CN102855044A - Touch display device - Google Patents
Touch display device Download PDFInfo
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- CN102855044A CN102855044A CN2012103374958A CN201210337495A CN102855044A CN 102855044 A CN102855044 A CN 102855044A CN 2012103374958 A CN2012103374958 A CN 2012103374958A CN 201210337495 A CN201210337495 A CN 201210337495A CN 102855044 A CN102855044 A CN 102855044A
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Abstract
The invention relates to the technical field of touch control, in particular to a touch display device, and aims to improve image displaying quality of the touch display device. The touch display device comprises an OLED (organic light-emitting diode) panel and a flexible circuit board COF (chip-on flex), wherein the OLED panel is provided with an array circuit, the COF is fixed on the OLED panel, the array circuit comprises a plurality of driving electrodes arrayed transversely and a plurality of data electrodes arrayed longitudinally, and the COF comprises a grid driving integrated circuit in signal connection with the driving electrodes, a source driving integrated circuit in signal connection with the data electrodes, a touch integrated circuit respectively in signal connection with at least one driving electrode and at least one data electrode, and a time sequence control integrated circuit respectively in signal connection with the touch integrated circuit, the grid driving integrated circuit and the source driving integrated circuit.
Description
Technical field
The present invention relates to the touch technology field, in particular, relate to a kind of touch control display apparatus.
Background technology
At present, existing Organic Light Emitting Diode (Organic Light-Emitting Diode, hereinafter to be referred as OLED) touch control display apparatus comprises: oled panel, is fitted in the contact panel on the oled panel and is fixed on flexible circuit board (Chip On Film is hereinafter to be referred as COF) on the oled panel; Wherein, oled panel has the demonstration image function, contact panel is used for realizing touch controllable function, COF comprises: the grid-driving integrated circuit that is connected with drive electrode signal in the oled panel, the source electrode driven integrated circuit that is connected with data electrode signal in the oled panel, respectively with contact panel in drive wire and the touch-control integrated circuit that is connected the line signal and is connected, respectively with grid-driving integrated circuit, the sequential control integrated circuit that source electrode driven integrated circuit is connected with the touch-control integrated circuit signal, the connector that is connected with the sequential control integrated circuit signal, and the supply convertor that operating voltage is provided for said integrated circuit.Above-mentioned OLED touch control display apparatus utilizes touch-control IC scanning drive wire and receives line, thereby determines the positional information of touch point on contact panel; Sequential control integrated circuit timesharing driving grid drive integrated circult, source electrode driven integrated circuit make oled panel realize showing image function.
Above-mentioned contact panel comprises reflection-proof coating, protective seam, adhered layer, transparent electrode layer, the transparency carrier that sets gradually.Wherein transparent electrode layer comprises: drive wire Tx and reception line Rx, drive wire Tx namely on transparency carrier with transparent conductive material ITO(Indium Tin Oxide for example, indium tin oxide) transverse electrode of making, receive the longitudinal electrode that line Rx namely makes of ITO on transparency carrier, therefore will form electric capacity in the place that two arrays of electrodes intersects, during touch, affect the coupling between near two electrodes in touch point, thereby changed the electric capacity between these two electrodes.By the sweep signal that the touch-control integrated circuit sends, scanning contact panel drive wire Tx line by line and receive line Rx, thus calculate the coordinate of touch point, realize touch controllable function.
Above-mentioned oled panel comprises substrate, anode layer, emission layer, cathode layer, the peripheral protective seam that sets gradually, and is arranged on the array circuit on the substrate; Wherein, as shown in Figure 1, array circuit 101 comprises: the data electrode (row electrode) of a plurality of transversely arranged a plurality of longitudinal arrangements of drive electrode (column electrode); Wherein, drive electrode is connected with data electrode with the OLED light-emitting component and is connected, and are connected with source electrode driven integrated circuit with grid-driving integrated circuit 202 respectively and are connected, when grid-driving integrated circuit 202 is opened the delegation of drive electrode, data electrode downloads to corresponding R (red to the data of this row, redness), G(green, green), B(blue, blueness) on the light-emitting component of three kinds of colors, these data are the voltage signal of control OLED brightness, this voltage signal is used for controlling the size of current that flows through OLED, thereby realizes that OLED shows different brightness.Under the effect of sequential control circuit, pulse signal is added on the drive electrode one by one, and which drive electrode pulse signal is added to, and the row at this drive electrode place just shows the Pixel Information of delegation simultaneously, horizontal drive circuit mobile one-period from top to bottom namely shows a field picture like this.
From the foregoing, contact panel generally is comprised of sandwich construction, is fitted in the surface of oled panel, can affect the transmitance of oled panel light, thereby affects OLED touch control display apparatus picture disply quality.
Summary of the invention
The object of the present invention is to provide a kind of touch control display apparatus, need to be on oled panel sticking touch control panel, in order to improve the picture disply quality of touch control display apparatus.
In order to achieve the above object, the invention provides following technical scheme:
A kind of touch control display apparatus comprises: Organic Light Emitting Diode oled panel and the flexible circuit board COF that is fixed on the described oled panel with array circuit; Wherein,
Described array circuit comprises: a plurality of transversely arranged drive electrodes and the data electrode of a plurality of longitudinal arrangements;
Described COF comprises: the grid-driving integrated circuit that is connected with described a plurality of drive electrode signals, the source electrode driven integrated circuit that is connected with described a plurality of data electrode signals, respectively with at least one described drive electrode be connected the touch-control integrated circuit that described data electrode signal is connected, the sequential control integrated circuit that is connected with described touch-control integrated circuit, grid-driving integrated circuit and source electrode driven integrated circuit signal respectively.
Preferably, above-mentioned touch control display apparatus also comprises: respectively with described sequential control integrated circuit be connected the touch-control integrated circuit signal and be connected, be used for the connector of image signal transmission and control signal.
Preferably, above-mentioned sequential control integrated circuit comprises: be used for generating the time schedule controller of scanning sequence, be connected, be used for storing the storer of described scanning sequence with described time schedule controller signal.
Preferably, above-mentioned touch control display apparatus also comprises respectively and being electrically connected with described sequential control integrated circuit, touch-control integrated circuit, grid-driving integrated circuit and source electrode driven integrated circuit, is used to each integrated circuit that the supply convertor of operating voltage is provided.
In the present invention, utilize array circuit in the oled panel, can form the characteristics of electric capacity in the place of drive electrode and data electrode intersection, all or part of drive electrode in the array circuit is realized the drive wire Tx of touch controllable function as oled panel, the all or part of data electrode of array circuit is realized the reception line Rx of touch controllable function as oled panel, and the electrode that is elected to be respectively drive wire Tx and receives line Rx is connected to the touch-control integrated circuit, then utilize the timesharing of sequential control integrated circuit to drive function, control touch-control integrated circuit scans the electrode as drive wire Tx and reception line Rx line by line, and then obtain the positional information of touch point, realize touch controllable function.More particularly, in the present invention, at least one drive electrode signal of touch-control integrated circuit and the array circuit that is arranged in oled panel is connected and is connected the connection of data electrode signal, respectively these drive electrodes that are connected with the touch-control integrated circuit signal and data electrode are realized the drive wire Tx of touch controllable function and received line Rx as oled panel, then the timesharing by the sequential control integrated circuit drives function, control touch-control integrated circuit scans line by line as oled panel and realizes the drive wire Tx of touch controllable function and receive line Rx, thereby obtain the positional information of touch point, realize touch controllable function.Therefore, compared with prior art, touch control display apparatus provided by the invention need not also can reach touch display function at other contact panels of oled panel applying, and improved the transmittance of touch control display apparatus, thereby improve the picture disply quality of OLED touch control display apparatus.
Description of drawings
Fig. 1 is that the OLED array circuit drives schematic diagram in the prior art;
Fig. 2 is the structural representation of touch control display apparatus in the embodiment of the invention;
Fig. 3 is the drive system block diagram of touch control display apparatus in the embodiment of the invention;
Fig. 4 is the schematic diagram that timesharing drives array circuit in the embodiment of the invention.
Embodiment
Existing OLED touch control display apparatus generally comprises: oled panel, be fitted in the contact panel on the oled panel and be fixed on flexible circuit board COF on the oled panel, although can satisfy user's request for utilization, but the transmittance of OLED touch control display apparatus is lower, affects the picture disply quality of OLED touch control display apparatus.
In view of this, the invention provides a kind of improved technical scheme, utilize the drive electrode of the array circuit in the oled panel and place that data electrode intersects can form the characteristics of electric capacity, the all or part of drive electrode of array circuit is realized the drive wire Tx of touch controllable function as oled panel, the all or part of data electrode of array circuit is realized the reception line Rx of touch controllable function as oled panel, and the electrode that is elected to be respectively drive wire Tx and receives line Rx is connected to the touch-control integrated circuit, then utilize the timesharing of sequential control integrated circuit to drive function, control touch-control integrated circuit scans the electrode as drive wire Tx and reception line Rx line by line, and then obtain the positional information of touch point, realize touch controllable function.In the present invention, need not also can reach touch display function, and improve the transmittance of OLED touch control display apparatus, thereby improve the picture disply quality of touch control display apparatus at other contact panels of oled panel applying.
Below in conjunction with Figure of description the touch control display apparatus that the embodiment of the invention provides is described in detail.
Referring to Fig. 2, be the structural representation of touch control display apparatus in the embodiment of the invention.This touch control display apparatus comprises: oled panel 100 and the flexible circuit board COF 200 that is fixed on the oled panel 100 with array circuit 101; Wherein,
In the present embodiment; oled panel 100 adopts active (active driving) type of drive; comprise: substrate, anode layer, emission layer, cathode layer and peripheral protective seam; and array circuit 101 is arranged in oled panel 100, and array circuit 101 can be thin film transistor (TFT) (TFT) array circuit or other switch unit array circuit.Array circuit 101 comprises: a plurality of transversely arranged drive electrodes and the data electrode of a plurality of longitudinal arrangements; And be connected with the OLED light-emitting component respectively.Need to prove, can form electric capacity in the place of drive electrode and data electrode intersection, therefore, when touching oled panel, the electric capacity in electrode crossing place is changed.
Continuation is referring to Fig. 2, and COF 200 is a kind of flexible circuit board that are packaged with integrated circuit, is fixed on the oled panel 100 by hot pressing technique.COF 200 comprises: touch-control integrated circuit 201, grid-driving integrated circuit 202, source electrode driven integrated circuit 203 and sequential control integrated circuit 204, wherein, touch-control integrated circuit 201 respectively with array circuit 101 in one or more drive electrodes with are connected the data electrode signal and are connected, in other words, touch-control integrated circuit 201 is connected with at least one drive electrode signal, and these drive electrodes are realized the drive wire Tx of touch controllable function as oled panel 100; Touch-control integrated circuit 201 is connected with at least one data electrode signal, and these data electrodes are realized the reception line Rx of touch controllable function as oled panel 100.Wherein, the quantity of selected drive wire Tx and reception line Rx is decided according to resolution, and that chooses is more, and resolution is just higher, preferably, according to the physical size of resolution and oled panel, chooses uniformly drive wire Tx and receives line Rx; Choose in embodiments of the present invention all drive electrodes and realize the drive wire Tx of touch controllable function as oled panel 100, choose all data electrodes are realized touch controllable function as oled panel 100 reception line Rx.
Touch-control integrated circuit 201 also is connected with sequential control integrated circuit 204 signals, when receiving the first steering order of sequential control integrated circuit 204 transmissions, scan respectively drive electrode and the data electrode that is connected to, capacitance variations according to the touch point, thereby draw the positional information of the touch point on oled panel 100, realize touch controllable function.
Above-mentioned sequential control integrated circuit 204 comprises: be used for generating the time schedule controller of scanning sequence, be connected, be used for storing the storer of described scanning sequence with described time schedule controller signal.In the present embodiment, the scanning sequence that sequential control integrated circuit 204 generates comprises the first steering order and the second steering order, sequential control integrated circuit 204 is connected signal with touch-control integrated circuit 201, grid-driving integrated circuit 202 respectively and is connected with source electrode driven integrated circuit, when sequential control integration circuit 204 sent the second steering order, control grid-driving integrated circuit 202 and source electrode driven integrated circuit 203 drove array circuit 101 and carry out the image demonstration.Wherein, grid-driving integrated circuit 202 is connected with each drive electrode signal of array circuit 101; Source electrode driven integrated circuit 203 is connected with each data electrode signal of array circuit 101.
Need to prove the output control signal OE1 that above-mentioned the first steering order is grid-driving integrated circuit 202; The second steering order comprises: the enabling signal STV of grid-driving integrated circuit 202 and movable signal CPV, and the commencing signal STH of the capable data of source electrode driven integrated circuit 203 and clock signal C PH.When sequential control integration circuit 204 sends the first steering order, namely when the OE1 signal arrives, grid-driving integrated circuit 202 and source electrode driven integrated circuit 203 are not opened, when sequential control integration circuit 204 sent the second steering order, grid-driving integrated circuit 202 and source electrode driven integrated circuit 203 drove array circuit 101 and carry out the image demonstration.
Preferably, above-mentioned touch control display apparatus also comprises: are connected signal with the touch-control integrated circuit with sequential control integrated circuit 204 respectively and are connected, be used for the connector 205 of image signal transmission and control signal; Sequential control integrated circuit 204 obtains picture signal and control signal from connector 205, and described picture signal is converted into horizontal-drive signal and row drive signal, and generate the second steering order according to described control signal, start described grid-driving integrated circuit 202 and described source electrode driven integrated circuit 203 and receive respectively described horizontal-drive signal and described row and drive signal and carry out image and show.Touch-control integrated circuit 201 sends to the ambient systems end with the positional information of the touch point of acquisition by connector 206.
Preferably, above-mentioned touch control display apparatus also comprises respectively and being electrically connected with sequential control integrated circuit 204, touch-control integrated circuit 201, grid-driving integrated circuit 202 and source electrode driven integrated circuit 203, is used to each integrated circuit that the supply convertor of operating voltage is provided.
Further describe touch control display apparatus in the present embodiment below by principle of work of the present invention.
Referring to Fig. 3, be the drive system block diagram of OLED touch control display apparatus in the embodiment of the invention.When connector 205 received image signals and control signal, sequential control integrated circuit 204 is converted into picture signal the driving signal of " level " (OK) and " vertical " (row), wherein horizontal-drive signal is to order about the up and down dfisplacement pulse of scanning, and it is the Pixel Information of projected images content that row drive signal; Simultaneously, sequential control integrated circuit 204 generates the first steering order and the second steering order to control signal, then horizontal-drive signal is sent to grid-driving integrated circuit 202, row is driven signal send to source electrode driven integrated circuit 203.When the second steering order arrives, be enabling signal STV and the movable signal CPV that sequential control integration circuit 204 has generated grid-driving integrated circuit 202, and when the commencing signal STH of the capable data of source electrode driven integrated circuit 203 and clock signal C PH, the delegation that grid-driving integrated circuit 202 is opened drive electrode by horizontal-drive signal (displacement pulse signals), source electrode driven integrated circuit 203 drives signal by row and opens data electrode, the data of this row are downloaded to corresponding R(red, red), G(green, green), B(blue, blueness) on the light-emitting component of three kinds of colors, these data are the voltage signal of control OLED brightness, this voltage signal is used for controlling the size of current that flows through OLED, thereby realizes that OLED shows different brightness.Under the control of sequential control integrated circuit 204, be added to horizontal driving pulse one by one on the drive electrode, drive electrode from top to bottom, which drive electrode pulse is added to, the row at this drive electrode place just shows the Pixel Information of delegation simultaneously, horizontal driving pulse mobile one-period from top to bottom namely shows a field picture like this.
As shown in Figure 4, when the second steering order arrives, at T1 ~ T3 in the time period, grid-driving integrated circuit 202 output horizontal-drive signal 1(pulse drive signals) scanning article one drive electrode, source electrode driven integrated circuit 203 downloads to the data of this row on corresponding R, G, the B light-emitting component, the Pixel Information that shows this row, grid-driving integrated circuit 202 scans each row successively, thereby finishes the demonstration of whole frame picture.The sequential of grid-driving integrated circuit 202 each row drive electrode of scanning is by 204 controls of sequential control integrated circuit, the scanning different rows is free interval, be after the first row scanning is finished and before opening scanning the second row certain time interval to be arranged, the present invention utilizes this time interval exactly, after the scanning the first row is finished, sequential control integrated circuit 204 sends the first steering order, when the first steering order arrives, when being the OE1 signal arrival of sequential control integration circuit 204 generations, this row drive electrode and descending drive electrode are not opened, as shown in Figure 4, that is to say, grid-driving integrated circuit 202 and source electrode driven integrated circuit 203 are not opened when the OE1 signal arrives, idle on the drive electrode of the array circuit 101 in the oled panel 100 this moment and the data electrode namely, control touch-control integrated circuit 201 scans respectively drive electrode and the data electrode that is connected to, thereby draws the positional information of the touch point on oled panel 100, realizes touch controllable function.
Particularly, because array circuit 101 is arranged in the oled panel 100, and array circuit 101 comprises: a plurality of transversely arranged drive electrodes and the data electrode of a plurality of longitudinal arrangements, place in drive electrode and data electrode intersection will form electric capacity, touch-control integrated circuit 201 is connected with the drive electrode of choosing, and these drive electrodes are realized the drive wire Tx of touch controllable function as oled panel 100; Touch-control integrated circuit 201 is connected with the data electrode of choosing, these data electrodes are realized the reception line Rx of touch controllable function as oled panel 100, sequential control integrated circuit 204 will send the first steering order and the second steering order at every interval certain hour, and the first steering order and the second steering order do not occur simultaneously, when the second steering order arrives, grid-driving integrated circuit 202 and source electrode driven integrated circuit 203 are opened, and the driving OLED panel is finished image demonstration work.When the first steering order arrived, when namely the OE1 signal arrived, grid-driving integrated circuit 202 and source electrode driven integrated circuit 203 just can not opened, and touch-control integrated circuit 201 will be opened, and scans line by line selected drive wire Tx and receives line Rx.That is to say, when touching oled panel 100, the electric capacity of position, touch point will change, when OE1 arrives, after touch-control integrated circuit 201 receives this OE1 signal, by scanning motion line by line, just can obtain the positional information of touch point, and then realize the touch controllable function of oled panel.Therefore, in the present embodiment, oled panel 100 had both had the effect that shows image, had again the effect of contact panel.
Based on technique scheme as can be known, compared with prior art, this touch control display apparatus need not at the oled panel capacitance touching control panel of fitting, thereby improves the transmittance of touch control display apparatus, and then has improved the picture disply quality of touch control display apparatus; In addition, the present invention has saved the attaching process step, improves the yield of touch control display apparatus, can effectively save cost.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (4)
1. a touch control display apparatus is characterized in that, comprising: Organic Light Emitting Diode oled panel and the flexible circuit board COF that is fixed on the described oled panel with array circuit; Wherein,
Described array circuit comprises: a plurality of transversely arranged drive electrodes and the data electrode of a plurality of longitudinal arrangements;
Described COF comprises: the grid-driving integrated circuit that is connected with described a plurality of drive electrode signals, the source electrode driven integrated circuit that is connected with described a plurality of data electrode signals, respectively with at least one described drive electrode be connected the touch-control integrated circuit that described data electrode signal is connected, the sequential control integrated circuit that is connected with described touch-control integrated circuit, grid-driving integrated circuit and source electrode driven integrated circuit signal respectively.
2. touch control display apparatus as claimed in claim 1 is characterized in that, also comprises: respectively with described sequential control integrated circuit be connected the touch-control integrated circuit signal and be connected, be used for the connector of image signal transmission and control signal.
3. touch control display apparatus as claimed in claim 1 is characterized in that, described sequential control integrated circuit comprises: be used for generating the time schedule controller of scanning sequence, be connected, be used for storing the storer of described scanning sequence with described time schedule controller signal.
4. such as the described arbitrary touch control display apparatus of claim 1-3, it is characterized in that, also comprise respectively being electrically connected with described sequential control integrated circuit, touch-control integrated circuit, grid-driving integrated circuit and source electrode driven integrated circuit, be used to each integrated circuit that the supply convertor of operating voltage is provided.
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