CN203366702U - Touch display driving circuit and display device - Google Patents
Touch display driving circuit and display device Download PDFInfo
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- CN203366702U CN203366702U CN2013204069223U CN201320406922U CN203366702U CN 203366702 U CN203366702 U CN 203366702U CN 2013204069223 U CN2013204069223 U CN 2013204069223U CN 201320406922 U CN201320406922 U CN 201320406922U CN 203366702 U CN203366702 U CN 203366702U
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Abstract
The utility model provides a touch display driving circuit and a display device. The touch display driving circuit comprises a light emitting unit, a light emitting control unit for controlling the light emitting of the light emitting unit, a driving unit for providing a touch and control detection current and the driving current of the light emitting unit, a storage unit for providing a voltage for the driving unit, a data writing control unit for controlling the writing of the voltage signal of a data line into the storage unit, a touch and control sensing unit for changing the voltage magnitude of the storage unit when the touch and control sensing unit is touched and providing output for the touch and control detection current, and a driving compensation control unit for compensating the voltage magnitude of the storage unit. The data writing control unit and the storage unit are connected; the storage unit and the driving unit are connected; the driving unit and the light emitting control unit are connected; the light emitting control unit and the light emitting unit are connected; the driving compensation control unit is connected with the two ends of the storage unit; the driving compensation control unit and the driving unit are connected; and the touch and control sensing unit and the driving unit are connected.
Description
Technical field
The utility model relates to the display technique field, is specifically related to a kind of touch display driver circuit and display device.
Background technology
Touch-screen obtains increasing the concern on consumption electronic product market.Touch-screen has been widely used in mobile electronic device as the interface of man-machine interaction at present, as Mobile phone screen, and notebook computer, digital camera etc.Touch-screen can be divided into two classes according to technology: externally positioned type (external) touch-screen and internally-arranged type (in-cell) touch-screen.The externally positioned type touch-screen is that a touching device is set on display panel, and the externally positioned type touch-screen has been widely used in the mobile application products such as mobile phone, yet externally positioned type touch-screen cost is higher, and thickness is larger.When needs are done increasingly by touch-screen, above-mentioned two shortcomings of externally positioned type touch-screen just display all the more.Current, consumer electronics product all wants cube less as mobile phone, panel computer etc., and thickness is thinner, and weight is lighter, and therefore the internally-arranged type touch-screen can solve above-mentioned two shortcomings well owing to being incorporated in display panel.
(Active Matrix Organic Light Emitting Diode, be called for short: application AMOLED) is more and more important for organic light emitting diode (AMOLED) panel.The pixel display device of AMOLED is Organic Light Emitting Diode (Organic Light-Emitting Diode, hereinafter to be referred as OLED), AMOLED can luminously be that this drive current driving OLED is luminous by driving thin film transistor (TFT) to produce drive current under state of saturation.At present, the AMOLED driving circuit adopts traditional 2T1C circuit usually, and this 2T1C circuit comprises two thin film transistor (TFT)s and 1 memory capacitance.
The inventor finds in prior art at least to exist following problem: traditional 2T1C circuit, can only carry out OLED and drive demonstration, the function that does not have internally-arranged type to touch, can't realize that internally-arranged type touches detection and OLED drives show integrated, increased the thickness of display screen.
The utility model content
The utility model provides a kind of touch display driver circuit and display device, can realize that touch detects and the pixel demonstration is integrated, reduces the thickness of display screen.
For achieving the above object, the utility model provides a kind of touch display driver circuit, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of described luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of described luminescence unit is provided, be used to described driver element that the storage unit of voltage is provided, write the data write control unit of described storage unit for the voltage signal of controlling data line, reach for the magnitude of voltage that changes described storage unit when touching generation the touch-control sensing unit that output is provided for described touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to described storage unit, wherein,
Described data write control unit is connected with described storage unit; Described storage unit is connected with described driver element; Described driver element is connected with described luminous controling unit; Described luminous controling unit is connected with described luminescence unit; Described driving compensation control module is connected with the two ends of described storage unit; Described driving compensation control module is connected with described driver element; Described touch-control sensing unit is connected with described driver element.
Alternatively, described data write control unit is connected with described storage unit by Section Point; Described storage unit is connected with described driver element by first node; Described driver element is connected with described luminous controling unit by the 4th node; Described luminous controling unit is connected with luminescence unit by the 5th node; Described driving compensation control module is connected with the two ends of described storage unit by described first node, described Section Point respectively; Described driving compensates control module and is connected with described driver element by described first node, described the 4th node respectively; Described touch-control sensing unit is connected with described driver element by the 3rd node, described first node, described the 4th node respectively.
Alternatively, described data write control unit comprises the 6th switching tube, and the grid of described the 6th switching tube is connected with sweep trace, and first utmost point of described the 6th switching tube is connected with data line, and second utmost point of described the 6th switching tube is connected with described Section Point.
Alternatively, described storage unit comprises memory capacitance, and the first end of described memory capacitance is connected with described Section Point, and the second end of described memory capacitance is connected with described first node.
Alternatively, described driver element comprises driving transistors, and the grid of described driving transistors is connected with described first node, and first utmost point of described driving transistors is connected with described the 3rd node, and second utmost point of described driving transistors is connected with described the 4th node.
Alternatively, described luminous controling unit comprises the first switching tube, and the grid of described the first switching tube is connected with the 3rd control line, and first utmost point of described the first switching tube is connected with described the 4th node, and second utmost point of described the first switching tube is connected with described the 5th node.
Alternatively, described luminescence unit includes OLED, and an end of described Organic Light Emitting Diode is connected with the 5th node, and the other end of described Organic Light Emitting Diode is connected with second source.
Alternatively, described driving compensation control module comprises the 4th switching tube and the 7th switching tube; The grid of described the 4th switching tube is connected with the grid of described the 7th switching tube, and first utmost point of described the 4th switching tube is connected with described first node; Second utmost point of described the 4th switching tube is connected with described the 4th node; The grid of described the 7th switching tube is connected with the second control line, and first utmost point of described the 7th switching tube is connected with described Section Point, and second utmost point of described the 7th switching tube is connected with second source.
Alternatively, described touch-control sensing unit comprises: photodiode, the 3rd switching tube and the 5th switching tube;
First utmost point of described photodiode is connected with described the 3rd node with the first power supply, and second utmost point of described photodiode is connected with first utmost point of described the 5th switching tube;
The grid of described the 5th switching tube is connected with the first control line, and second utmost point of described the 5th switching tube is connected with described first node;
The grid of described the 3rd switching tube is connected with described the first control line, and first utmost point of described the 3rd switching tube is connected with described the 4th node, and second utmost point of described the 3rd switching tube is connected with read line.
For achieving the above object, the utility model provides a kind of display device, comprises above-mentioned touch display driver circuit.
A kind of touch display driver circuit and display device that the utility model provides, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of luminescence unit is provided, be used to driver element that the storage unit of voltage is provided, for controlling the data write control unit of voltage signal write storage unit of data line, reach for the magnitude of voltage that changes storage unit when touching generation the touch-control sensing unit that output is provided for the touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to storage unit, wherein, the data write control unit is connected with storage unit, storage unit is connected with driver element, driver element is connected with luminous controling unit, luminous controling unit is connected with luminescence unit, drive the compensation control module to be connected with the two ends of storage unit, drive the compensation control module to be connected with driver element, touch-control sensing unit is connected with driver element.The technical solution of the utility model can realize touching detection and the pixel demonstration is integrated, reduces the thickness of display screen.
The accompanying drawing explanation
A kind of structural representation that touches display driver circuit that Fig. 1 provides for the utility model embodiment;
Fig. 2 touches the schematic diagram of the input voltage of display driver circuit in the utility model embodiment;
Fig. 3 touches the equivalent circuit diagram of display driver circuit touch-sensing initial phase in the utility model embodiment;
Fig. 4 is the equivalent circuit diagram that touches display driver circuit touch-sensing data write phase in the utility model embodiment;
Fig. 5 touches the equivalent circuit diagram that display driver circuit touches reconnaissance phase in the utility model embodiment;
Fig. 6 touches display driver circuit to drive the equivalent circuit diagram that shows initial phase in the utility model embodiment;
Fig. 7 touches display driver circuit to drive the equivalent circuit diagram that shows the data write phase in the utility model embodiment;
Fig. 8 touches the equivalent circuit diagram that the display driver circuit pixel shows the stage in the utility model embodiment.
Embodiment
For making those skilled in the art understand better the technical solution of the utility model, a kind of touch display driver circuit and the display device that the utility model are provided below in conjunction with accompanying drawing are described in further detail.
A kind of structural representation that touches display driver circuit that Fig. 1 provides for the utility model embodiment, as shown in Figure 1, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of luminescence unit is provided, be used to driver element that the storage unit of voltage is provided, for controlling the data write control unit of voltage signal write storage unit of data line, reach for the magnitude of voltage that changes storage unit when touching generation the touch-control sensing unit that output is provided for the touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to storage unit, wherein, the data write control unit is connected with storage unit, storage unit is connected with driver element, driver element is connected with luminous controling unit, luminous controling unit is connected with luminescence unit, drive the compensation control module to be connected with the two ends of storage unit, drive the compensation control module to be connected with driver element, touch-control sensing unit is connected with driver element.
Particularly, the data write control unit is connected with storage unit by Section Point B; Storage unit is connected with driver element by first node A; Driver element is connected with luminous controling unit by node the 4th node; Luminous controling unit is connected with luminescence unit by the 5th node E; Drive the compensation control module to be connected with the two ends of storage unit by first node A, described Section Point B respectively; Drive compensation to control list and be connected with driver element by first node A, the 4th node D respectively; Touch-control sensing unit is connected with driver element by the 3rd node C, first node A, the 4th node D respectively.
In the present embodiment, preferably, the data write control unit comprises the 6th switch transistor T 6; Storage unit comprises memory capacitance Cst; Driver element comprises driving transistors T2; Luminous controling unit comprises the first switch transistor T 1; Luminescence unit includes OLED D1; Drive the compensation control module to comprise the 4th switch transistor T 4 and the 7th switching tube T7; Touch-control sensing unit comprises: photodiode, the 3rd switch transistor T 3 and the 5th switch transistor T 5.In the present embodiment, photodiode is PD(photoelectric diode, is called for short PD).
Particularly, the grid of the 6th switch transistor T 6 is connected with sweep trace, and first utmost point of the 6th switch transistor T 6 is connected with data line, and second utmost point of the 6th switch transistor T 6 is connected with Section Point; The first end of memory capacitance Cst is connected with Section Point B, and the second end of memory capacitance Cst is connected with first node A; The grid of driving transistors T2 is connected with first node A, and first utmost point of driving transistors T2 is connected with the 3rd node C, and second utmost point of driving transistors T2 is connected with the 4th node D; The grid of the first switch transistor T 1 is connected with the 3rd control line, and first utmost point of the first switch transistor T 1 is connected with the 4th node D, and second utmost point of the first switch transistor T 1 is connected with the 5th node E; The end of Organic Light Emitting Diode D1 is connected with the 5th node E, and the other end of Organic Light Emitting Diode D1 is connected with second source VSS; The grid of the 4th switch transistor T 4 is connected with the grid of the 7th switching tube T7, and first utmost point of the 4th switch transistor T 4 is connected with first node A; Second utmost point of the 4th switch transistor T 4 is connected with the 4th node D; The grid of the 7th switching tube T7 is connected with the second control line, and first utmost point of the 7th switching tube T7 is connected with Section Point B, and second utmost point of the 7th switching tube T7 is connected with second source VSS.First utmost point of photodiode PD is connected with the 3rd node C with the first power vd D, second utmost point of photodiode PD is connected with first utmost point of the 5th switch transistor T 5, the grid of the 5th switch transistor T 5 is connected with the first control line, and second utmost point of the 5th switch transistor T 5 is connected with first node A; The grid of the 3rd switch transistor T 3 is connected with the first control line, and first utmost point of the 3rd switch transistor T 3 is connected with the 4th node D, and second utmost point of the 3rd switch transistor T 3 is connected with read line.
In the present embodiment, the voltage that the first power supply provides is VDD, and the voltage that second source provides is reference voltage VSS, and wherein, VDD can be high level, correspondingly, as the VSS of reference voltage, can be low level.The first switch transistor T 1, the 3rd switch transistor T 3, the 4th switch transistor T 4, the 5th switch transistor T 5, the 6th switch transistor T 6, the 7th switching tube T7 and driving transistors T2 are P type thin film transistor (TFT), first utmost point of driving transistors T2 is connected with the first power vd D, the negative pole of photodiode PD is connected with the first power vd D, and the negative pole of Organic Light Emitting Diode D1 is connected with second source VSS.
Below in conjunction with shown in Fig. 2 to Fig. 8, the course of work that touches display driver circuit in the present embodiment is described in detail.Fig. 2 touches the schematic diagram of the input voltage of display driver circuit in the present embodiment, can be divided into two stages sequential: touch control detection stage and glow phase, wherein: a is the touch-sensing initial phase, b is touch-sensing data write phases, c is for touching reconnaissance phase, d shows initial phase for driving, and e shows that for driving data write phase, f are that pixel shows the stage.Fig. 3 touches the equivalent circuit diagram of display driver circuit touch-sensing initial phase in the present embodiment.As shown in Figures 2 and 3, at touch-sensing initial phase a, the voltage that data line and sweep trace provide is high level, the voltage that the first control line provides is high level, the voltage that the second control line provides is low level, the voltage that the 3rd control line provides is high level, now, the first switch transistor T 1, the 3rd switch transistor T 3, the 5th switch transistor T 5 and the 6th switch transistor T 6 are closed, the 4th switch transistor T 4 and the 7th switching tube T7 conducting, therefore, touch the schematic equivalent circuit of display driver circuit in Fig. 1 as shown in Figure 3, the voltage that now second source VSS provides charges to Section Point B by the 7th switching tube T7, memory capacitance Cst is charged simultaneously, first node A produces coupled voltages, driving transistors T2 conducting, the first power vd D charges to first node A, the grid voltage V of driving transistors T2
gT2with first node A voltage V
aequate, i.e. V
gT2=V
a=VDD-V
th, wherein, V
thfor the threshold voltage of driving transistors T2, at this moment driving transistors T2 closes, and the first power vd D stops first node A is charged.
Fig. 4 is the schematic equivalent circuit that touches display driver circuit touch-sensing data write phase in the present embodiment, as shown in Figure 2 and Figure 4, when the data write phase b in touch-sensing stage, the voltage that data line and sweep trace provide is low level, the voltage that the first control line provides is high level, the voltage that the second control line provides is high level, the voltage that the 3rd control line provides is high level, now, the first switch transistor T 1, the 3rd switch transistor T 3, the 4th opens the light manages T4, the 5th switch transistor T 5 and the 7th switching tube T7 close, the 6th switch transistor T 6 conductings, therefore, touch the schematic equivalent circuit of display driver circuit in Fig. 1 as shown in Figure 4, the voltage that data line and sweep trace provide writes first node A through the 6th switch transistor T 6 and memory capacitance Cst, now, first node A is unsettled, without electric charge, shift, first node A voltage recruitment equals Section Point B voltage recruitment, be Δ V
b=V
data, therefore, first node A voltage V
a=vdata+VDD-V
th, wherein, V
datathe voltage provided for data line.
Fig. 5 touches the schematic equivalent circuit that display driver circuit touches reconnaissance phase in the present embodiment, as shown in Figure 2 and Figure 5, when touching reconnaissance phase c, the voltage that data line and sweep trace provide is high level, the voltage that the first control line provides is low level, the voltage that the second control line provides is high level, the voltage that the 3rd control line provides is high level, now, the first switch transistor T 1, the 4th switch transistor T 4, the 6th switch transistor T 6 and the 7th switching tube T7 close, the 3rd switch transistor T 3 and the 5th switch transistor T 5 conductings, therefore, touch the schematic equivalent circuit of display driver circuit in Fig. 1 as shown in Figure 5, first node A voltage remains unchanged, for V
a=Vdata+VDD-V
thin this stage, photodiode PD can produce leakage current when the irradiation that is subject to light, electric charge on memory capacitance Cst is because the electric leakage that photodiode PD is produced by illumination greatly reduces, cause first node A voltage to decline to a great extent, first node A voltage drop further cause the flowing through electric current of driving transistors T2 reduces, the electric current reduced is by the 3rd switch transistor T 3 read line of flowing through, external drive circuit is detected parsing to the electric current reduced on the read line of flowing through, thereby judges the generation of touch.Illumination is stronger, and the electric current reduced is more, thereby judges the generation of touch.Driving transistors T2 provides the touch control detection electric current according to the magnitude of voltage of memory capacitance Cst, and the electric current of driving transistors T2 is read detection by described the 3rd switch transistor T 3 by read line.
Fig. 6 touches display driver circuit to drive demonstration initial phase schematic equivalent circuit in the present embodiment, as shown in Figure 2 and Figure 6, driving demonstration initial phase d, the voltage that data line and sweep trace provide is high level, the voltage that the first control line provides is high level, the voltage that the second control line provides is low level, the voltage that the 3rd control line provides is high level, now, the first switch transistor T 1, the 3rd switch transistor T 3, the 5th switch transistor T 5 and the 6th switch transistor T 6 are closed, the 4th switch transistor T 4 and the 7th switching tube T7 conducting, now driving transistors T2 is a diode, touch the schematic equivalent circuit of display driver circuit in Fig. 1 as shown in Figure 6, the voltage that second source VSS provides charges to Section Point B by the 7th switching tube T7, first node A produces coupled voltages, make driving transistors T2 conducting, the first power vd D is charged by driving transistors T2 and 4 couples of first node A of the 4th switch transistor T, the grid voltage V of driving transistors T2
gT2with first node A voltage V
aequate, i.e. V
gT2=V
a=VDD-V
ththe time, the first power vd D stops first node A is charged.
Fig. 7 touches display driver circuit to drive the schematic equivalent circuit that shows the data write phase in the present embodiment, as shown in Figure 2 and Figure 7, driving demonstration data write phase e, the voltage that data line and sweep trace provide is low level, the voltage that the first control line provides is high level, the voltage that the second control line provides is high level, the voltage that the 3rd control line provides is high level, the first switch transistor T 1 now, the 3rd switch transistor T 3, the 4th switch transistor T 4, the 5th switch transistor T 5 and the 7th switching tube T7 close, the 6th switch transistor T 6 conductings, touch the schematic equivalent circuit of display driver circuit in Fig. 1 as shown in Figure 7, the voltage that data line provides writes first node A by the 6th switch transistor T 6 and memory capacitance Cst, first node A is unsettled, without electric charge, shift, first node A voltage recruitment equals Section Point B voltage recruitment, be Δ V
b=V
data, therefore, first node A voltage V
a=Vdata+VDD-V
th.
Fig. 8 touches the schematic equivalent circuit that the display driver circuit pixel shows the stage in the present embodiment, as shown in Figure 2 and Figure 8, the voltage that data line and sweep trace provide is high level, the voltage that the first control line provides is high level, the voltage that the second control line provides is high level, the voltage that the 3rd control line provides is low level, now, the 3rd switch transistor T 3, the 4th switch transistor T 4, the 5th switch transistor T 5, the 6th switch transistor T 6 and the 7th switching tube T7 close, the first switch transistor T 1 conducting, touch the schematic equivalent circuit of display driver circuit in Fig. 1 as shown in Figure 8, the grid voltage of driving transistors T2 equates with first node A voltage, be V
gT2=V
a=Vdata+VDD-V
th, the electric current that now flows through driving transistors T2 is:
I=K (V
sg-| V
th|)
2=K (VDD-Vdata-VDD+|V
th|-| V
th|)
2=K (Vdata) w, wherein, V
sgfor the gate source voltage of driving transistors connection T2, V
thfor the threshold voltage of driving transistors T2, as shown from the above formula, flow through the drive current of driving transistors T2 and the threshold voltage V of driving transistors T2
thirrelevant, avoided the drive current that flows through Organic Light Emitting Diode D1 to be subject to threshold voltage V
ththe impact of inhomogeneous and drift, simultaneously, the drive current that flows through driving transistors T2 also with self cut-in voltage V of Organic Light Emitting Diode D1
th-oledirrelevant, avoided drive current to be subject to self cut-in voltage V that Organic Light Emitting Diode D1 degenerates and causes
th-oledthe impact raise, thus the homogeneity of the drive current that flows through Organic Light Emitting Diode D1 improved.Driving transistors T2 provides the drive current of OLED D1, and driving transistors T2 provides the drive current of OLED D1 according to the magnitude of voltage of memory capacitance Cst.
The touch display driver circuit that the present embodiment provides, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of luminescence unit is provided, be used to driver element that the storage unit of voltage is provided, for controlling the data write control unit of voltage signal write storage unit of data line, reach for the magnitude of voltage that changes storage unit when touching generation the touch-control sensing unit that output is provided for the touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to storage unit, wherein, the data write control unit is connected with storage unit, storage unit is connected with driver element, driver element is connected with luminous controling unit, luminous controling unit is connected with luminescence unit, drive the compensation control module to be connected with the two ends of storage unit, drive the compensation control module to be connected with driver element, touch-control sensing unit is connected with driver element, and it can realize touching detection and the pixel demonstration is integrated, reduces the thickness of display screen.
It should be noted that, in the utility model embodiment, in the first switch transistor T 1, the 3rd switch transistor T 3, the 4th switch transistor T 4, the 5th switch transistor T 5, the 6th switch transistor T 6, the 7th switching tube T7 and each transistor of driving transistors T2, first utmost point and second utmost point are as source-drain electrode.In described transistor, the structure of first utmost point and second utmost point is identical.During practical application, for a transistor, the position according to this transistor in circuit and effect, first utmost point can be used as source electrode, and correspondingly, second utmost point is as drain electrode; Perhaps, first utmost point can be used as drain electrode, and correspondingly, second utmost point is as source electrode.
The utility model embodiment also provides a kind of display device, this display device comprises the touch display driver circuit, this touches display driver circuit and adopts the touch display driver circuit in above-described embodiment, and its embodiment refers to above-described embodiment, no longer specifically describes herein.
The display device that the utility model embodiment provides comprises the touch display driver circuit, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of luminescence unit is provided, be used to driver element that the storage unit of voltage is provided, for controlling the data write control unit of voltage signal write storage unit of data line, for the magnitude of voltage that changes storage unit when touching generation, reach as providing the touch control detection electric current that the touch-control sensing unit of output is provided, the driving compensation control module compensated for the magnitude of voltage to storage unit, wherein, the data write control unit is connected with storage unit, storage unit is connected with driver element, driver element is connected with luminous controling unit, luminous controling unit is connected with luminescence unit, drive the compensation control module to be connected with the two ends of storage unit, drive the compensation control module to be connected with driver element, touch-control sensing unit is connected with driver element, and it can realize touching detecting and the pixel demonstration is integrated, reduces the thickness of display screen.
The utility model embodiment also provides a kind of touch display drive method, this touches the touch display driver circuit of display drive method based in above-described embodiment, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of luminescence unit is provided, be used to driver element that the storage unit of voltage is provided, for controlling the data write control unit of voltage signal write storage unit of data line, reach for the magnitude of voltage that changes storage unit when touching generation the touch-control sensing unit that output is provided for the touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to storage unit, wherein, the data write control unit is connected with storage unit, storage unit is connected with driver element, driver element is connected with luminous controling unit, luminous controling unit is connected with luminescence unit, drive the compensation control module to be connected with the two ends of storage unit, drive the compensation control module to be connected with driver element, touch-control sensing unit is connected with driver element.
Wherein, the data write control unit comprises the 6th switching tube; Touch-control sensing unit comprises: photodiode, the 3rd switching tube and the 5th switching tube; Driver element comprises driving transistors; Storage unit comprises memory capacitance; Luminous controling unit comprises the first switching tube; Luminescence unit includes OLED; Drive the compensation control module to comprise the 4th switching tube and the 7th switching tube.
In the present embodiment, this touch display drive method comprises:
Step S101, touch control detection stage: drive compensation control module initialization storage unit, the data write control unit is by the voltage signal write storage unit of data line, luminous controling unit disconnection luminescence unit is connected with described driver element, touch-control sensing unit changes the voltage of storage unit, driver element provides the touch control detection electric current according to the magnitude of voltage of storage unit, and touch-control sensing unit provides output for the touch control detection electric current;
Particularly, the touch control detection stage is specially: the 4th switching tube and the 7th switching tube conducting, second source is the first end charging to memory capacitance by the 7th switching tube, the driving transistors conducting, the first power supply is the second end charging to memory capacitance by driving transistors and the 4th switching tube, until driving transistors is closed; The 6th switching tube conducting, the second end that first end and the memory capacitance of the voltage signal of data line by memory capacitance writes memory capacitance; The first switching tube is closed, the 3rd switching tube and the 5th switching tube conducting, and the leakage current of photodiode reduces the voltage of the second end of memory capacitance by the 5th switching tube, and the electric current of driving transistors is read detection by the 3rd switching tube by read line;
Step S102, glow phase: drive compensation control module initialization storage unit, the data write control unit is by the voltage signal write storage unit of data line, described luminous controling unit makes luminescence unit be connected with driver element, touch-control sensing unit does not change the voltage of storage unit, and driver element provides the drive current of luminescence unit according to the magnitude of voltage of storage unit.
Particularly, glow phase is specially: the 4th switching tube and the 7th switching tube conducting, second source is the first end charging to memory capacitance by the 7th switching tube, the driving transistors conducting, the first power supply is the second end charging to memory capacitance by driving transistors and the 4th switching tube, until driving transistors is closed; The 6th switching tube conducting, the second end that first end and the memory capacitance of the voltage signal of data line by memory capacitance writes memory capacitance; The first switching tube conducting, the 3rd switching tube and the 5th switching tube are closed, and the electric current of driving transistors drives Organic Light Emitting Diode luminous by the first switching tube.
Touch display drive method in the utility model embodiment can be based in above-described embodiment the touch display driver circuit realize, its embodiment refers to above-described embodiment, no longer specifically describes herein.
The touch display drive method that the utility model embodiment provides, this touches display drive method based on touching display driver circuit, this touch display driver circuit comprises: luminescence unit, for controlling the luminous luminous controling unit of luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of luminescence unit is provided, be used to driver element that the storage unit of voltage is provided, for controlling the data write control unit of voltage signal write storage unit of data line, reach for the magnitude of voltage that changes storage unit when touching generation the touch-control sensing unit that output is provided for the touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to storage unit, wherein, the data write control unit is connected with storage unit, storage unit is connected with driver element, driver element is connected with luminous controling unit, luminous controling unit is connected with luminescence unit, drive the compensation control module to be connected with the two ends of storage unit, drive the compensation control module to be connected with driver element, touch-control sensing unit is connected with driver element, and it can realize touching detection and the pixel demonstration is integrated, reduces the thickness of display screen.
Be understandable that, above embodiment is only the illustrative embodiments adopted for principle of the present utility model is described, yet the utility model is not limited to this.For those skilled in the art, in the situation that do not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection domain of the present utility model.
Claims (10)
1. one kind touches display driver circuit, it is characterized in that, comprise: luminescence unit, for controlling the luminous luminous controling unit of described luminescence unit, be used for the driver element that the touch control detection electric current is provided or the drive current of described luminescence unit is provided, be used to described driver element that the storage unit of voltage is provided, write the data write control unit of described storage unit for the voltage signal of controlling data line, reach for the magnitude of voltage that changes described storage unit when touching generation the touch-control sensing unit that output is provided for described touch control detection electric current, the driving compensation control module compensated for the magnitude of voltage to described storage unit, wherein,
Described data write control unit is connected with described storage unit; Described storage unit is connected with described driver element; Described driver element is connected with described luminous controling unit; Described luminous controling unit is connected with described luminescence unit; Described driving compensation control module is connected with the two ends of described storage unit; Described driving compensation control module is connected with described driver element; Described touch-control sensing unit is connected with described driver element.
2. touch display driver circuit according to claim 1, is characterized in that,
Described data write control unit is connected with described storage unit by Section Point; Described storage unit is connected with described driver element by first node; Described driver element is connected with described luminous controling unit by the 4th node; Described luminous controling unit is connected with luminescence unit by the 5th node; Described driving compensation control module is connected with the two ends of described storage unit by described first node, described Section Point respectively; Described driving compensation control module is connected with described driver element by described first node, described the 4th node respectively; Described touch-control sensing unit is connected with described driver element by described the 3rd node, described first node, described the 4th node respectively.
3. touch display driver circuit according to claim 2, it is characterized in that, described data write control unit comprises the 6th switching tube, the grid of described the 6th switching tube is connected with sweep trace, first utmost point of described the 6th switching tube is connected with data line, and second utmost point of described the 6th switching tube is connected with described Section Point.
4. touch display driver circuit according to claim 2, is characterized in that,
Described storage unit comprises memory capacitance, and the first end of described memory capacitance is connected with described Section Point, and the second end of described memory capacitance is connected with described first node.
5. touch display driver circuit according to claim 2, is characterized in that,
Described driver element comprises driving transistors, and the grid of described driving transistors is connected with described first node, and first utmost point of described driving transistors is connected with described the 3rd node, and second utmost point of described driving transistors is connected with described the 4th node.
6. touch display driver circuit according to claim 2, is characterized in that,
Described luminous controling unit comprises the first switching tube, and the grid of described the first switching tube is connected with the 3rd control line, and first utmost point of described the first switching tube is connected with described the 4th node, and second utmost point of described the first switching tube is connected with described the 5th node.
7. touch display driver circuit according to claim 2, is characterized in that,
Described luminescence unit includes OLED, and an end of described Organic Light Emitting Diode is connected with described the 5th node, and the other end of described Organic Light Emitting Diode is connected with second source.
8. touch display driver circuit according to claim 2, is characterized in that,
Described driving compensation control module comprises the 4th switching tube and the 7th switching tube; The grid of described the 4th switching tube is connected with the grid of described the 7th switching tube, and first utmost point of described the 4th switching tube is connected with described first node; Second utmost point of described the 4th switching tube is connected with described the 4th node; The grid of described the 7th switching tube is connected with the second control line, and first utmost point of described the 7th switching tube is connected with described Section Point, and second utmost point of described the 7th switching tube is connected with second source.
9. touch display driver circuit according to claim 2, is characterized in that,
Described touch-control sensing unit comprises: photodiode, the 3rd switching tube and the 5th switching tube;
First utmost point of described photodiode is connected with described the 3rd node with the first power supply, and second utmost point of described photodiode is connected with first utmost point of described the 5th switching tube;
The grid of described the 5th switching tube is connected with the first control line, and second utmost point of described the 5th switching tube is connected with described first node;
The grid of described the 3rd switching tube is connected with described the first control line, and first utmost point of described the 3rd switching tube is connected with described the 4th node, and second utmost point of described the 3rd switching tube is connected with read line.
10. a display device, is characterized in that, comprises the described touch display driver circuit of claim 1-9 any one.
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| CN2013204069223U CN203366702U (en) | 2013-07-09 | 2013-07-09 | Touch display driving circuit and display device |
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| CN2013204069223U CN203366702U (en) | 2013-07-09 | 2013-07-09 | Touch display driving circuit and display device |
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