIG. 3 ,  FIG. 5 ,  FIG. 6  and  FIG. 9 , the touch working process of the third embodiment of the present invention is illustrated as follows: 
         [0000]    in combination with  FIG. 6  and  FIG. 9 , for one touch TFT  220 , when no touch occurs, the free end  1101  of the conductive spacer  110  does not contact the touch electrode  214 , the electric field of the conductive spacer  110  could not control the touch TFT  220  and drive the same to generate channel current, at this time, no touch induced current is detected (namely, the channel current is 0); when touch occurs, the conductive spacer  110  approaches to the TFT array substrate  200  with pressing and contacts the touch electrode  214  of the touch TFT  220 , to enable the touch TFT  220  to generate the channel current. Preferably, the electric potential of the conductive spacer  110  is disposed to be high enough in general, to ensure that when the conductive spacer  110  contacts the touch electrode  214  of the touch TFT  220 , the TFT  220  generates channel current I, and the channel current I may be detected. A threshold value T is preset, the threshold value T is larger than 0 and is smaller than the channel current I; when the detected channel current is smaller than the threshold value T, it is judged that no touch occurs; when the detected channel current is larger than the threshold value T, it is judged that touch occurs. When the channel current is equal to the threshold value T, it may be judged that no touch occurs or it may also be judged that touch occurs. 
         [0075]    It should be further noted that, in the schematic structural diagram in a section view of the touch display panel as shown in  FIG. 9 , the switch TFT  210  in the pixel unit is a bottom gate TFT. However, the switch TFT  210  in the pixel unit may also be a top gate TFT (not shown in the figure). 
       Fourth Embodiment 
       [0076]    In the above-mentioned first embodiment, second embodiment and third embodiment, the conductive layer  111  on the color filter substrate is of an integral structure, thus the touch drive lines TD and the touch induction lines TS need to be intersected and insulated to determine the touch coordinate (namely, the coordinate at the touch site). While in the fourth embodiment of the present invention, the color filter substrate as shown in  FIG. 4  is adopted, the conductive layer  111  connected with a plurality of conductive spacers  110  thereon includes a plurality of mutually separated first wires  1111 , and each first wire  1111  is at least electrically connected with one conductive spacer  110 . In general, the first wires  1111  are disposed in parallel, and each first wire  1111  is connected with a line or a column of conductive spacers  110 . Then, as long as at least two of the touch drive lines TD, the touch induction lines TS and the first wires  1111  are intersected and insulated, the touch coordinate may be determined by use of the two insulated intersected ones. In general, there are two manners, in the first manner, the first wires  1111  are not adopted to determine the touch coordinate, namely, the first wires  1111  extend towards any direction, and the touch drive lines TD and the touch induction lines TS are intersected and insulated to determine the touch coordinate. This is different from the manner for determining the touch coordinate after the color filter substrate as shown in  FIG. 3  is adopted. 
         [0077]    In the second manner, the first wires  1111  are adopted to determine the touch coordinate, namely, the first wires  1111  are intersected in an insulated manner (mutually vertical in general) with any one of the touch drive lines TD and the touch induction lines TS, while the rest randomly extends (in general, may extend along the same direction as the first wires  1111 ). 
         [0078]    Therefore, the touch coordinate of the touch display panel adopting the color filter substrate as shown in  FIG. 4  may be determined by use of two insulated intersected ones among the touch drive lines TD, the touch induction lines TS and the first wires  1111 . The TFT array substrate of the touch display panel adopting the color filter substrate as shown in  FIG. 4  may have the same structure as the TFT array substrate (as shown in  FIG. 5  to  FIG. 9 ) of the touch display panel adopting the color filter substrate as shown in  FIG. 3 , and will not be repeated redundantly herein. 
         [0079]    To sum up, in the touch display panel provided by the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present invention, the pixel array and the touch TFT array are mutually disposed independently and are structurally compatible. The switch TFT  210  in the pixel unit may be a bottom gate TFT or may also be a top gate TFT; the active layers in the switch TFT  210  and the touch TFT  220  may be made from a variety kinds of semiconductor material, for example, noncrystalline silicon, polycrystalline silicon, oxide semiconductor or the like; the layered structure may have a variety of different designs; the conductive spacer and the touch TFT  220  may be disposed in an alignment manner or may also be disposed in a non-alignment manner; any two insulated intersected ones among the touch drive lines TD, the touch induction lines TS and the first wires  111  may be adopted to determine the touch coordinate.  FIG. 7  (or  FIG. 9 ) and  FIG. 8  merely show two typical TFT structures. However, from the core idea of the present invention, the structures of the switch TFT and the touch TFT in the present invention are not limited to those as shown in  FIG. 7  (or  FIG. 9 ) and  FIG. 8 . Meanwhile, if the structures of the switch TFT and the touch TFT adopt other designs, the position relationships of the scanning lines and the data lines of the pixel array with the touch drive lines and the touch induction lines of the touch TFT array may be properly adjusted according to the common knowledge in the art. 
         [0080]    In addition, in the touch display panel provided by the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present invention, the color filter substrate may have a variety of different structures. 
         [0081]      FIG. 10  is a first schematic structural diagram in a section view of a color filter substrate provided by an embodiment of the present invention. It can be seen from  FIG. 10  that the color filter substrate  100  includes an upper substrate  101 , and a black matrix layer  112 , a color filter layer  113 , a conductive spacer  110  and a first conductive layer  111 , which are located on the upper substrate  101  in sequence. The conductive spacer  110  includes an insulating column  1102  and a second conductive layer  1103  located on the surface of the insulating column  1102 ; the first conductive layer  111  is connected with the second conductive layer  1103 . As a preferred implementation way, the first conductive layer  111  and the second conductive layer  1103  may be located on the same layer, made from the same material (such as ITO, IZO and other transparent conductive material) and formed in the same processing step. 
         [0082]    In  FIG. 10 , the first conductive layer  111  and the second conductive layer  1103  are transparent, thus an additional black matrix layer  112  is needed to prevent light leakage. But in the touch display panel provided by the first embodiment of the present invention, the color filter substrate may also adopt the structure as shown in  FIG. 11 . In  FIG. 11 , the first conductive layer  111  and/or the second conductive layer  1103  is a mesh-shaped metal layer and is shielded by the black matrix layer  112 . As a further preferred manner, the black matrix layer  112  may be omitted, and the mesh-shaped metal layer is directly used as a black matrix. 
         [0083]    In  FIG. 10 , the conductive spacer  110  includes the insulating column  1102  and the second conductive layer  1103  located on the surface of the insulating column  1102 , but the conductive spacer may also adopt the structure as shown in  FIG. 12 . It can be seen from  FIG. 12  that the color filter substrate  100  includes the upper substrate  101 , and the black matrix layer  112 , the color filter layer  113 , the first conductive layer  111  and the conductive spacer  110 , which are located on the upper substrate  101  in sequence. The conductive spacer  110  is made from conductive organic material. The first conductive layer  111  may be made from transparent conductive material such as ITO, IZO and the like and may also adopt the mesh-shaped metal layer shielded by the black matrix. As a further preferred manner, the black matrix layer  112  may be omitted, and the mesh-shaped metal layer is directly used as the black matrix, namely, the first conductive layer  111  is a conductive black matrix, at this time, the black matrix is located between the color filter layer and the conductive spacer. 
         [0084]    In addition, as shown in  FIG. 13 , the color filter substrate  100  includes the upper substrate  101  and the color filter layer  113 , and the black matrix layer  112  is located between the upper substrate  101  and the color filter layer  113 . The color filter layer is a color carrier array composed of a plurality of color carrier units (R, G, B and the like), and the black matrix layer  112  covers the region between the adjacent color carrier units. The conductive spacer  110  is made from the conductive organic material and is directly disposed on the conductive black matrix layer  112 . 
         [0085]    To sum up, in the touch display panel provided by the embodiment of the present invention, the color filter substrate includes the conductive spacer and the first conductive layer electrically connected with the conductive spacer; the specific structures and position relationships of the conductive spacer, the first conductive layer and other structures (e.g., the upper substrate, the black matrix, the color filter layer or the like) of the color filter substrate may have a variety of designs and are not limited to those as shown in  FIG. 10  to  FIG. 13 . In addition, the top view corresponding to the section structure as shown in  FIG. 10  to  FIG. 13  may be  FIG. 3  or may also be  FIG. 4 . 
         [0086]    It is mentioned in the foregoing descriptions of  FIG. 2  that, in the touch display panel provided by the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present invention, the color filter substrate  100  and the TFT array substrate  200  are disposed oppositely and are bonded together by frame sealant (not shown in the figure) located on the periphery of the touch display panel. In order to maintain the stable distance between the color filter substrate  100  and the TFT array substrate  200 , a main spacer for maintaining the stable distance there between needs to be disposed between the color filter substrate  100  and the TFT array substrate  200 . As shown in  FIG. 14 , the touch display panel provided by the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present invention further includes a main spacer  114  besides the conductive spacer  110 . When no touch occurs, the two ends of the main spacer  114  respectively contact the TFT array substrate  200  and the color filter substrate  100 , and the free end  1101  of the conductive spacer  110  does not contact the TFT array substrate  200 . In this way, even if being pressed by an external force, the main spacer  114  may also maintain the stable distance between the color filter substrate  100  and the TFT array substrate  200 . In addition, the main spacer  114  may be made from the same material as the conductive spacer  110  and may be prepared in the same processing step. Therefore, the length H 1  of the main spacer  114  itself may be equal to the length H 2  of the conductive spacer  110 . But during design, the thickness H 3  of the TFT array substrate  200  at the site aligned to the main spacer  114  is larger than the thickness H 4  of the TFT array substrate  200  at the site aligned to the conductive spacer  110 ; and/or the thickness H 5  of the color filter substrate  100  at the site aligned to the main spacer  114  is larger than the thickness H 6  of the color filter substrate  100  at the site aligned to the conductive spacer  110 . 
         [0087]    As a preferred implementation way, the main spacer  114  may be divided into a first main spacer  1141  and a second main spacer  1142 . Taking the color filter substrate shown in  FIG. 13  as an example (of course, the color filter substrate as shown in  FIG. 10  to  FIG. 12  may also be taken as an example), the first main spacer  1141  is made from a conductive material, the upper end thereof is connected with the first conductive layer  111  (in the figure, it is taken as example that the first conductive layer  111  is also used as the black matrix  112 ) on the color filter substrate  100 , and the lower end thereof is connected with a signal input end  216  on the TFT array substrate  200 ; in this way, the first main spacer  1141  transmits an external drive signal or a fixed voltage from the TFT array substrate  200  to the first conductive layer  111  on the color filter substrate  100 , so as to provide a signal for touch. The second main spacer  1142  is in insulated contact with the color filter substrate  100  and/or the TFT array substrate  200  and merely functions as supporting. In addition, for the touch liquid crystal display panel, the color filter substrate  100  and the TFT array substrate  200  are further provided with a liquid crystal layer  300 , the first main spacer  1141  may be located in the frame sealant, may also be located on the side of the frame sealant close to the liquid crystal layer  300  or may also be located on the side of the frame sealant away from the liquid crystal layer  300  (not shown in the figure). 
         [0088]    In addition, the touch display panel provided by the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present invention further includes a scanning drive circuit electrically connected with the scanning lines, a data drive circuit electrically connected with the data lines, a touch drive signal generating circuit electrically connected with the touch drive lines and a touch detecting circuit electrically connected with the touch induction lines. 
       Fifth Embodiment 
       [0089]    The solid structure of the touch display panel provided by the fifth embodiment of the present invention may still refer to  FIG. 2 , for the sake of conciseness, similarities with the first embodiment, the second embodiment, the third embodiment and the fourth embodiment will not be repeatedly illustrated. The TFT array substrate  200  in the touch display panel provided by the fifth embodiment of the present invention includes a pixel array and a touch TFT array, the pixel array and the touch TFT array are not disposed independently, while the data lines of the pixel array and the touch drive lines of the touch TFT array share the same line. 
         [0090]    As shown in  FIG. 15 , the structure of the touch TFT array provided by the fifth embodiment of the present invention is the same as that of the touch TFT array as shown in  FIG. 5 ; the difference lies in that, the data lines of the pixel array in the fifth embodiment as shown in  FIG. 15  share the touch drive lines of the touch TFT array, at this time, the touch drive signal of the touch TFT is an image data signal of the pixel array. Specifically, the touch TFT array in the TFT array substrate  200  includes: 
         [0091]    a plurality of touch drive lines (i.e., data lines D); a plurality of touch induction lines TS; a plurality of touch TFTs, wherein the source electrode/drain electrode of each touch TFT is electrically connected with one of the touch drive lines, and the drain electrode/source electrode of each touch TFT is electrically connected with one of the touch induction lines; 
         [0092]    in addition, the pixel array further includes: 
         [0093]    a plurality of scanning lines intersected with the plurality of touch drive lines (i.e., data lines) in an insulated manner; a plurality of pixel units, each pixel unit being disposed in a pixel region enclosed by adjacent scanning lines and adjacent data lines. In general, each pixel unit includes a switch TFT and a pixel electrode; the gate electrode of the switch TFT is electrically connected with the scanning lines; the source electrode/drain electrode of the switch TFT is electrically connected with the data lines; the drain electrode/source electrode of the switch TFT is electrically connected with the pixel electrode. 
         [0094]    In addition, as the same as the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, the color filter substrate provided by the fifth embodiment is additionally provided with a plurality of conductive spacers disposed corresponding to the touch TFTs on the basis of the traditional color filter substrate, for controlling the current of the touch TFTs, so as to achieve a touch function. The color filter substrate provided by the fifth embodiment may adopt the structure as shown in  FIG. 3  or may also adopt the structure as shown in  FIG. 4 ; specific contents may refer to corresponding descriptions in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment. 
         [0095]    Similar to the first embodiment, the second embodiment and the third embodiment, if the touch display panel provided by the second embodiment adopts the color filter substrate as shown in  FIG. 3 , since a plurality of conductive spacers  110  are electrically connected together by an integral conductive layer  111 , then in order to achieve the touch function, the touch drive lines (i.e., data lines) and the touch induction lines need to be intersected in an insulated manner (as shown in  FIG. 15 ), and thus a touch coordinate may be determined. 
         [0096]    Similar to the fourth embodiment, if the touch display panel provided by the fifth embodiment adopts the color filter substrate as shown in  FIG. 4 , since the first conductive layer  111  includes a plurality of mutually separated first wires  1111 , in order to achieve the touch function, as long as at least two of the touch drive lines (i.e., data lines), the touch induction lines and the first wires are intersected in an insulated manner, the touch coordinate may be determined by the two insulated intersected ones. Preferably, the touch coordinate may be determined by the first wires and the touch drive lines intersected in an insulated manner (i.e., data lines). At this time, the touch induction lines and the scanning lines may be located on the same layer, extend towards the same direction and be made from the same material (as shown in  FIG. 15 ); the touch induction lines may also be located on the same layer as the data lines, extend towards the same direction and be made from the same material (as shown in  FIG. 16 ). 
         [0097]    It should be noted that, the switch TFT of the pixel unit in the touch display panel provided by the fifth embodiment of the present invention may adopt the bottom gate TFT as shown in  FIG. 7  and  FIG. 9 , or may also adopt the top gate TFT as shown in  FIG. 8 . The corresponding arrangement between the conductive spacer and the touch TFT, may adopt either the manner as shown in  FIG. 8  that the conductive spacer is aligned with the top gate of the touch TFT or the manner as shown in  FIG. 9  that the conductive spacer is aligned with the touch electrode electrically connected with the touch TFT bottom gate. The color filter substrate may also adopt the structure as shown in  FIG. 10  to  FIG. 13 . In the fifth embodiment, the main spacer as shown in  FIG. 14  may also be adopted. Compared with the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, except the condition that the data lines and the touch drive lines share the same line, the rest structures in the fifth embodiment of the present invention may adopt identical structures in the first embodiment, these identical structures may refer to corresponding descriptions in the first embodiment and in the accompanying drawings thereof, and will not be repeated redundantly herein. 
         [0098]    In addition, the touch display panel provided by the fifth embodiment of the present invention further includes a scanning drive circuit electrically connected with the scanning lines; a data drive circuit electrically connected with the data lines (serving as a touch drive signal generating circuit as well) and a touch detecting circuit electrically connected with the touch induction lines. 
         [0099]    Apparently, those skilled in the art may make various modifications and variations to the embodiments of the present invention, without departing from the essence and scope of the present invention. In this way, if these modifications and variations of the embodiments of the present invention fall into the scope of the claims of the present invention and the equivalent technology thereof, the present invention is intended to encompass these modifications and variations.