CN102262472A - Touch interferometric modulation display (IMOD) - Google Patents
Touch interferometric modulation display (IMOD) Download PDFInfo
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- CN102262472A CN102262472A CN2010101927401A CN201010192740A CN102262472A CN 102262472 A CN102262472 A CN 102262472A CN 2010101927401 A CN2010101927401 A CN 2010101927401A CN 201010192740 A CN201010192740 A CN 201010192740A CN 102262472 A CN102262472 A CN 102262472A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/3466—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on interferometric effect
Abstract
The invention relates to an interferometric modulation display (IMOD) and a touch screen, in particular to a touch IMOD. The invention adopts the technical scheme that: the existing display screen electrode wire on an IMOD screen also serves as a touch sensing electrode wire; and a touch signal is applied to the display screen electrode wire to avoid influence on a display driving voltage, so the IMOD additionally has a quite important touch function under the condition of no loss of the display characteristic of the IMOD. For a reflective display such as the IMOD, a reflecting surface of a resistive or capacitive touch screen is not required to be arranged in front of the display screen, and an electromagnetic touch screen is not required to be arranged behind the display, so that the touch IMOD which integrates the display screen and the touch screen is realized.
Description
Technical field
The present invention relates to interference modulations display and touch screen, relate in particular to touch interference modulations display.
Background technology
The touch screen development has been widely used in various fields such as personal computer, smart phone, public information, intelligent appliance, Industry Control so far.In present touch-control field, mainly contain resistance type touch control screen, photo-electric touch screen, ultrasonic type touch screen, flat capacitance type touch screen, projected capacitive touch screen development in recent years is rapidly.But these touch screens all have technical disadvantages separately at present, though cause them widely to adopt at some special occasions, are difficult to apply on the common display screen.
Display screen and touch screen are to twin product, and in the prior art, display screen and touch screen are independently born separately and shown and the touch-control task usually.The flat-panel monitor with touch controllable function of present this discrete constitutes with parts such as display screen, display driver, touch screen, touching signals detecting device, backlights, touch screen has resistance-type, condenser type, electromagnetic type, ultrasonic type and the photo-electric etc. of using different sensing principles, and display screen has passive LCDs (TN/STN-LCD), active matrix liquid crystal display panel (TFT-LCD), organic light-emitting diode (OLED) display screen (OLED, AM-OLED), plasma display panel (PDP) (PDP), CNT display screen, Electronic Paper (e-Paper) etc.The flat-panel monitor that has touch screen is that the touch screen of split and display screen is stacked together, detects the planimetric position of touch point by touch screen, makes the cursor on the display screen follow the location, touch point again.The stacked touch control type flat-panel display thickening that makes of touch screen and display screen becomes heavy cost increase; When touch screen placed the display screen front, the reflection that the touch screen sensing electrode produces can make that again demonstration is inhomogeneous and show decrease of contrast under strong ambient light environment, influences display effect.Trackpad and display screen being become one, make the flat-panel monitor with touch controllable function become more frivolous, is the direction that people make great efforts.
Find out a kind of scheme that solves above-mentioned complex structure problem, improve the flat-panel monitor with touch controllable function reliability, improve display effect, compressed thickness, reduce cost, realize that with succinct method the flat-panel monitor touch controllable function is necessary.
Application number is 2006100948141, name is called the Chinese invention patent instructions that " touch control type flat-panel display " and application number are 2006101065583, are called " flat-panel monitor with touch controllable function ", disclosed the connected mode between a kind of touch-control detection circuit and the display screen electrode respectively, make both transmitting and displaying drive signals of display screen electrode by analog switch or loaded circuit, transmit again and the sensing touching signals, display driver and touch-control are surveyed time division multiplex or shared display screen electrode of while, and the display screen electrode not only is used for display driver but also be used for the touch-control detection; Application number is that 200810133417X, name are called the Chinese invention patent instructions of " a kind of touch control type flat-panel display ", further disclosed the method that the touching signals of touch control type flat-panel display applies and detects, avoid crosstalking of touching signals, improve detection speed; Application number is 2009102035358, name is called the Chinese invention patent instructions of " a kind of driving of touch control type flat-panel display realizes ", application number is 2009101399060, name is called the Chinese invention patent instructions of " a kind of driving of touch control type flat-panel display realizes ", then again touch control type flat-panel display has been made and further having been improved and refinement; Application number is 2009202193272, name is called the Chinese utility model patent instructions of " a kind of touch-control circuit ", has further disclosed the structure of touch-control circuit; Application number is 2009202055056, name is called the Chinese utility model patent instructions of " a kind of touch control type flat-panel display ", has then disclosed the sequential that applies and detect of touch control type flat-panel display touching signals.This a series of patent has proposed the method and the embodiment of " touch control type flat-panel display " innovatively.
The basic functional principle of this class touch control type flat-panel display that above-mentioned Chinese patent disclosed is, the electrode that utilizes two sets intersect on the display screen is as the touch-control sensing electrode, each strip electrode line of electrode group connects the touch-control driving source, and the touch-control driving source applies the touch-control pumping signal to electrode wires.When people's finger or other touch control objects came close to or in contact with certain strip electrode line, touch-control circuit was by surveying the size that each strip electrode line touching signals changes, thereby found out finger or the position of other touch control objects on display screen.This is a kind of brand-new display screen and the touch-control Detection Techniques of touch screen two-in-one formula, has significant cost advantage and vast potential for future development.
A kind of as flat-panel monitor, interference modulations display (InterferometricModulation Display, IMOD) be the physical interference effect of utilization, only need to consume a little electric weight and just can produce beautiful color, and also can be high-visible under burning sun.The elementary cell of IMOD display is the micro-structure that two minute surfaces clip a space, the color that is reflected during this space decision irradiate light display.
IMOD display and present LCD (Liquid Crystal Display, LCD) manufacturing technology compatibility, its photoelectric characteristic allows it can save the complicated flow process of making TFT thin film transistor monitor again, also need not such as limiting elements such as luminous colored filter of LCD and polaroid.Because the IMOD display is a kind of reflection modulation display of light, it has good, the wide visual angle of the visuality high light environment under, high reflectance, bistable state memory function, plurality of advantages such as low in energy consumption, allows it have unlimited prospect in portable demonstration field.
In portable demonstration field, often there is not more space to be used for input equipments such as keyboard and mouse on the device.Traditional touch screen, no matter be resistance-type or capacitive, touch screen all is to be arranged at before the display; For the such reflective display of IMOD,, will have a strong impact on its display effect if there is reflecting surface to place before the display screen again.Though the electromagnetic touch-control screen is to be arranged at after the display, but the reflection horizon of the reflective conductive diaphragm of IMOD display picture element is metal level often again, metal level can produce serious obstruction to the transmission of electromagnetic touch-control screen touching signals, influences the operate as normal of electromagnetic touch-control screen; In addition, the cost of electromagnetic touch-control screen also is very expensive.
The present invention be directed to the interference modulations display, the electrode wires that proposes to utilize two sets intersect on the interference modulations display screen realizes the touch interference modulations display of interference modulations display screen and touch screen two-in-one as touch-control sensing electrode line.
Summary of the invention
The present invention is exactly in order directly to realize touch controllable function at the interference modulations display, with interference modulations display screen and touch screen two-in-one, and the touching signals feature of a kind of touch interference modulations display of proposition, and touching signals applies and detects the scheme of sequential.
Technical matters of the present invention is solved by following technical scheme:
A kind of touch interference modulations display comprises interference modulations display screen and driving circuit; The substrate of display screen is provided with the column electrode group that is no less than two groups of m bar row electrode lines, row electrode group and m * n display pixel of n bar row electrode wires, column electrode group and row electrode group are connected a slice in each display pixel two plate electrode respectively, the ranks two arrays of electrodes asks that electrode wires intersects mutually, each strip electrode line mutually disjoints on the same group, and wherein m, n are the natural numbers greater than 2; Driving circuit includes display driver circuit, and display driver circuit applies display drive signals to the two arrays of electrodes line, drives the show state that each pixel is in setting; Also include touch-control circuit in the driving circuit, described touch-control circuit has touch-control driving source and touching signals testing circuit; In display screen is in the section sometime of show state, driving circuit is superimposed with the touching signals of the Alternating Component of touch-control driving source generation on display drive signals, and be applied on row electrode lines and the row electrode wires, and the voltage difference that gives way between each electrode wires and row electrode wires is in the display driver range of voltage values of display screen show state of living in display screen electrode wires while transmitting and displaying drive signal and touching signals; The variation of touching signals on touching signals testing circuit while in the touch-control circuit or the timesharing detecting electrode line, whether survey each electrode wires touched; Display driver and touch-control are surveyed multiplexing display screen electrode wires simultaneously.
Technical matters of the present invention is further solved by following technical scheme:
According to another concrete aspect of the present invention, driving circuit is at least one row electrode lines of described interference modulations display screen and many row electrode wires, or at least one row electrode wires and many row electrode lines apply the display drive signals of stack touching signals simultaneously.
According to another concrete aspect of the present invention, driving circuit is the display drive signals that simultaneously all row electrode lines of described interference modulations display screen and all row electrode wires is applied simultaneously the stack touching signals.
According to another concrete aspect of the present invention, the described touching signals that on the display drive signals of touching signals that superposes on the display drive signals of row electrode lines and row electrode wires, superposes, be same frequency, same-phase and etc. the AC signal of amplitude.
According to another concrete aspect of the present invention, described touching signals testing circuit changes touching signals on the display screen electrode wires and detects, and is that all electrode wires or the partial electrode line to display screen detects.
According to another concrete aspect of the present invention, described touching signals testing circuit detects touching signals variation on the partial electrode line of display screen, is display screen to be had the electrode wires that can operate the display element position detect.
According to another concrete aspect of the present invention, it is described in display screen is in the section sometime of show state, be meant that display screen is in the section sometime that keeps driving in the period, section at this moment, the display drive signals of stack touching signals is applied on row electrode lines and the row electrode wires, and allows the voltage difference between all row electrode lines and all row electrode wires be in the scope of sustaining voltage value.
According to another concrete aspect of the present invention, described being at display screen keep to drive in the period, and the display drive signals of the touching signals that will superpose that carries out is applied on the electrode wires, and the variation of touching signals on the detecting electrode line; Can be to keep driving in the period each time all carrying out, also can not be to keep driving in the period each time all carrying out; In the maintenance of carrying out the touching signals change-detection drives the period, can be to carry out one-time detection, also can be to carry out repeated detection.
According to another concrete aspect of the present invention, it is described in display screen is in the section sometime of show state, be meant that display screen is in addressing and drives interior section sometime of period, section at this moment, the display drive signals of stack touching signals is applied on row electrode lines and the row electrode wires, and allowing display-object is the display pixel of open state on the row electrode lines that is addressed to, the voltage difference between row electrode lines and row electrode wires is in the scope of open state magnitude of voltage; Allow display-object is the display pixel of collapsed mode on the row electrode lines that is addressed to, the voltage difference between row electrode lines and row electrode wires is in the scope of collapsed mode magnitude of voltage; So allow the row electrode lines that is not addressed to and the voltage difference between the row electrode wires be in the scope of sustaining voltage value.
According to another concrete aspect of the present invention, describedly be in addressing at display screen and drive in the period, the display drive signals of the touching signals that will superpose that carries out is applied on the electrode wires, and the variation of touching signals on the detecting electrode line; Can be all to carry out in addressing each time drives the period, also can not be all to carry out in addressing each time drives the period; In the addressing of carrying out the touching signals change-detection drives the period, can be to carry out one-time detection, also can be to carry out repeated detection.
The beneficial effect that the present invention is compared with the prior art is:
Disclosed technical scheme, be to propose to utilize show electrode line existing on the interference modulations display screen also as touch-control sensing electrode line, the display screen electrode wires is applied touching signals avoid influencing display driver voltage again, make the interference modulations display not losing fully under the situation of its display characteristic, increased crucial touch controllable function again.Allow the such reflective display of IMOD, neither need again the reflecting surface of resistance or capacitance type touch control screen to be arranged on before the display screen, do not need the electromagnetic touch-control screen to be arranged on after the display yet, realize the touch interference modulations display of display screen and touch screen two-in-one.
Because do not need especially touch screen and touch-control drive IC, touch interference modulations display also has advantage very on cost.
Description of drawings
Fig. 1 is the synoptic diagram that is electrically connected of the specific embodiment of the invention one, two, three, four;
Fig. 2 a is that the specific embodiment of the invention one keeps driving the drive waveforms figure during the period is not carried out the touch-control detection;
Fig. 2 b is that the specific embodiment of the invention one keeps driving the drive waveforms figure during the period is carried out the touch-control detection;
Fig. 3 is the work schedule distribution diagram of the specific embodiment of the invention one;
Fig. 4 is the work schedule distribution diagram of the specific embodiment of the invention two;
Fig. 5 is the work schedule distribution diagram of the specific embodiment of the invention three;
Fig. 6 is the drive waveforms figure that the specific embodiment of the invention four addressing drive the period;
Fig. 7 and 8 is two kinds of work schedule distribution diagrams of the specific embodiment of the invention four.
Embodiment
The interference modulations display is a kind of microelectromechanical-systems (Micro-Electro-MechanicalSystem, MEMS), the glass substrate that the basic structure of display pixel is covered by film, has the layer of transparent conductive electrode on the substrate, have the reflective conductive diaphragm of one deck (Reflective membrance) and cover on the substrate, isolate by air gap (Air gap) between this layer barrier film and glass substrate.In the opening (Open State) of not switching on, pixel becomes clear, and incident ray produces color because of interfering between reflective barrier film and glass substrate air gap; To electrode on the glass substrate and the electrode application voltage on the barrier film, barrier film is electrostatically attracted to (collapsed mode, Collapsed State) on glass, and when the air gap thickness between barrier film and glass substrate reduced to form the segregation attitude, the interference of light caused the pixel blackening.
The speed that MEMS drives is fast, allows display pixel switch show state in about 10 μ s, has eliminated many other flat-panel monitors because switch speed is slower, and the problem of image blurring that causes.
The driving of MEMS is by linear mechanical power and non-linear electrostatic force and the effect of surface adsorption equilibrium of forces and produce, the difference of mechanical force and electrostatic force, add the existence of surface adsorption power, make the driving of IMOD display picture element have hesitation, cause the bistable state behavior that shows, also can see the memory function of pixel as.Therefore, the IMOD display keeps the driving power of image stabilization extremely low for a long time.
Because the bistable characteristic of IMOD display, display can be in Passive Mode (Passive) addressing driving down.The driving process of IMOD display can be divided into two periods, and one is that addressing drives the period, and one is to keep driving the period.Drive the period in addressing, driving circuit applies sweep signal to row electrode lines line by line, simultaneously apply data-signal to each row electrode wires with scan-synchronized, allow voltage difference between the ranks electrode wires be in the display pixel of open state voltage (Open State Voltage), start to open state from collapsed mode; Allow voltage difference between the ranks electrode wires be in the display pixel of collapsed mode voltage (CollapsedState Voltage), discharge back collapsed mode from open state; Allow voltage difference between the ranks electrode wires be in the display pixel of sustaining voltage (Hold Voltage), residing or open state or collapsed mode before remaining on; Keeping driving the period, the signal that driving circuit applies to row electrode lines and row electrode wires, allow the voltage difference between all row electrode lines and all row electrode wires be in sustaining voltage (Hold Voltage), residing or open state or collapsed mode before all display pixels all remain on.
Embodiment one
Touch interference modulations display 100 as shown in Figure 1 comprises interference modulations display screen 110, driving circuit 120.Driving circuit 120 comprises display driver circuit 130, touch-control circuit 140, demonstration/touching signals loaded circuit 150 and control circuit 160 etc.; Described touch-control circuit 140 has touch-control driving source 141 and touching signals testing circuit 142.Display screen 110 have m bar row electrode lines 1111,112 ..., 111i ..., 111m column electrode group 111, n bar row electrode wires 1121,1122 ..., 112j ..., 112n row electrode group 112 and m * n display pixel, column electrode group and row electrode group are connected a slice in each display pixel two plate electrode respectively, electrode wires is intersected mutually between the ranks two arrays of electrodes, each strip electrode line mutually disjoints on the same group, and wherein m, n are the natural numbers greater than 2.
Display driver circuit 130 all is connected demonstration/touching signals loaded circuit 150 with touch-control circuit 140, the output terminal of demonstration/touching signals loaded circuit 150 connects the column electrode group 111 and the row electrode group 112 of display screen 110, and display driver circuit 130, touch-control circuit 140 and demonstration/touching signals loaded circuit 150 all interconnect with control circuit 160.Demonstration/touching signals loaded circuit 150 can directly be exported to shows signal display screen 110 under the control of control circuit 160; Also can on display drive signals, be superimposed with the touching signals of the Alternating Component of touch-control driving source 141 generations, export to display screen 110.Each bar connecting line among Fig. 1 has more than and represents single line to connect, and also represents multi-thread annexation.
Touch interference modulations display 100 is worked as follows:
Be in addressing at display 100 and drive the period (S period), demonstration in the driving circuit 120/touching signals loaded circuit 150, under the control of control circuit 160, the simple display drive signals of any other signal that do not superpose that display driver circuit 130 is produced, mode with the scanning addressing, apply sweep signal to row electrode lines line by line, simultaneously apply data-signal to each row electrode wires with scan-synchronized, allow voltage difference between the ranks electrode wires be in the display pixel of open state voltage, start to open state from collapsed mode; Allow voltage difference between the ranks electrode wires be in the display pixel of collapsed mode voltage, discharge back collapsed mode from open state; Allow voltage difference between the ranks electrode wires be in the display pixel of sustaining voltage, residing or open state or collapsed mode before remaining on; M * n display pixel is in the show state of its setting respectively according to display drive signals.Have at the capable j row of i place on the display screen 110 and can operate display element.
Be in maintenance at display 100 and drive the period, at first enter and show the maintenance period (H period), demonstration/touching signals loaded circuit 150, under the control of control circuit 160, the simple maintenance of any other signal that do not superpose that display driver circuit 130 is produced drives the attitude display drive signals, export to each row electrode lines and row electrode wires, allow the voltage difference between all row electrode lines and all row electrode wires be in sustaining voltage, residing or open state or collapsed mode before all display pixels all remain on, keep to drive the period do not carry out during touch-control is surveyed drive waveforms figure as shown in Figure 2; And then enter demonstration maintenance and touch-control detection period (H+T period), demonstration in the driving circuit 120/touching signals loaded circuit 150, under the control of control circuit 160, with the interchange touching signals that touch-control driving source 141 produces, be superimposed upon the maintenance that display driver circuit 130 produced and drive on the attitude display drive signals; Allow interchange touching signals composition on demonstration/touching signals loaded circuit 150 each output terminal be in state, export to all row electrode lines and all row electrode wires, display screen electrode wires while transmitting and displaying drive signal and touching signals with frequency, homophase, constant amplitude; Because the interchange touching signals composition on demonstration/touching signals loaded circuit 150 each output terminal is in the state with frequency, homophase, constant amplitude, each row-column electrode voltage between lines difference still is in the sustaining voltage value, residing or open state or collapsed mode before all display pixels all still remain on; Simultaneously, 142 pairs of display screens of touching signals testing circuit in the touch-control circuit 140 110 carry out touch-control and survey, touching signals testing circuit 142 with simultaneously or timesharing detect the variation of touching signals on each electrode wires, survey the whether touched and touched position of each electrode wires; Finish to return again after touch-control is surveyed and show the maintenance period (H period), demonstration/touching signals loaded circuit 150, under the control of control circuit 160, the simple maintenance that turns back to any other signal that do not superpose that display driver circuit 130 is produced again drives the attitude display drive signals, export to each row electrode lines and row electrode wires, allow the voltage difference between all row electrode lines and all row electrode wires be in sustaining voltage, residing or open state or collapsed mode before all display pixels all remain on.Drive the period in whole maintenance, all display pixels all be remain on previous addressing drive due to the period or open state or collapsed mode, go back to next addressing again until display 100 and drive the period.Keep driving the period does not carry out drive waveforms figure during touch-control is surveyed shown in Fig. 2 a, carries out drive waveforms figure during touch-control is surveyed shown in Fig. 2 b.
When touch interference modulations display 100 repeatedly when addressing drives the period and keeps driving during intersegmental conversion, display driver and touch-control are surveyed with regard to multiplexing display screen electrode wires, but formation not only can show but also the touch interference modulations display of touch-control.Its work schedule distribution diagram as shown in Figure 3.
Judge the condition of the polar curve that gets an electric shock, can detect the touching signals of flowing through change maximum, and the electrode wires that surpasses certain setting threshold be the polar curve that gets an electric shock; Can be not yet with detect the touching signals of flowing through change maximum, and the electrode wires that surpasses certain setting threshold be the polar curve that gets an electric shock, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch interference modulations display 100 allow the while multi-point touch.
Embodiment two
The electrical structure of present embodiment is all identical with " embodiment one " with electrical specification.
When touch interference modulations display 100 is that display 100 each frame displaying contents all can remain unchanged for a long time when being used on the reader device of e-book (e-Book) class.At this moment, can in the maintenance driving period that displaying contents remains unchanged each time, carry out repeatedly touch-control and survey; Promptly keeping driving in the period each time, be provided with and repeatedly show maintenance and the touch-control detection period (H+T period), driving circuit will be superimposed with the maintenance that exchanges touching signals for more than 120 time and drive the attitude display drive signals, impose on all row electrode lines and all row electrode wires; Applying in the time period that is superimposed with the maintenance driving attitude display drive signals that exchanges touching signals at every turn, touch-control circuit 140 all carries out touch-control to display screen 110 and surveys, whether touched and touched touching signals testing circuit 142 detects the variation of touching signals on each electrode wires, survey each electrode wires position.Its work schedule distribution diagram as shown in Figure 4.
Embodiment three
The electrical structure of present embodiment is all identical with " embodiment one " with electrical specification.
When touch interference modulations display 100 is when being used for quick animation patterns and showing, display 100 each frame displaying contents are changed fast.At this moment, can be after addressing each time drives the period, only carry out once will being superimposed with the maintenance that exchanges touching signals and drive the attitude display drive signals, impose on all row electrode lines and all row electrode wires, in this shows maintenance and touch-control detection period (H+T period), whether touched and touched 140 pairs of display screens of touch-control circuit 110 carry out touch-control to be surveyed, and touching signals testing circuit 142 detects the variation of touching signals on each electrode wires, survey each electrode wires position.Its work schedule distribution diagram as shown in Figure 5.
Because operator's finger has certain thickness, carry out the touch-control detection time in order further to shorten, when carrying out the touch-control detection, whether touched and touched touching signals testing circuit 142 is that the detection that touching signals changes is carried out in row electrode lines and row electrode wires compartment of terrain, survey each electrode wires position; Described the detection that touching signals changes being carried out in the electrode wires compartment of terrain, can be each strip electrode line at interval, also can be each many strip electrodes line at interval, also can be one-time detection odd electrode line, one-time detection even electrode line.
Embodiment four
The electrical structure of present embodiment is all identical with " embodiment one " with electrical specification.
Touch interference modulations display 100 is worked as follows:
Be in addressing at display 100 and drive the period, demonstration in the driving circuit 120/touching signals loaded circuit 150, under the control of control circuit 160,, be superimposed upon the addressing that display driver circuit 130 produced and drive on the attitude display drive signals the interchange touching signals that touch-control driving source 141 produces; Allow interchange touching signals composition on demonstration/touching signals loaded circuit 150 each output terminal be in state, export to each row electrode lines and Ge Lie electrode wires, display screen electrode wires while transmitting and displaying drive signal and touching signals with frequency, homophase, constant amplitude; Display drive signals applies sweep signal to row electrode lines line by line in the mode of scanning addressing, applies data-signal with scan-synchronized to each row electrode wires simultaneously; Because the interchange touching signals composition on demonstration/touching signals loaded circuit 150 each output terminal is in the state with frequency, homophase, constant amplitude, each row-column electrode voltage between lines difference still is under the normal display addressing driving voltage value, allow voltage difference between the ranks electrode wires be in the display pixel of open state voltage, start to open state from collapsed mode; Allow voltage difference between the ranks electrode wires be in the display pixel of collapsed mode voltage, discharge back collapsed mode from open state; Allow voltage difference between the ranks electrode wires be in the display pixel of sustaining voltage, residing or open state or collapsed mode before remaining on; M * n display pixel is in the show state of its setting respectively according to display drive signals.Only have on the display screen 110 and can operate display element at the capable j row of i place.
During addressing drives, touching signals testing circuit 142 in the touch-control circuit 140, carry out the touch-control detection to having the capable j row of the i that can operate display element place on the display screen 110, touching signals testing circuit 142 is in the mode of while or timesharing, whether only detect near the row electrode lines of i capable and the variation of touching signals near the row electrode wires the j row, it is touched to survey the electrode wires that can operate on the display element at the capable j row of i place.The addressing driving period just becomes the addressing driving and touch-control is surveyed the period (S+T period), and its drive waveforms figure as shown in Figure 6.
Be in maintenance at display 100 and drive the period, be exactly to show to keep the period (H period), demonstration/touching signals loaded circuit 150, under the control of control circuit 160, the simple maintenance attitude display drive signals of any other signal that do not superpose that display driver circuit 130 is produced, export to each row electrode lines and row electrode wires, allow the voltage difference between all row electrode lines and all row electrode wires be in sustaining voltage, residing or open state or collapsed mode before all display pixels all remain on.
When touch interference modulations display 100 repeatedly when addressing driving and touch-control are surveyed the period and are kept driving during intersegmental conversion, display driver and touch-control are surveyed with regard to multiplexing display screen electrode wires, but formation not only can show but also the touch interference modulations display of touch-control.Its work schedule distribution diagram as shown in Figure 7.
When touch interference modulations display 100 is when being used for pattern displaying that film, TV etc. change at a high speed, display 100 each frame displaying contents are all changed, display 100 may not keep period of driving fully, but still can carry out touch control operation by present embodiment.Its work schedule distribution diagram as shown in Figure 8.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a touch interference modulations display comprises interference modulations display screen and driving circuit; The substrate of display screen is provided with the column electrode group that is no less than two groups of m bar row electrode lines, row electrode group and m * n display pixel of n bar row electrode wires, column electrode group and row electrode group are connected a slice in each display pixel two plate electrode respectively, electrode wires is intersected mutually between the ranks two arrays of electrodes, each strip electrode line mutually disjoints on the same group, and wherein m, n are the natural numbers greater than 2; Driving circuit includes display driver circuit, and display driver circuit applies display drive signals to the two arrays of electrodes line, drives the show state that each pixel is in setting; It is characterized in that:
Also include touch-control circuit in the driving circuit, described touch-control circuit has touch-control driving source and touching signals testing circuit; In display screen is in the section sometime of show state, driving circuit is superimposed with the touching signals of the Alternating Component of touch-control driving source generation on display drive signals, and be applied on row electrode lines and the row electrode wires, and the voltage difference that gives way between each electrode wires and row electrode wires is in the display driver range of voltage values of display screen show state of living in display screen electrode wires while transmitting and displaying drive signal and touching signals; The variation of touching signals on touching signals testing circuit while in the touch-control circuit or the timesharing detecting electrode line, whether survey each electrode wires touched; Display driver and touch-control are surveyed multiplexing display screen electrode wires simultaneously.
2. touch interference modulations display according to claim 1 is characterized in that:
Driving circuit is at least one row electrode lines of described interference modulations display screen and many row electrode wires, or at least one row electrode wires and many row electrode lines apply the display drive signals of stack touching signals simultaneously.
3. touch interference modulations display according to claim 1 is characterized in that:
Driving circuit is the display drive signals that simultaneously all row electrode lines of described interference modulations display screen and all row electrode wires is applied simultaneously the stack touching signals.
4. according to claim 1 or 2 or 3 described touch interference modulations displays, it is characterized in that:
The described touching signals that on the display drive signals of touching signals that superposes on the display drive signals of row electrode lines and row electrode wires, superposes, be same frequency, same-phase and etc. the AC signal of amplitude.
5. touch interference modulations display according to claim 1 is characterized in that:
Described touching signals testing circuit changes touching signals on the display screen electrode wires and detects, and is that all electrode wires or the partial electrode line to display screen detects.
6. touch interference modulations display according to claim 5 is characterized in that:
Described touching signals testing circuit detects touching signals variation on the partial electrode line of display screen, is display screen to be had the electrode wires that can operate the display element position detect.
7. touch interference modulations display according to claim 1 is characterized in that:
It is described in display screen is in the section sometime of show state, be meant that display screen is in the section sometime that keeps driving in the period, section at this moment, the display drive signals of stack touching signals is applied on row electrode lines and the row electrode wires, and allows the voltage difference between all row electrode lines and all row electrode wires be in the scope of sustaining voltage value.
8. according to claim 1 and 7 described touch interference modulations displays, it is characterized in that:
Described being at display screen keep to drive in the period, and the display drive signals of the touching signals that will superpose that carries out is applied on the electrode wires, and the variation of touching signals on the detecting electrode line; Can be to keep driving in the period each time all carrying out, also can not be to keep driving in the period each time all carrying out; In the maintenance of carrying out the touching signals change-detection drives the period, can be to carry out one-time detection, also can be to carry out repeated detection.
9. touch interference modulations display according to claim 1 is characterized in that:
It is described in display screen is in the section sometime of show state, be meant that display screen is in addressing and drives interior section sometime of period, section at this moment, the display drive signals of stack touching signals is applied on row electrode lines and the row electrode wires, and allowing display-object is the display pixel of open state on the row electrode lines that is addressed to, the voltage difference between row electrode lines and row electrode wires is in the scope of open state magnitude of voltage; Allow display-object is the display pixel of collapsed mode on the row electrode lines that is addressed to, the voltage difference between row electrode lines and row electrode wires is in the scope of collapsed mode magnitude of voltage; So allow the row electrode lines that is not addressed to and the voltage difference between the row electrode wires be in the scope of sustaining voltage value.
10. according to claim 1 and 9 described touch interference modulations displays, it is characterized in that:
Describedly be in addressing at display screen and drive in the period, the display drive signals of the touching signals that will superpose that carries out is applied on the electrode wires, and the variation of touching signals on the detecting electrode line; Can be all to carry out in addressing each time drives the period, also can not be all to carry out in addressing each time drives the period; In the addressing of carrying out the touching signals change-detection drives the period, can be to carry out one-time detection, also can be to carry out repeated detection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101927401A CN102262472A (en) | 2010-05-27 | 2010-05-27 | Touch interferometric modulation display (IMOD) |
| PCT/CN2011/070156 WO2011147200A1 (en) | 2010-05-27 | 2011-01-10 | Touch-control interferometric modulation display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101927401A CN102262472A (en) | 2010-05-27 | 2010-05-27 | Touch interferometric modulation display (IMOD) |
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| Publication Number | Publication Date |
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| CN102262472A true CN102262472A (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101927401A Pending CN102262472A (en) | 2010-05-27 | 2010-05-27 | Touch interferometric modulation display (IMOD) |
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| Country | Link |
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| WO (1) | WO2011147200A1 (en) |
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| Publication number | Publication date |
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| WO2011147200A1 (en) | 2011-12-01 |
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