CN203084684U - Touching displaying circuit structure, array substrate and displaying device - Google Patents
Touching displaying circuit structure, array substrate and displaying device Download PDFInfo
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- CN203084684U CN203084684U CN 201220705149 CN201220705149U CN203084684U CN 203084684 U CN203084684 U CN 203084684U CN 201220705149 CN201220705149 CN 201220705149 CN 201220705149 U CN201220705149 U CN 201220705149U CN 203084684 U CN203084684 U CN 203084684U
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Abstract
The utility model discloses a touching displaying circuit structure, an array substrate and a displaying device, and relates to the technical field of displayer manufacture. The technological processes of production of touching displaying products can be reduced, and meanwhile an aperture opening ratio and an added value of the products are increased. The touching displaying circuit structure comprises a touching unit, a displaying unit, a data line, a first scanning line, a second scanning line, a signal collecting line, a first signal controlling line and a second signal controlling line, wherein the data line, the first scanning line, the second scanning line, the signal collecting line and the first signal controlling line are connected with the touching unit, and the data line, the first scanning line, the second scanning line and the second signal controlling line are connected with the displaying unit. The touching displaying circuit structure is applied to displayer manufacture.
Description
Technical field
The utility model relates to the display technique field, relates in particular to a kind of touch-control display circuit structure, array base palte and display device.
Background technology
Organic light emitting display (Active Matrix/Organic Light Emitting Diode, AMOLED) be one of the focus of current flat-panel monitor research field, compare with LCD, OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) has low energy consumption, production cost is low, autoluminescence, advantages such as wide visual angle and response speed are fast, at present, at mobile phone, PDA (Personal Digital Assistant, palm PC), demonstration field OLED such as digital camera have begun to replace traditional LCD (Liquid Crystal Display, LCD) display screen.At present In cell touch (the inner touch-control of pixel cell) technology successful Application on LCD display, the successful volume production in a line production commercial city in the industry, but because the restriction on patented technology and the yield, still can not on market, thoroughly replace Add on (capacitor thin film that is used for touch-control at the additional one deck of the bright dipping side of display device) and OGS (One Glass Solution on a large scale, integrated touch-control) product, and the product that AMOLED is combined with In cell touch is also very immature, in the making technology of this series products, exist the product making technology loaded down with trivial details, and the lower problem of manufactured goods aperture opening ratio.
The utility model content
Embodiment of the present utility model provides a kind of touch-control display circuit structure, array base palte and display device, can reduce to touch the making technology that shows in the process of producing product, saves cost, can improve the product aperture opening ratio simultaneously and increase added value.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
On the one hand, provide a kind of touch-control display circuit structure, comprise touch control unit and display unit; The data line that is connected with described touch control unit, first sweep trace, second sweep trace, signals collecting line and first signal control line; The described data line that is connected with described display unit, described first sweep trace, described second sweep trace and secondary signal control line;
Wherein said touch control unit comprises: first switching transistor, second switch transistor, first electric capacity, first touch-control electrode and the amplifier transistor;
The source electrode of described first switching transistor connects described data line, and the grid of described first switching transistor connects described first signal control line;
Described touch-control electrode connects the drain electrode of described first switching transistor;
The grid of described amplifier transistor connects described touch-control electrode, and the source electrode of described amplifier transistor connects described second sweep trace;
The transistorized grid of described second switch connects described first sweep trace or second sweep trace, and the transistorized source electrode of described second switch connects the drain electrode of described amplifier transistor, and described second switch transistor drain connects described signals collecting line;
First utmost point of described first electric capacity connects described second sweep trace, and second utmost point of described first electric capacity connects described touch-control electrode;
Described display unit comprises: light emitting module, second electric capacity, driving transistors, the 3rd switching transistor, the 4th switching transistor, the 5th switching transistor, the 6th switching transistor;
The grid of described the 3rd switching transistor connects described secondary signal control line, and the source electrode of described the 3rd switching transistor connects the first level end, and the drain electrode of described the 3rd switching transistor connects first utmost point of described second electric capacity;
The grid of described the 4th switching transistor connects described first sweep trace or second sweep trace, and the source electrode of described the 4th switching transistor connects low level, and the drain electrode of described the 4th switching transistor connects second utmost point of described second electric capacity;
The grid of described the 5th switching transistor connects described first sweep trace or second sweep trace, and the source electrode of described the 5th switching transistor connects second utmost point of described second electric capacity;
The grid of described the 6th switching transistor connects described first sweep trace or second sweep trace, and the source electrode of described the 6th switching transistor connects described data line, and the drain electrode of described the 6th switching transistor connects the drain electrode of described the 3rd switching transistor;
The grid of described driving transistors connects the drain electrode of described the 6th switching transistor, and the source electrode of described driving transistors connects first utmost point of described second electric capacity;
Described light emitting module connects described first sweep trace or second sweep trace, the drain electrode of described driving transistors and the second level end, drain electrode and the described second level end of controlling described driving transistors by described first sweep trace or second sweep trace drive described light emitting module.
Optionally, described light emitting module also connects described low level, and described light emitting module comprises: minion is closed transistor and luminescent device;
Described minion is closed transistorized grid and is connected described first sweep trace or second sweep trace, and described minion is closed the drain electrode that transistorized source electrode connects described driving transistors, and described minion is closed transistor drain and connected described low level;
One utmost point of described luminescent device connects the drain electrode of described driving transistors, and another utmost point of described luminescent device connects the second level end.
Optionally, described light emitting module comprises: minion is closed transistor and luminescent device;
Described minion is closed transistorized grid and is connected described first sweep trace or second sweep trace, and described minion is closed the drain electrode that transistorized source electrode connects described driving transistors;
One utmost point of described luminescent device connects described minion and closes transistor drain, and another utmost point of described luminescent device connects the second level end.
Optionally, second switch transistor, the 4th switching transistor, the 6th switching transistor are same type of transistor, all connect same sweep trace.
Optionally, when the 4th switching transistor, the 6th switching transistor and the 5th switching transistor were same type of transistor, the 4th switching transistor, the 6th switching transistor all connected first sweep trace, and the grid of the 5th switching transistor connects second sweep trace.
Optionally, described driving transistors and described amplifier transistor are " P " transistor npn npn.
Optionally, described driving transistors, described amplifier transistor and switching transistor are " P " transistor npn npn.
Optionally, described first switching transistor and described the 3rd switching transistor are " P " transistor npn npn or " N " transistor npn npn.
On the one hand, provide a kind of array base palte, it is characterized in that, comprising:
Above-mentioned arbitrary touch-control display circuit structure.
On the one hand, provide a kind of display device, comprising:
Above-mentioned array base palte.
Touch-control display circuit structure, array base palte and display device that embodiment of the present utility model provides, the circuit of touch-control structure and the circuit of display unit are integrated, can form the touch-control structure that the utility model embodiment provides simultaneously by the processing flow of display unit, and then minimizing touches the making technology that shows in the process of producing product, save cost, can improve the product aperture opening ratio simultaneously and increase added value.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The circuit diagram of a kind of touch-control display circuit structure that Fig. 1 provides for embodiment of the present utility model;
The circuit diagram of a kind of touch-control display circuit structure that Fig. 2 provides for another embodiment of the present utility model;
The signal sequence view of the touch-control display circuit structure as shown in Figure 2 that Fig. 3 provides for embodiment of the present utility model;
Fig. 4 changes synoptic diagram for a kind of touch-control display circuit structure touch-control electrode voltage that embodiment of the present utility model provides;
The display unit that Fig. 5 provides for embodiment of the present utility model is at the schematic equivalent circuit of second time period;
The display unit that Fig. 6 provides for embodiment of the present utility model is at the schematic equivalent circuit of the 3rd time period;
The display unit that Fig. 7 provides for embodiment of the present utility model is at the schematic equivalent circuit of the 4th time period;
The circuit diagram of a kind of touch-control display circuit structure that Fig. 8 provides for another embodiment of the present utility model;
The signal sequence view of the touch-control display circuit structure as shown in Figure 8 that Fig. 9 provides for embodiment of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Switching transistor, amplifier transistor and the driving transistors that adopts among all embodiment of the utility model all can be thin film transistor (TFT) or field effect transistor or the identical device of other characteristics, because the source electrode of the switching transistor that adopts here, drain electrode are symmetrical, so its source electrode, drain electrode can exchange.In the utility model embodiment, for distinguishing transistor the two poles of the earth except that grid, wherein a utmost point is called source electrode, and another utmost point is called drain electrode.Stipulate that by the form in the accompanying drawing transistorized intermediate ends is that grid, signal input part are that source electrode, signal output part are drain electrode.The switching transistor that adopted of the utility model embodiment comprises two kinds of P type switching transistor and N type switching transistors in addition, wherein, the conducting when grid is low level of P type switching transistor, end during at grid for high level, N type switching transistor is conducting when grid is high level, ends during for low level at grid; Amplifier transistor and driving transistors comprise P type and N type, wherein P type amplifier transistor or driving transistors are low level (grid voltage is less than source voltage) at grid voltage, and the absolute value of the pressure reduction of gate-source is in magnifying state during greater than threshold voltage, the input voltage of source electrode can be amplified the back in drain electrode output; Wherein the grid voltage of N type amplifier transistor or driving transistors is high level (grid voltage is greater than source voltage), and the absolute value of the pressure reduction of gate-source is in magnifying state during greater than threshold voltage, the input voltage of source electrode can be amplified the back in drain electrode output, certain embodiment of the present utility model has just adopted the amplifier transistor and the driving transistors of P type.
Shown in Fig. 1,2, a kind of touch-control display circuit structure comprises touch control unit 1 and display unit 2;
The data line Dn that is connected with touch control unit 1, the first sweep trace S1, the second sweep trace S2, signals collecting line L1 and the first signal control line K1;
The data line Dn that is connected with display unit 2, the first sweep trace S1, the second sweep trace S2 and secondary signal control line K2;
Wherein touch control unit 1 comprises the first switching transistor T1, second switch transistor T 2, first capacitor C 1, the first touch-control electrode N1 and amplifier transistor M1;
The source electrode of the first switching transistor T1 connects data line Dn, and the grid of the first switching transistor T1 connects the first signal control line K1;
Touch-control electrode N1 connects the drain electrode of the first switching transistor T1;
The grid of amplifier transistor M1 connects touch-control electrode N1, and the source electrode of amplifier transistor M1 connects the second sweep trace S2;
The grid of second switch transistor T 2 connects the first sweep trace S1 (as shown in Figure 1, 2) or the second sweep trace S2 (not shown), the source electrode of second switch transistor T 2 connects the drain electrode of amplifier transistor M1, and the drain electrode of second switch transistor T 2 connects signals collecting line L1;
First utmost point of first capacitor C 1 connects the second sweep trace S2, and second utmost point of first capacitor C 1 connects touch-control electrode N1;
The grid of the 3rd switching transistor T3 connects secondary signal control line K2, and the source electrode of the 3rd switching transistor T3 connects the first level end V1, and the drain electrode of the 3rd switching transistor T3 connects first utmost point of second capacitor C 2;
The grid of the 4th switching transistor T4 connects the first sweep trace S1 (as shown in Figure 1, 2) or the second sweep trace S2 (not shown), the source electrode of the 4th switching transistor T4 connects low level VSS, and the drain electrode of the 4th switching transistor T4 connects second utmost point of second capacitor C 2;
The grid of the 5th switching transistor T5 connects the second sweep trace S2 (as shown in Figure 1, 2) or the first sweep trace S1 (among the figure not shown in), and the source electrode of the 5th switching transistor T5 connects second utmost point of second capacitor C 2;
The grid of the 6th switching transistor T6 connects the first sweep trace S1 (as shown in Figure 1, 2) or the second sweep trace S2 (not shown), the source electrode of the 6th switching transistor T6 connects data line Dn, and the drain electrode of the 6th switching transistor T6 connects the drain electrode of the 3rd switching transistor T3;
The grid of driving transistors DTFT connects the drain electrode of the 6th switching transistor T6, and the source electrode of driving transistors DTFT connects first utmost point of second electric capacity;
Optionally, comprise with reference to light emitting module 21 shown in Figure 1: minion is closed transistor T 7 and luminescent device O1;
The grid that minion is closed transistor T 7 connects the first sweep trace S1 (not shown) or the second sweep trace S2 (as shown in Figure 1), and minion is closed the drain electrode of the source electrode connection driving transistors DTFT of transistor T 7;
The utmost point of luminescent device O1 connects the drain electrode that minion is closed transistor T 7, and another utmost point of luminescent device O1 connects the second level end V2.
Optionally, with reference to shown in Figure 2, light emitting module 21 also connects low level VSS, and light emitting module 21 comprises: minion is closed transistor T 7 and luminescent device O1;
The grid that minion is closed transistor T 7 connects the first sweep trace S1 (as shown in Figure 2) or the second sweep trace S2 (not shown), minion is closed the drain electrode of the source electrode connection driving transistors DTFT of transistor T 7, and the drain electrode that minion is closed transistor T 7 connects low level VSS;
The utmost point of luminescent device O1 connects the drain electrode of driving transistors DTFT, and another utmost point of luminescent device O1 connects the second level end V2.
Certainly the luminescent device O1 among Fig. 1 and Fig. 2 can be active light emitting diode OLED here, when this OLED is end during emitting OLED, and the level V of the second level end
2Be lower than the level V of the first level end
1Preferably, low level is an earth terminal; Certainly be example with end emitting OLED among Fig. 1 and 2.
Optionally, second switch transistor T 2, the 4th switching transistor T4, the 6th switching transistor T6 are same type of transistor, all connect same sweep trace.Wherein in the above-described embodiment because the 5th switching transistor T5 and the 4th switching transistor T4 and the 6th switching transistor T6 conducting simultaneously, therefore preferred, when the 4th switching transistor T4, the 6th switching transistor T6 and the 5th switching transistor T5 are same type of transistor, the 4th switching transistor T4, the 6th switching transistor T6 all connect the first sweep trace S1, and the grid of the 5th switching transistor T5 connects second sweep trace.
Further, driving transistors DTFT and amplifier transistor M1 are " P " transistor npn npn, preferred driving transistors DTFT, amplifier transistor M1 and switching transistor (T1～T7) be " P " transistor npn npn; The consistance of each transistor types also helps reducing making technology like this, guarantees the unitarity of device performance.
More than each grid is connected with the switching transistor of sweep trace (the first sweep trace S1 or the second sweep trace S2) type both do not limit and can be the P type yet for the N type; switching transistor with full P type among Fig. 1 is that example describes; certainly also be fine in suitable alternative types; and after the type of the switching transistor that changes response, also need to adjust sweep trace that its grid connects (under the immovable relatively situation of the signal on the sweep trace; be adjusted into the second sweep trace S2 or be adjusted into the first sweep trace S1 by the first sweep trace S1 by the second sweep trace S2) all should be in the protection domain of embodiment of the present utility model; the first switching transistor T1 and the 3rd switching transistor T3 are independent signal wire control, and therefore the first switching transistor T1 and the 3rd switching transistor T3 are " P " transistor or " N " transistor.
The touch-control display circuit structure that embodiment of the present utility model provides, the circuit of touch-control structure and the circuit of display unit are integrated, can form the touch-control structure that the utility model embodiment provides simultaneously by the processing flow of display unit, and then minimizing touches the making technology that shows in the process of producing product, save cost, can improve the product aperture opening ratio simultaneously and increase added value; Display unit can be avoided the influence of the threshold voltage shift of driving transistors to active luminescent device drive current by the mode of voltage compensation in addition, and then has improved the homogeneity of display image.
The touch-control display circuit structure the utility model embodiment that provides with reference to above each embodiment also provides the driving method of above each embodiment touch-control display circuit structure:
Phase one, the first switching transistor T1 and the 5th switching transistor T5 conducting, second switch transistor T 2, the 3rd switching transistor T3, the 4th switching transistor T4, the 5th switching transistor T5, the 6th switching transistor T6, minion are closed transistor T 7, driving transistors DTFT and amplifier transistor M1 and are ended, data line Dn input high level reset signal, the first touch-control electrode N1 voltage raises;
Subordinate phase, the first switching transistor T1 and the 5th switch crystal T5 pipe end, second switch transistor T 2, the 3rd switching transistor T3, the 4th switching transistor T4, the 6th switching transistor T6, minion are closed transistor T 7 and amplifier transistor DTFT conducting, and the first level end V1 is to 2 chargings of second capacitor C;
Phase III, the first switching transistor T1, the 3rd switching transistor T3 and the 5th switching transistor T5 end, second switch transistor T 2, the 4th switching transistor T4, the 6th switching transistor T6 and minion are closed transistor T 7 conducting conductings, the second sweep trace S2 provides high level coupling pulse signal, when touch-control electrode N1 is subjected to touching, second utmost point of first capacitor C 1 discharges and equals the threshold voltage of amplifier transistor M1 until the voltage difference of the grid of amplifier transistor M1 and source electrode, amplifier transistor M1 exports the coupling pulse signal amplification that the second sweep trace S2 provides on the signals collecting line L1 to, and second capacitor C 2 is discharged and equaled the threshold voltage of driving transistors until the voltage difference of the grid of driving transistors DTFT and source electrode;
The quadravalence section, the first switching transistor T1, second switch transistor T 2, the 4th switching transistor T4, the 6th switching transistor T6, minion close transistor T 7 and amplifier transistor M1 ends, the 3rd switching transistor T3 and the 5th switching transistor T5 conducting, the first level end V1 and the second level end V2 apply luminous signal to luminescent device O1.
Further when adopting light emitting module 21 shown in Figure 1, light emitting module 21 comprises minion pass transistor T 7 and luminescent device O1, and source electrode, the drain electrode of minion pass transistor T 7 are in parallel with the two poles of the earth of luminescent device, and this moment, this method also comprised:
Phase one, minion is closed transistor T 7 conductings;
Subordinate phase, minion are closed transistor T 7 and are ended;
Phase III, minion is closed transistor T 7 and is ended;
The quadravalence section, minion is closed transistor T 7 conductings, and the first level end V1 and the second level end V2 apply Continuity signal to luminescent device O1.
Optionally, when adopting light emitting module 21 shown in Figure 2, light emitting module 21 comprises that minion closes transistor T 7 and luminescent device O1, and source electrode, drain electrode that minion is closed transistor T 7 connect with luminescent device O1 the two poles of the earth, and this method also comprises at this moment:
Phase one, minion is closed transistor T 7 and is ended;
Subordinate phase, minion is closed transistor T 7 conductings;
Phase III, minion is closed transistor T 7 conductings;
The quadravalence section, minion pass transistor T 7 ends, and the first level end V1 and the second level end V2 apply Continuity signal to luminescent device.
Further optionally, driving transistors DTFT and amplifier transistor M1 are " P " transistor npn npn, and the first switching transistor T1 and the 3rd switching transistor T3 are " P " transistor or " N " transistor.
Here the first switching transistor T1, second switch transistor T 2, the 3rd switching transistor T3, the 4th switching transistor T4, the 5th switching transistor T5, the 6th switching transistor T6, minion being closed transistor T 7 and amplifier transistor M1 and driving transistors DTFT, all to adopt " P " transistor npn npn be that example describes.The signal sequence view of the touch-control display circuit that the circuit diagram that provides with reference to Fig. 2 and Fig. 3 provide provides a kind of driving method of touch-control display circuit to be elaborated to the utility model embodiment, specifically comprises:
Phase one, it is the very first time section in the time sequence status synoptic diagram shown in Fig. 3, the first signal control line K1, the second sweep trace S2 apply low level signal, secondary signal control line K2, the first sweep trace S1 and data line Dn apply high level signal, the first switching transistor T1 conducting of touch control unit, first capacitor C 1 charging of the high level reset signal that apply on the data line Dn this moment for being connected with touch-control electrode N1, this moment, the voltage of the D node that touch-control electrode N1 connects was increased to Vg, and this process is to prepare next stage.The 5th switching transistor T5 conducting of display unit, other transistors all are in cut-off state, and display unit is not worked.
Subordinate phase is second time period in the time sequence status synoptic diagram shown in Fig. 3, the first signal control line K1, the second sweep trace S2 and data line Dn apply high level signal, secondary signal control line K2, the first sweep trace S1 applies low level signal, first switching transistor of touch control unit ends, second switch transistor T 2 and amplifier transistor M1 conducting, this stage, the second sweep trace S2 provides high level for a utmost point of first electric capacity in touch control unit, form coupling capacitance, with reference to shown in Figure 4, because in the phase one is that the charging of first electric capacity forms voltage Vg (being the voltage of node D) on the touch-control electrode, when finger touches touch-control electrode N1 top, then can cause the voltage on the touch-control electrode to descend, and when the absolute value of the grid voltage of amplifier transistor M1 and source voltage difference during greater than transistorized on state threshold voltage, M1 can be by drain electrode at signals collecting line L1 output amplifying signal, and this stage for waiting for the touch-control incident takes place on the touch-control electrode; Need provide high level for the source electrode of amplifier transistor M1 owing to the second sweep trace S2 in this stage, so that after the grid generation voltage drop that touch event amplifier transistor M1 takes place on the touch-control electrode N1, constitute the turn-on condition of amplifier transistor M1, the absolute value that is grid and source voltage difference is greater than on state threshold voltage (source voltage is greater than grid voltage), and therefore the signal on the second sweep trace S2 is relatively-stationary.
And in this subordinate phase, the 3rd switching transistor T3 of display unit, the 4th switching transistor T4, the 6th switching transistor T6 and minion are closed transistor T 7 conductings, the 5th switching transistor T5 ends, this moment, minion was closed the shorted on both ends of transistor T 7 conductings with active light emitting diode OLED, and the first level end charges to memory capacitance C1; The equivalent circuit diagram that form circuit this moment as shown in Figure 5, in this process first utmost point of second capacitor C 2 voltage that promptly A order among the figure be charged to identical with the voltage of the first level end, A point voltage V at this moment
AEqual the voltage V of the first level end
1Second utmost point of second capacitor C 2 connects low level, and then second pole tension is B point voltage V
B=0; In like manner if adopt display module 21 shown in Figure 1, then this moment, minion pass transistor T 7 ended, and active light emitting diode OLED is isolated, and it acts on repeat no more identical with Fig. 2.
Phase III, it is the 3rd time period in the time sequence status synoptic diagram shown in Fig. 3, the first signal control line K1, the second sweep trace S2, secondary signal control line K2, data line Dn applies high level signal, the first sweep trace S1 applies low level signal, the first switching transistor T1 of touch control unit ends, 2 conductings of second switch transistor T, when finger touches touch-control electrode N1 top, then can cause the voltage on the touch-control electrode to descend, the coupled voltages that this moment, the second sweep trace S2 provided for first electric capacity can keep the source voltage of amplifier transistor M1 equally, because the grid of amplifier transistor M1 connects touch-control electrode N1, then the voltage on touch-control electrode N1 drops to Vd, (absolute value of turn-on condition grid voltage and source voltage difference was greater than transistorized on state threshold voltage here when the voltage drop Δ V that produces satisfied the turn-on condition of amplifier transistor M1, because grid voltage is less than source voltage when adopting P transistor npn npn so transistor turns), amplifier transistor M1 conducting also is in magnifying state, because second switch transistor T 2 conductings, then amplifier transistor M1 exports signals collecting line L1 to (with reference to the time sequence status figure of signals collecting line L1 shown in Figure 3 after the high level signal on the second sweep trace S2 can being amplified, promptly this signals collecting line L1 goes up the process that exists a voltage to rise), determine first coordinate direction by the first sweep trace S1 this moment, go up the signal changing value of output by signals collecting line L1 and determine second coordinate direction vertical, just can navigate to touch location with first coordinate direction.Here the signal with the first sweep trace S1 is the signal of X-axis coordinate direction, signal with signals collecting line L1 is a Y-axis coordinate direction coordinate direction, when the first sweep trace S1 input signal, just determined the coordinate of X-direction, this moment is because 2 conductings of second switch transistor T, then amplifier transistor T3 exports signals collecting line L1 to after the high level signal on the second sweep trace S2 can being amplified, this moment is during signal situation of change on detecting signals collecting line L1, just determined X simultaneously, coordinate position on two coordinate axis of Y, just determined touch location in view of the above, certainly touching the end back because touch-control electrode N1 can not keep original low-voltage Vd, therefore amplifier transistor M1 just ends after the absolute value of the voltage difference of grid source electrode is less than on state threshold voltage, and then the magnitude of voltage on the signals collecting line L1 descends rapidly.
And in this phase III, the 4th switching transistor T4 of display unit, the 6th switching transistor T6, minion are closed transistor T 7 conductings, the 3rd switching transistor T3, the 5th switching transistor T5 end, this moment, minion was closed transistor T 7 conductings still with the shorted on both ends of active light emitting diode OLED, and 2 discharges of second capacitor C equal the threshold voltage of driving transistors DTFT until the voltage difference of driving transistors DTFT grid and source electrode; The equivalent circuit diagram that form circuit this moment as shown in Figure 6, in this process first utmost point of second capacitor C 2 promptly among the figure A point begin to discharge, up to V
A-V
C=V
ThTill, V wherein
ABe the A point voltage, V
CFor the C point voltage is the grid voltage of driving transistors DTFT, this moment V
C=V
Data, V wherein
DataBe the magnitude of voltage that data line provides, V
ThBe the threshold voltage of driving transistors DTFT this moment, the voltage that last A is ordered becomes V
Data+ V
Th, this stage is compensated stage, and it is ready for the next stage to play buffer action simultaneously.In like manner if adopt display module 21 shown in Figure 1, then this moment, minion pass transistor T 7 ended, and active light emitting diode OLED is isolated, and it acts on repeat no more identical with Fig. 2.
The quadravalence section, it is the 4th time period in the time sequence status synoptic diagram shown in Fig. 3, the first signal control line K1, the first sweep trace S1 apply high level signal, secondary signal control line K2, the second sweep trace S2 and data line Dn apply low level, the first switching transistor T1, second switch transistor T 2 and the amplifier transistor M1 of touch control unit end, and this stage touch-control effect is stagnated.
End and close transistor T 7 in the 4th switching transistor T4, the 6th switching transistor T6, the minion of this quadravalence section display unit, the 3rd switching transistor T3 and the 5th switching transistor T5 conducting, the first level end V1 and the second level end V2 apply Continuity signal to luminescent device O1.In like manner if adopt display module 21 shown in Figure 1, then this moment, minion was closed transistor T 7 conductings, and the first level end V1 and the second level end V2 apply Continuity signal to luminescent device O1, and it acts on repeat no more identical with Fig. 2.The equivalent circuit diagram of the circuit that form this moment as shown in Figure 7, first pole tension of second capacitor C 2 comes back to the magnitude of voltage V identical with the first level end in this process
1, second utmost point suspension joint of second capacitor C 2, this moment, the voltage of first utmost point and second utmost point was realized equivalent saltus step, then V
B=V
C=V
1-V
Data-V
Th, active luminescent device begins luminous, and wherein drive current is according to formula:
By above formula drive current I as can be known
OLEDOnly and data line voltage V
DataValue has relation, so drive current is not subjected to V
ThInfluence, wherein, V
GSBe the voltage between TFT grid and the source electrode,
μ, C
OxBe process constant, W is the TFT channel width, and L is the channel length of thin film transistor (TFT), and W, L are the constant of alternative design.
More than be that to adopt end emitting OLED with luminescent device be that example describes, promptly the level of the first level end is higher than the level of the second level end; What can expect in addition is that when luminescent device employing end emitting OLED, the second level end can directly be connected with low level, is about to the negative pole connection low level of OLED, so also can reduce the design difficulty of circuit, the circuit pattern of being more convenient for.
Above embodiment is with the first switching transistor T1, second switch transistor T 2, the 3rd switching transistor T3, the 4th switching transistor T4, the 5th switching transistor T5, the 6th switching transistor T6, minion is closed transistor T 7, it is that example describes that amplifier transistor M1 and driving transistors DTFT are " P " type switching transistor, certainly in the making technology of display device, adopt the transistor of complete " P " type also to help reducing making technology, guarantee the unitarity of device performance, here just embodied the advantage that adopts LTPS technology, the transistor device that uses this technology to form, except carrier mobility speed height, (transistor can be done little, improve aperture opening ratio), in addition, can make amplifier transistor M1 have higher voltage breakdown, simultaneously, the signal of amplifier transistor M1 can reduce with the touch-control of finger, therefore uses the absolute value (grid voltage Vg＜source voltage Vs) of the pressure reduction between the easier realization amplifier transistor of the P transistor npn npn M1 grid source greater than Vth.
More than each grid is connected with the switching transistor of sweep trace (the first sweep trace S1 or the second sweep trace S2) type both do not limit and can be the P type yet for the N type; switching transistor with full P type among Fig. 2 is that example describes; certainly also be fine in suitable alternative types; and after the type of the switching transistor that changes response, also need by adjusting sweep trace that its grid connects (under the immovable relatively situation of the signal on the sweep trace; be adjusted into the second sweep trace S2 or be adjusted into the first sweep trace S1 by the first sweep trace S1 by the second sweep trace S2) all should be in the protection domain of embodiment of the present utility model; be example for example with touch-control display circuit shown in Figure 8 and signal sequence constitutional diagram shown in Figure 9; when with the second switch transistor T 2 among Fig. 2; the 4th switching transistor T4; the 6th switching transistor T6; when minion pass transistor is adjusted into N type switching transistor; the first sweep trace S1 can adopt identical clock signal with the second sweep trace S2; the grid that can connect grid the switching transistor of sweep trace (first sweep trace and second sweep trace) this moment all is connected to second sweep trace; clock signal control by second sweep trace; in a word similarly the connected mode of type by adjusting switching transistor and grid and sweep trace or combine adjustment sweep trace (first sweep trace and second sweep trace) upward clock signal cause all should in the protection domain of embodiment of the present utility model, repeating no more of circuit connecting mode change herein.Being embodiment of the present utility model does not limit the type of each switching transistor; only needing to adjust accordingly the level signal that signal lines or signal wire apply when adjusting the type of switching transistor gets final product; certainly be as the criterion with the driving method that can realize the touch-control display circuit that the utility model embodiment provides here, arbitrary combination that those skilled in the art can expect easily and realize on the basis of touch-control display circuit that the utility model embodiment provides and driving method is all in protection domain of the present utility model.
Fig. 1 that embodiment of the present utility model provides and its principle of work of touch-control display circuit shown in Figure 8 and can specifically repeat no more with reference to detailed description to touch-control display circuit shown in Figure 1.
The touch-control display circuit structure that embodiment of the present utility model provides, the circuit of touch-control structure and the circuit of display unit are integrated, can form the touch-control structure that the embodiment of the invention provides simultaneously by the processing flow of display unit, and then minimizing touches the making technology that shows in the process of producing product, save cost, can improve the product aperture opening ratio simultaneously and increase added value; Particularly, embodiments of the invention arrive the AMOLED driving circuit of display unit and the required two bars sweep traces and a data line (Vdata) compatibility of circuit of touch-control structure (in cell touch) together, have realized that AMOLED shows and the high effective integration of in cell touch function; Display unit can be avoided the influence of the threshold voltage shift of driving transistors to active luminescent device drive current by the mode of voltage compensation in addition, and then has improved the homogeneity of display image.
On the one hand, provide a kind of array base palte, comprising: above-mentioned arbitrary touch-control display circuit structure.
The array base palte that embodiment of the present utility model provides, the circuit of touch-control structure and the circuit of display unit are integrated, can form the touch-control structure that the utility model embodiment provides simultaneously by the processing flow of display unit, and then minimizing touches the making technology that shows in the process of producing product, save cost, can improve the product aperture opening ratio simultaneously and increase added value; Display unit can be avoided the influence of the threshold voltage shift of driving transistors to active luminescent device drive current by the mode of voltage compensation in addition, and then has improved the homogeneity of display image.
On the one hand, provide a kind of display device, comprising: above-mentioned array base palte.In addition, display device can also be Electronic Paper, mobile phone, TV, digital album (digital photo frame) or the like display device.
The display device that embodiment of the present utility model provides, the circuit of touch-control structure and the circuit of display unit are integrated, can form the touch-control structure that the utility model embodiment provides simultaneously by the processing flow of display unit, and then minimizing touches the making technology that shows in the process of producing product, save cost, can improve the product aperture opening ratio simultaneously and increase added value; Display unit can be avoided the influence of the threshold voltage shift of driving transistors to active luminescent device drive current by the mode of voltage compensation in addition, and then has improved the homogeneity of display image.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (10)
1. a touch-control display circuit structure is characterized in that, comprises touch control unit and display unit; The data line that is connected with described touch control unit, first sweep trace, second sweep trace, signals collecting line and first signal control line; The described data line that is connected with described display unit, described first sweep trace, described second sweep trace and secondary signal control line;
Wherein said touch control unit comprises: first switching transistor, second switch transistor, first electric capacity, first touch-control electrode and the amplifier transistor;
The source electrode of described first switching transistor connects described data line, and the grid of described first switching transistor connects described first signal control line;
Described touch-control electrode connects the drain electrode of described first switching transistor;
The grid of described amplifier transistor connects described touch-control electrode, and the source electrode of described amplifier transistor connects described second sweep trace;
The transistorized grid of described second switch connects described first sweep trace or second sweep trace, and the transistorized source electrode of described second switch connects the drain electrode of described amplifier transistor, and described second switch transistor drain connects described signals collecting line;
First utmost point of described first electric capacity connects described second sweep trace, and second utmost point of described first electric capacity connects described touch-control electrode;
Described display unit comprises: light emitting module, second electric capacity, driving transistors, the 3rd switching transistor, the 4th switching transistor, the 5th switching transistor, the 6th switching transistor;
The grid of described the 3rd switching transistor connects described secondary signal control line, and the source electrode of described the 3rd switching transistor connects the first level end, and the drain electrode of described the 3rd switching transistor connects first utmost point of described second electric capacity;
The grid of described the 4th switching transistor connects described first sweep trace or second sweep trace, and the source electrode of described the 4th switching transistor connects low level, and the drain electrode of described the 4th switching transistor connects second utmost point of described second electric capacity;
The grid of described the 5th switching transistor connects described first sweep trace or second sweep trace, and the source electrode of described the 5th switching transistor connects second utmost point of described second electric capacity;
The grid of described the 6th switching transistor connects described first sweep trace or second sweep trace, and the source electrode of described the 6th switching transistor connects described data line, and the drain electrode of described the 6th switching transistor connects the drain electrode of described the 3rd switching transistor;
The grid of described driving transistors connects the drain electrode of described the 6th switching transistor, and the source electrode of described driving transistors connects first utmost point of described second electric capacity;
Described light emitting module connects described first sweep trace or second sweep trace, the drain electrode of described driving transistors and the second level end, drain electrode and the described second level end of controlling described driving transistors by described first sweep trace or second sweep trace drive described light emitting module.
2. circuit structure according to claim 1 is characterized in that described light emitting module also connects described low level, and described light emitting module comprises: minion is closed transistor and luminescent device;
Described minion is closed transistorized grid and is connected described first sweep trace or second sweep trace, and described minion is closed the drain electrode that transistorized source electrode connects described driving transistors, and described minion is closed transistor drain and connected described low level;
One utmost point of described luminescent device connects the drain electrode of described driving transistors, and another utmost point of described luminescent device connects the second level end.
3. circuit structure according to claim 1 is characterized in that, described light emitting module comprises: minion is closed transistor and luminescent device;
Described minion is closed transistorized grid and is connected described first sweep trace or second sweep trace, and described minion is closed the drain electrode that transistorized source electrode connects described driving transistors;
One utmost point of described luminescent device connects described minion and closes transistor drain, and another utmost point of described luminescent device connects the second level end.
4. circuit structure according to claim 1 is characterized in that, second switch transistor, the 4th switching transistor, the 6th switching transistor are same type of transistor, all connects same sweep trace.
5. circuit structure according to claim 1, it is characterized in that, when the 4th switching transistor, the 6th switching transistor and the 5th switching transistor are same type of transistor, the 4th switching transistor, the 6th switching transistor all connect first sweep trace, and the grid of the 5th switching transistor connects second sweep trace.
6. according to each described circuit structure of claim 1～5, it is characterized in that described driving transistors and described amplifier transistor are " P " transistor npn npn.
7. circuit structure according to claim 6 is characterized in that, described driving transistors, described amplifier transistor and switching transistor are " P " transistor npn npn.
8. circuit structure according to claim 6 is characterized in that, described first switching transistor and described the 3rd switching transistor are " P " transistor npn npn or " N " transistor npn npn.
9. an array base palte is characterized in that, comprising:
Each described touch-control display circuit structure of claim 1～8.
10. a display device is characterized in that, comprising:
The described array base palte of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705149 CN203084684U (en) | 2012-12-18 | 2012-12-18 | Touching displaying circuit structure, array substrate and displaying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705149 CN203084684U (en) | 2012-12-18 | 2012-12-18 | Touching displaying circuit structure, array substrate and displaying device |
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| CN203084684U true CN203084684U (en) | 2013-07-24 |
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| CN 201220705149 Expired - Lifetime CN203084684U (en) | 2012-12-18 | 2012-12-18 | Touching displaying circuit structure, array substrate and displaying device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135846A (en) * | 2012-12-18 | 2013-06-05 | 北京京东方光电科技有限公司 | Touch control display circuit structure and driving method, array substrate and display device thereof |
| CN103971639A (en) * | 2014-05-06 | 2014-08-06 | 京东方科技集团股份有限公司 | Pixel drive circuit and method, array substrate and display device |
-
2012
- 2012-12-18 CN CN 201220705149 patent/CN203084684U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135846A (en) * | 2012-12-18 | 2013-06-05 | 北京京东方光电科技有限公司 | Touch control display circuit structure and driving method, array substrate and display device thereof |
| US9122339B2 (en) | 2012-12-18 | 2015-09-01 | Beijing Boe Optoelectronics Technology Co., Ltd. | Touch display circuit and driving method thereof, array substrate and display apparatus |
| CN103135846B (en) * | 2012-12-18 | 2016-03-30 | 北京京东方光电科技有限公司 | Touch display circuit structure and driving method, array base palte and display device |
| CN103971639A (en) * | 2014-05-06 | 2014-08-06 | 京东方科技集团股份有限公司 | Pixel drive circuit and method, array substrate and display device |
| US9465485B2 (en) | 2014-05-06 | 2016-10-11 | Boe Technology Group Co., Ltd. | Pixel driving circuit having a photosensitive sub-circuit and driving method therefor, and array substrate |
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