TW201314566A - Driving method of visual interface system - Google Patents

Abstract

A driving method of a visual interface system is disclosed in the invention. The visual interface system includes an operation apparatus and a matrix display apparatus having a display surface and a matrix substrate. The matrix substrate has a substrate and a matrix disposed at a side of the substrate while the display surface is located at the other side of the substrate. The driving method includes steps of transmitting a plurality of encoded signals and a plurality of display signals to the matrix substrate by the matrix display apparatus; and receiving at least one of the encoded signals through the operation on the display side by the operation apparatus.

Description

Driving method of visual interface system

The present invention relates to a driving method, and more particularly to a driving method of a visual interface system.

In recent years, touch panels have been widely used in general consumer electronic products, such as mobile communication devices, digital cameras, digital music players (MP3), personal digital assistants (PDAs), satellite navigation devices (GPS), A hand-held PC, even a brand new Ultra Mobile PC (UMPC) and a television, etc., are all combined with a display screen to become a touch display device. In other words, the conventional touch display device directly sets a touch panel on the display panel in a display module. However, this not only increases the weight and size of the product, but also increases the touch panel to cause the touch mode. The cost of the group increases.

On the other hand, in order to increase the application level of consumer electronics products, the function of Near Field Communication (NFC, or Near Field Communication) has also begun to be added to these products. It can provide information exchange between two electronic devices, such as music, pictures, business cards, etc., in the case of replacing IC cards with a large number of occasions such as access control, tickets, tickets, and credit card payments. Under the added function, how to maintain a simple structure and get a product in the form of non-stacked house, also attracts many people's input.

Therefore, how to provide a driving method of the visual interface system can realize the function of display and touch without using the visual interface system of another touch panel, thereby making the product thin and light, reducing the cost, and combining short-distance wireless communication. The application of the application to expand the application level is indeed one of the current important topics.

In view of the above problems, an object of the present invention is to provide a driving method capable of a visual interface system that does not require the use of another touch panel, thereby achieving the function of display and communication of the visual interface system, thereby making the product light and thin. And reduce costs.

To achieve the above object, the present invention discloses a driving method of a visual interface system. The visual interface system includes an operating device and a matrix display device. The matrix display device includes a display surface and a matrix substrate. The matrix substrate has a substrate and a matrix. The matrix is disposed on one side of the substrate, and the display surface is located on the other side of the substrate. . The driving method comprises: transmitting the complex encoded signal and the plurality of display signals on the matrix substrate by the matrix display device; and receiving at least one of the encoded signals by operating the operating device on the display surface.

In one embodiment, the encoded signal is capacitively coupled to the operating device from the matrix substrate.

In one embodiment, the encoded signals include touch information, command information, identification information, transaction information, or file information.

In an embodiment, the equal encoded signal is encoded in frequency, or amplitude, or phase, or time difference.

In one embodiment, the encoded signals are transmitted to a plurality of row electrodes or a plurality of column electrodes of the matrix substrate, respectively. The coded signals may be respectively transmitted to the row electrodes or the column electrodes of the matrix substrate sequentially or simultaneously.

In one embodiment, one of the column electrodes simultaneously transmits the same encoded signal.

In one embodiment, the encoded signals transmitted by the row electrodes and the encoded signals transmitted by the column electrodes are different encoding systems.

In one embodiment, the encoded signals are interspersed between the display signals for transmission.

In one embodiment, the encoded signals are transmitted during the neutral time at which the display signals are transmitted. The neutral time is, for example, within an image frame or between the image frames.

In an embodiment, each encoded signal has a start code or an end code.

In one embodiment, the encoded signals are transmitted by triggering a transfer mode switch to initiate the active matrix display device into a transfer mode.

In an embodiment, the driving method further comprises: obtaining a touch information according to the encoded signal; and actuating according to the touch information by the matrix display device.

According to the above description, the present invention transmits a complex coded signal and a plurality of display signals on a matrix substrate by using a matrix display device, wherein the display signal is used to display a picture on the matrix substrate, and the coded signal can be used to enable the matrix substrate to reach the touch function and data transmission. Or other features (such as user identification). When the operating device is operated on the display surface, the encoded signal can be coupled from the matrix substrate to the operating device, and then the encoded signal can be processed to obtain touch information, command information, identification information, transaction information or file information. As can be seen from the above, the visual interface system of the present invention can be directly applied to a matrix substrate, such as a thin film transistor substrate of a liquid crystal display panel, an organic light emitting diode panel, a light emitting diode panel, an electrophoretic display panel or a MEMS display panel, and the like. In turn, the product is lighter and thinner, and the cost is reduced to enhance the competitiveness of the product. In addition, the present invention couples the encoded signal to the external operating device instead of directly reading the encoded signal from the matrix substrate, so that no layout change is required on the matrix substrate, for example, it is not necessary to add a capacitive sensing element in the display panel. To detect changes in external capacitance values, thereby reducing costs and shortening the process.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of driving a visual interface system according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

A driving method of a preferred embodiment of the present invention is applied to a visual interface system. FIG. 1 is a block diagram of a visual interface system 1 of the present embodiment. The visual interface system 1 includes an operating device 11 and a matrix display device 12 coupled to each other for transmitting signals, for example, by capacitive coupling. The output of the operating device 11 can be connected to other units of the system by wired, wireless, electrical or optical means.

2 is a side elevational view of matrix display device 12. As shown in FIG. 2, the matrix display device 12 includes a display surface 121 and a matrix substrate 122. The matrix substrate 122 includes a substrate 123 and a matrix 124. The matrix 124 is disposed on one side of the substrate 123, and the display surface 121 is located on the other side of the substrate 123. Compared with the matrix substrate in the conventional liquid crystal display device, the present invention The matrix substrate 122 is reversed, that is, the substrate 123 of the matrix substrate 122 can be used as the display surface 121 closer to the user than the filter substrate. In the present embodiment, the display surface 121 refers to the surface of the matrix display device 12 closest to the user when the user views the image displayed by the matrix display device 12. The matrix display device 12 further includes a protective glass 125 disposed on one side of the substrate 123 relative to the matrix 124, and the display surface 121 is a surface of the protective glass 125 adjacent to the user. In addition, other members such as a polarizing plate may be further included between the substrate 123 and the cover glass 125.

In this embodiment, the matrix substrate 122 refers to a substrate or a panel having a pixel matrix for displaying images, such as a thin film transistor substrate of a liquid crystal display panel, an organic light emitting diode panel, an inorganic light emitting diode panel, and an electrophoretic display. Matrix panels or MEMS display panels and more. The matrix 124 can include a plurality of row electrodes, a plurality of column electrodes, and a plurality of pixel electrodes, the row electrodes being interleaved with the column electrodes. In addition, the matrix 124 may be an active matrix or a passive matrix. The matrix 124 is exemplified by an active matrix, which may further include a plurality of transistors, and the row electrodes, respectively. The column electrodes and the pixel electrodes are electrically connected.

FIG. 3 is a schematic view showing a matrix substrate of the present embodiment as a thin film transistor substrate. The matrix 124 may include a plurality of row electrodes S ₁ to S _M , a plurality of column electrodes D ₁ to D _N , and a plurality of pixel electrodes E ₁₁ to E _MN , and the row electrodes S ₁ to S _M and the column electrodes D ₁ ~ D _N are staggered and are substantially perpendicular or at an angle to each other. In addition, the matrix 124 may further include a plurality of transistors T ₁₁ -T _MN , respectively, and the row electrodes S ₁ -S _M , the column electrodes D ₁ -D _N , and the pixel electrodes E ₁₁ -E _MN Sexual connection. Here, the row electrodes S ₁ to S _M are so-called scanning lines, and the column electrodes D ₁ to D _N are so-called data lines. In addition, a driving module can be further disposed on the substrate 123, and includes a data driving circuit, a scanning driving circuit, a timing control circuit (not shown), and a gamma correction circuit (not shown), which can be driven by the driving module. The liquid crystal display panel displays an image; since the driving of the image by the driving module is a conventional technique, it will not be described here. In addition, the matrix substrate 122 of this aspect is merely illustrative and is not intended to limit the present invention.

4 is a flow chart showing the steps of a method for driving the visual interface system 1 according to a preferred embodiment of the present invention. The driving method includes steps S01 and S02. Hereinafter, a driving method of the visual interface system 1 will be described with reference to FIGS. 1 to 4.

Step S01: The complex coded signal and the plurality of display signals are transmitted on the matrix substrate 122 by the matrix display device 12. The display signal is used to cause the matrix display device 12 to display an image. The display signal includes, for example, a scan signal and/or a data signal, which can be transmitted by the row electrodes S ₁ -S _M and the column electrodes D ₁ -D _{N , respectively} .

The coded signal can be transmitted to the individual electrodes of the matrix substrate 122 (ie, the electrodes unrelated to the display), or the plurality of row electrodes S ₁ -S _M , or the plurality of column electrodes D ₁ -D _N , or the row electrodes S ₁ -S _M and the columns The electrodes D ₁ to D _N are both available. The encoded signal may be encoded, for example, in frequency, or amplitude, or phase, or code division multiple access (CDMA), or time difference. The encoded signal may include touch information, instruction information, identification information, transaction information, or file information, or other information. That is, the function to be established between the operating device 11 and the matrix display device 12 is used to encode the relevant information into the encoded signal in a specific manner for the purpose of the function. For example, the touch information can make the operating device 11 and the matrix display device 12 reach the touch. Control function; the identification information can enable the operating device 11 and the matrix display device 12 to reach the user identification function, for example, can be applied to the access card; the transaction information can be used for the transaction behavior between the operating device 11 and the matrix display device 12, and the behavior comes from the respective Both the operating device 11 and the matrix display device 12 are provided; the file information can be used to transfer a file, such as a picture, music, etc., from the matrix display device 12 to the operating device 11, as will be described in further embodiments.

The coded signals may be sequentially transmitted to the row electrodes or the column electrodes of the matrix substrate 122, or may be simultaneously transmitted to the row electrodes or the column electrodes of the matrix substrate 122. In order to identify the coded signals transmitted by the row electrodes and the column electrodes, the coded signals transmitted by the row electrodes and the coded signals transmitted by the column electrodes may be different coding systems. For example, by frequency modulation, amplitude modulation, phase modulation or time modulation or code division multiplexing, for example, the time position of the coded signal transmitted by the row electrode and the column electrode is different, or the row electrode is Frequency coding, while column electrodes are amplitude coded. In addition, the column electrodes or one of the row electrodes can simultaneously transmit the same coded signal, that is, the same coded signal can be transmitted by a plurality of column electrodes or row electrodes, which can be applied to the row electrode or the column electrode. The case where the electrode width is small.

In addition, the encoded signal can be displayed between the display screens (such as when occupying a plurality of display frames), or during the blanking time of transmitting the display signals, or between each display signal. The signal is interspersed and transmitted. Among them, the neutral time is between the two image frames. Note that the tolerance for the display screen due to the transmission of the coded signal depends on its application. For example, when the coded signal is used for touch purposes, the flickering problem of the picture must be considered. Therefore, it is necessary to use the neutral time or the signal for each display. Inter-transmission, while for short-term communication purposes, the display can only be paused to transmit only the encoded signal; the encoded signal can also be superimposed directly on the display signal at a higher frequency to form a carrier form, because the frequency is higher than the display signal, so the pair can be reduced. The effect of the display quality; the encoded signal can also be signaled without a DC component to minimize the impact on display quality.

Step S02: receiving at least one of the encoded signals by operating the operating device 11 on the display surface 121. The encoded signal can be coupled from the matrix substrate 122 to the operating device 11 by capacitive coupling, for example. The operating device 11 is, for example, a stylus, a hand of a human body, or a receiving device such as a card reader or the like. When the operating device 11 is operated on the display surface 121 (the operating device 11 may or may not touch the display surface 121 as long as the distance is close enough), the code transmitted from the row electrode or the column electrode of the operating device 11 is transmitted. The signal can be capacitively coupled from the matrix substrate 122 to the operating device 11.

After the operating device 11 receives the encoded signal, there are various ways to process the encoded signal to obtain information contained in the encoded signal, such as touch information or user identification information. The encoded signal can be processed by the operating device 11 to obtain the final information, and the final information can be transmitted to other system devices by wire or wirelessly for reaction. Alternatively, the encoded signal can be directly transmitted back to the matrix display device 12, and the final information is obtained by the processing of the matrix display device 12, and then reacted to the final information by the matrix display device 12 or transmitted to other system devices. In addition, the encoded signal can also be processed by relay processing of the operating device 11, such as amplification processing, filtering processing, etc., and then transmitted to other system devices or matrix display device 12 for processing to obtain final information. Alternatively, in all of the above cases, at least another unit may be added to the visual interface system 1 (for example, the unit is interposed between the operating device 11 and the matrix display device 12) for processing the output of the operating device 11 and the result It is transmitted to other system devices or matrix display devices 12, and the unit can also participate in the processing of the encoded signals.

The driving method further comprises: obtaining a message according to the encoded signal, including touch information, instruction information, identification information, transaction information, or file information, or other information. If the encoded signal contains touch information, after the encoded signal is processed, the touch information can be obtained, for example, so that the matrix display device 12 can be activated according to the touch information.

The following examples illustrate some aspects of the implementation of the encoded signal.

FIG. 5A is a schematic diagram of transmitting encoded signals in a sequential manner, showing signals of adjacent two rows of electrodes (S _M-1 , S _M ) and adjacent two columns of electrodes (D _N-1 , D _N ). The row electrodes S ₁ to S _M respectively transmit the scanning signals SS to sequentially turn on the transistors of each column, and when each column of transistors is turned on, the column electrodes D ₁ to D _N respectively transmit the encoded signals MS and the display signals DS. In this embodiment, as shown in FIG. 5A, when one row of electrodes transmits their scanning signals, only one column of electrodes transmits an encoded signal MS having a different level from the display signal DS. In other words, in the time range in which the row electrode S _M-1 transmits its scanning signal SS, only the column electrode D _N-1 transmits the display signal DS and the encoded signal MS _{N-1 which is} different from the display signal DS; During the time range in which the electrode _SM transmits its scanning signal SS, only the column electrode D _N transmits the display signal DS and the encoded signal MS _{N which is} different from the display signal DS.

FIG. 5A is an example of a row of electrodes corresponding to a column of electrodes. However, the width of the signal is not limited by the method. The signal width may be appropriately defined. For example, when one row of electrodes is turned on, all column electrodes are coded. Signal. In addition, the coded signals (MS _N-1 , MS _N ) in FIG. 5A can be regarded as transmitting (1, 1) or (0, 1) or (1, 0) or (0, 0) in the order in which the row electrodes are turned on. ) signal. If the effect of reducing the display quality is considered, the signal shown in FIG. 5B, that is, the average of the encoded signals output per unit time, has no DC component to prevent the liquid crystal molecules in the liquid crystal display from being polarized. As far as communication is concerned, this sequential scanning is a time division multiplexing (TDM) communication architecture, which means that at a certain time, the communication channel (communication channel) refers to the transmitting end (matrix display device). And the receiving end (operating device) is assigned to a certain source (such as column electrode D _N ), and specifies different time periods for use by different sources. Conversely, if the receiving end can identify which source the signal is from, for example, encoding with time, it can be applied to touch applications. In the following, FIG. 5A is applied to the touch control as an example, and for convenience of description, it is represented by a pulse representing '1' and no pulse representing '0'.

According to FIG. 5A, the timing chart of the encoded signals transmitted by the column electrodes D ₁ to D _N can be as shown in FIG. 6 (the display signal DS for display is omitted), and the column electrodes D ₁ to D _N follow the row electrodes S. _{When 1} to S _M transmits the scanning signal of the high level, the encoded signals MS ₁ to MS _N are respectively transmitted. Since the column electrodes D ₁ to D _N sequentially transmit the coded signals MS ₁ to MS _N in time, the coded signals obtained by the above capacitive coupling (one of MS ₁ to MS _N ) can be known. Which column of electrodes is touched, that is, the X coordinate of the touch coordinate is known. The Y coordinate of the touch coordinate can be known by the row electrodes S ₁ to S _M . Since the scanning signals SS transmitted by the row electrodes S ₁ -S _M are sequentially generated, the essence is the encoded signal, so the scanning signal SS can be regarded as the encoded signal of the present invention and coupled to the operating device by the matrix substrate. Decoding is performed, and the row electrodes S ₁ to S _{M are} turned on in turn to know which row of electrodes is touched. In addition, in order to avoid interference with the display screen during the touch application, the duty cycle of each of the coded signals MS ₁ to MS _{N in} this embodiment is smaller than the operation time of each display signal DS, thereby maintaining display quality.

FIG. 7A is a schematic diagram of an encoded signal in which information encoding is performed in a time-divisional time difference manner (this is a touch, for example, the information can be, for example, an electrode number) (the display signal DS for display is omitted). The coded signals MS ₁ to MS ₃ each have a start code SC, and the time positions of the start code SC are the same as the starting reference point, and the coded signals MS ₁ to MS ₃ can be separated from the start code SC by the time difference. And coding. Using the detected time difference, it is possible to infer which electrode the signal comes from, so that it can be known which electrode is touched. In the above, the start code is used as the starting reference point of the time. In other examples, the start code can also be used as the starting point of data transmission; the coded signal can also have an end code as the end of the data transmission or the end of the time. The reference point; or the end code can be used as the start code for the beginning of the next cycle; or the previous signal is the reference point for the time.

FIG. 7B is the same structure with time division multiplexing, but the time difference of the relative reference point is not used as the information coding, but the number of the electrode is directly used as the code. For example, the MS ₁ to MS ₃ points in the figure correspond to the column electrodes D ₁ to D ₃ , and the coding of the two bits is used as (01), (10) and (11), respectively, to indicate that the coded signals are from different sources. Column electrode. Therefore, the coupled signal can be directly judged from which column electrode it is derived from. This method is not based on the time difference, so it is not necessary to change the order of transmitting signals in sequence, or to transmit several signals within one row electrode scanning time to reduce the time for all column electrodes to transmit encoded signals.

Fig. 8 is a schematic diagram of a coded signal encoded in a grouping manner (the display signal is omitted). Among them, the column electrodes D ₁ to D ₃ are the first group, the column electrodes D ₄ to D ₆ are the second group, and the others are the same (three for each group). The time of the first coded signal transmitted by each of the column electrodes D ₁ to D ₆ is the same, and can be used as a start code, and the second coded signal and the first code transmitted by each of the column electrodes D ₁ to D ₆ are used. The time interval of the signal can be distinguished from which group the encoded signal is coupled. The coded signals MS ₁ transmitted by the column electrodes D ₁ to D ₃ are the same, and the coded signals MS ₂ transmitted by the column electrodes D ₄ to D ₆ are the same. Accordingly, in the touch application, the actual number of encoded signals obtained by the operating device 11 can be reduced, thereby improving the speed of the encoded signal processing.

FIG. 9 is a schematic diagram of the encoded signal placed on the display signal DS. While the column electrodes D _N-1 , D _N transmit the display signal DS, the encoded signals MS _N-1 and MS _{N are} loaded as high frequency signals on the display signal DS. In this embodiment, the time division multiplexing is taken as an example. Of course, the coded signal can be frequency-division multiplexing (FDM), or code-division multiplexing (CDM) or phase-shift coding ( The phase shift keying technique is loaded on the display signal DS.

The encoded signals MS are transmitted in the transmission of the display signals DS. The manner in which the encoded signals MS are interspersed in the display signals DS is exemplified below with reference to FIGS. 10(a) to 10(c). The vertical sync signal V _sync represents a sync signal between the display screens. One period of the vertical sync signal V _sync represents a frame time. FIG. 10(a) shows that the coded signal MS can be transmitted by using at least one frame time, and the display signal DS is not transmitted during the period of time, and the display signal DS is transmitted after the transmission of the coded signal MS is completed. Figure 10 (b) shows that the coded signal MS and the display signal DS are respectively transmitted in the same frame time, and the coded signal MS can be transmitted before or after the display signal DS after compressing the time of transmitting the display signal DS. For example, the transmission of the encoded signal MS is performed before and after the display signal DS. The horizontal sync signal H _sync in FIG. 10(c) represents the sync signal of each horizontal line in the display screen, and one period of the horizontal sync signal H _sync represents the enable time of one horizontal line in the picture. FIG. 10(c) shows that during a horizontal line enable period, the coded signal MS and the display signal DS are transmitted in turn, for example, without affecting the display picture, the coded signal MS is transmitted first, and then the display signal DS is transmitted. As can be seen from the above, FIG. 10(a) to FIG. 10(c) show that the coded signals MS and the display signals DS are interleaved. Note that H _sync only represents the synchronous use, and the enabling electrode can be performed sequentially (as in the conventional display mode) or in a non-sequential manner.

Figure 11 is a schematic diagram of an alternating current signal. Each of the above encoding modes represents '0' and '1' by a signal, for example, a pulse represents '1', and no pulse represents '0', as shown in (a) of FIG. When the signal is applied to a matrix display device, the signal of Fig. 11(a) causes a net DC component (average value per unit time), which affects the display screen, especially the liquid crystal display panel. Since the liquid crystal is driven by a fixed positive bias or a negative bias for a long time, the liquid crystal is not easily rotated. Therefore, in this embodiment, the polarization of the liquid crystal can be avoided by making the encoded signal an alternating current signal or an alternating current driving. Preferably, the average value of the encoded signal transmitted by the same column electrode is zero. In order to avoid affecting the display quality, the AC signals without DC components can be used to represent '0' and '1' as shown in Figs. 11(b) and (c). In addition to using an AC signal without a DC component, it can also be achieved by an AC driving method. For example, after transmitting an encoded signal, a waveform inverted from the encoded signal is sent at intervals, as shown in FIG. 11(d); The inverse waveform can also be transmitted at the same time after collecting several electrodes, as shown in Fig. 11(e). Here, FIG. 11 is for illustrative purposes, and in principle, the technical features of the encoded signal using the AC signal or the AC drive can be applied to any of the above encoding methods.

FIG. 12 is a schematic diagram of the appearance of a matrix display device 12 of a visual interface system according to a preferred embodiment of the present invention. As shown in FIG. 12, the matrix display device 12 further includes a transfer mode switch 127. The driving method further includes transmitting the encoded signals by triggering a transfer mode switch 127 to activate the matrix display device 12 to enter a transfer mode. The transfer mode switch 127 can be a mechanical switch that the user or operating device can trigger to transmit the mode switch 127 to initiate the matrix display device 12 into a transfer mode. Since the column electrodes of the matrix display device 12 need to simultaneously transmit the display signal and the encoded signal in the transmission mode, when the user does not use the touch function, the transmission mode can be turned off to save power, and can also be used as a screen protection. Features to prevent accidental touch. When the user needs to utilize the touch function, the trigger switch 127 is turned on to start the matrix display device 12 to enter the transfer mode. At this time, the row electrode or the column electrode transmits the encoded signal, so that power waste can be avoided. In addition, it should be noted that the switch 127 can also be disposed on the operating device. In this case, after the switch is triggered, the operating device transmits a trigger signal to the matrix display device 12 to enter the transfer mode. It should be noted that the function of the trigger transmission mode switch 127 referred to herein may be a single-trigger switch to switch the touch function, or the user must maintain contact to switch the touch function.

In summary, the present invention transmits a complex coded signal and a plurality of display signals on a matrix substrate by using a matrix display device, wherein the display signal is used to display a picture on the matrix substrate, and the coded signal can be used to enable the matrix substrate to achieve touch function and data transmission. Wheel or other function (such as user identification). When the operating device is operated on the display surface, the encoded signal can be coupled from the matrix substrate to the operating device, and then the encoded signal can be processed to obtain touch information, command information, identification information, transaction information or file information. As can be seen from the above, the visual interface system of the present invention can be directly applied to a matrix substrate, such as a thin film transistor substrate of a liquid crystal display panel, an organic light emitting diode panel, a light emitting diode panel, an electrophoretic display panel or a MEMS display panel, and the like. In turn, the product is lighter and thinner, and the cost is reduced to enhance the competitiveness of the product. In addition, the present invention couples the encoded signal to the external operating device instead of directly reading the encoded signal from the matrix substrate, so that no layout change is required on the matrix substrate, for example, it is not necessary to add a capacitive sensing element in the display panel. To detect changes in external capacitance values, thereby reducing costs and shortening the process.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1. . . Visual interface system

11. . . Operating device

12. . . Matrix display device

121. . . Display surface

122. . . Matrix substrate

123. . . Substrate

124. . . matrix

125. . . Protective glass

127. . . Transfer mode switch

D ₁ ~ D _N . . . Column electrode

DS. . . Display signal

E ₁₁ to E _MN . . . Pixel electrode

MS, MS ₁ ~ MS _N . . . Coded signal

S01, S02. . . Steps of the driving method

S ₁ ~ S _M . . . Row electrode

SC. . . Start code

SS. . . Scanning signal

T ₁₁ ~ T _MN . . . Transistor

1 is a block diagram of a visual interface system in accordance with a preferred embodiment of the present invention;

2 is a side elevational view of a matrix display device of a visual interface system according to a preferred embodiment of the present invention;

3 is a schematic view showing a matrix substrate as a thin film transistor substrate according to a preferred embodiment of the present invention;

4 is a flow chart showing the steps of a method for driving a visual interface system according to a preferred embodiment of the present invention;

5A-11 are schematic diagrams showing different aspects of a coded signal used in a driving method according to a preferred embodiment of the present invention;

FIG. 12 is a schematic diagram of the appearance of a matrix display device of a visual interface system according to a preferred embodiment of the present invention.

S01, S02. . . Steps of the driving method

Claims (16)

A method for driving a visual interface system, the visual interface system comprising an operating device and a matrix display device, the matrix display device comprising a display surface and a matrix substrate, the matrix substrate having a substrate and a matrix, the matrix being disposed on the matrix One side of the substrate, the display surface is located on the other side of the substrate, and the driving method includes: transmitting, by the matrix display device, the complex coded signal and the plurality of display signals on the matrix substrate; and displaying the signal on the display device The surface operates to receive at least one of the encoded signals. The driving method of claim 1, wherein the encoded signal is capacitively coupled to the operating device from the matrix substrate. The driving method of claim 1, wherein the encoded signals include touch information, instruction information, identification information, transaction information, or file information. The driving method of claim 1, wherein the encoding signals are frequency modulation, or amplitude modulation, or phase modulation, or time modulation, or code division multiplexing. The driving method of claim 1, wherein the encoded signals are respectively transmitted to the plurality of row electrodes or the plurality of column electrodes of the matrix substrate. The driving method of claim 5, wherein one of the column electrodes transmits the same encoded signal. The driving method of claim 5, wherein the encoded signals transmitted by the row electrodes and the encoded signals transmitted by the column electrodes are different encoding systems. The driving method of claim 1, wherein the encoded signals are interspersed with the display signals. The driving method of claim 8, wherein the encoded signals are transmitted during a neutral time at which the display signals are transmitted. The driving method of claim 8, wherein the encoded signals are transmitted in an image frame. The driving method of claim 1, wherein each of the encoded signals has a start code. The driving method of claim 1, wherein each of the encoded signals has an end code. The driving method of claim 1, wherein the waveform of each of the encoded signals is an alternating current signal. The driving method of claim 1, further comprising: transmitting the encoded signals by triggering a transfer mode switch to activate the active matrix display device to enter a transfer mode. The driving method of claim 1, further comprising: obtaining a touch information according to the coded signal; and actuating according to the touch information by the matrix display device. The driving method of claim 1, further comprising: pressing a transfer mode switch, the matrix display device enters a transfer mode.