KR101798947B1 - Touch sensing device - Google Patents

Abstract

Disclosed is a touch detection device capable of operating a touch screen at a low cost. According to the present invention, the touch detection device comprises: the touch screen including a plurality of driving lines and a plurality of sensing lines, and divided into two or more touch regions; a plurality of touch screen driving circuits installed by a number corresponding to a number of the touch regions, and connected to each of the sensing lines to receive a sensing signal; and an application processor (AP) interfaced with the touch screen driving circuit through a mobile industry processor interface (MIPI) to receive the sensing signal and detecting a touch position on the touch screen based on the sensing signal, wherein the sensing signal is received from each read-out region corresponding to a touch region different from each other to implement one frame region, thereby detecting a position where a touch occurs. Here, each of the touch screen driving circuits includes a camera serial interface (CSI) transmitter and a camera control interface (CCI) slave, and the AP chip includes a CSI receiver and a CCI master. The CSI transmitter and the CSI receiver are unidirectionally connected to data lanes by a clock lane, and the CCI master and the CCI slave are connected by an inter Integrated circuit (I2C) bus. Accordingly, the MIPI is adopted to the touch screen driving circuit to operate the touch screen, thereby connecting to the MIPI installed in the AP chip cheaper than an FPGA, thus being able to operate the touch screen at a low cost.

Description

TOUCH SENSING DEVICE

The present invention relates to a touch sensing apparatus, and more particularly, to a touch sensing apparatus capable of driving a touch screen at a low cost.

In general, a user interface (UI) allows a user to easily control various electronic devices according to his or her wishes. Representative examples of such a user interface include a keypad, a keyboard, a mouse, an on screen display (OSD), a remote controller having infrared communication or radio frequency (RF) communication function, and the like. User interface technology has been developed to enhance the user's sensibility and ease of operation. Recently, the user interface has evolved into a touch UI, a voice recognition UI, a 3D UI, and the like.

The touch UI is essential for portable information devices. The touch UI is implemented by a method of forming a touch screen on the screen of a display device.

The mutual capacitive touch screen includes driving lines, sensing lines that are orthogonal to the driving lines, and sensor nodes formed at intersections of the driving lines and the sensing lines. Each of the sensor nodes has mutual capacity.

The touch screen driving circuit for driving the mutual capacitance type touch screen supplies a stimulus signal to the driving line and receives a change of the sensor node voltage through the sensing line at the same time. The touch screen driver circuit senses the change of the charged voltage in the sensor nodes before and after the touch, and determines whether or not the conductive material touches the touch screen and its position. Such a touch screen driver circuit is integrated into an integrated circuit called ROIC (Readout Integrated Circuit) and connected to a touch screen.

Generally, one integrated circuit is connected to one touch screen. The integrated circuit includes a driving channel module connected to the driving lines to supply the driving signals to the driving lines, and a sensing channel module connected to the sensing lines and receiving the sensor node voltage received through the sensing lines. In order to sense all the sensor nodes in the touch screen, the integrated circuit should include more than Tx channels on the number of driving lines in the touch screen and Rx channels on the number of sensing lines in the touch screen.

As the size and resolution of the touch screen increases, the number of Tx channels and Rx channels on the touch screen also increase. Therefore, as the size and resolution of the touch screen increases, an integrated circuit must be newly developed for the touch screen.

Korean Registered Patent No. 10-1374018 (Name: Touch Screen Drive Device and Method) (Registered on March 03, 2014) Korean Patent Laid-Open Publication No. 2013-0021074 (Name: Touch Screen Drive Device and Method) (Released on Mar. 03, 2013) Korean Patent Laid-Open Publication No. 2014-0070853 (Name: Touch Sensing System)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a MIPI interface for a touch screen driving circuit for driving a touch screen, And to provide a touch sensing device capable of driving the touch screen at a low cost.

delete

delete

delete

delete

delete

According to an embodiment of the present invention, there is provided a touch sensing apparatus including: a touch screen including a plurality of driving lines and a plurality of sensing lines, the touch screen being divided into at least two touch regions; A plurality of touch screen driving circuits connected to each of the sensing lines and receiving a sensing signal, the touch screen driving circuits having a number corresponding to the number of touch areas; And sensing the touch position on the touch screen based on the sensing signal, wherein the sensing signal is interfaced to the touch screen driving circuit through the MIPI to receive the sensing signal, And an application processor (hereinafter, referred to as an AP) chip that receives the input and implements the input in one frame region to detect where the touch is generated. Each of the touch screen driving circuits includes a CSI (Camera Serial Interface) transmitter and a CCI (Camera Control Interface) slave, and the AP chip includes a CSI receiver and a CCI master. The CSI transmitter and the CSI receiver are unidirectionally connected by data lanes and a clock lane, and the CCI master and the CCI slave are connected to an I2C bus.
In one embodiment, the number of data lanes may be four, the number of clock lanes may be one pair, and the number of touch screen driving circuits may be four.

delete

delete

In one embodiment, each of the touch screen driving circuits may receive sensing signals corresponding to each of the four divided touch screens.

In one embodiment, the sensing signals may be communicated to the CSI receiver of the AP chip via the data lanes.

In one embodiment, the AP chip may configure the touch screen driver circuit through any one of I2C, SPI, and UART.

delete

In one embodiment, the AP chip may be synchronized to the touch screen driver circuit through either I2C, SPI, or UART.

In one embodiment, the AP chip may be connected to an external host system via USB.

In one embodiment, the touch screen driving circuit may further include a TX driving circuit connected to each of the driving lines of the touch screen and supplying a driving pulse of a high logic voltage to the driving lines.

delete

In one embodiment, the touch screen driving circuit may further include a TX driving circuit connected to each of the driving lines of the touch screen and supplying a driving pulse of a high logic voltage to the driving lines. Here, the TX driving circuit may be implemented in a chip form.

According to such a touch sensing apparatus, a touch screen driving circuit for driving a touch screen employs a MIPI interface and is connected to a MIPI interface provided in an AP chip which is less expensive than an FPGA, so that the touch screen can be driven at a low cost.

1 is a block diagram illustrating a touch sensing apparatus according to an embodiment of the present invention.
2 is a conceptual view for explaining touch regions corresponding to the touch screen driving circuits shown in FIG.
3 is a block diagram for explaining the touch screen driving circuit and the application processor chip shown in FIG.
4A is a block diagram for explaining the application processor chip shown in FIG. FIG. 4B is a block diagram for explaining an example of the touch screen driving circuit shown in FIG.
5 is a block diagram for explaining another example of the touch driving circuit shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in more detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a block diagram illustrating a touch sensing apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a touch sensing apparatus according to an embodiment of the present invention includes a touch screen 100, at least one touch screen driving circuit 200, and an application processor chip (hereinafter, AP chip) 300. The touch sensing device is disposed on the display device. The display device may be a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode (OLED) ), An electrophoresis display device (Electrophoresis, EPD), or the like.

The touch screen 100 includes a plurality of driving lines, a plurality of sensing lines intersecting the driving lines, and sensor nodes that can be defined at the intersections of the driving lines and the sensing lines.

The touch screen driving circuit 200 includes a plurality of read-out integrated circuits (hereinafter referred to as a ROIC), and is connected to each of the sensing lines of the touch screen 100 to receive a sensing signal.

Each of the ROICs includes a TX driving circuit and an RX driving circuit. The ROIC supplies drive pulses of a high logic voltage to the drive lines and senses the voltage of the sensor node through the sensing lines and converts the sensed voltage into digital data.

The TX driving circuit supplies driving pulses of a high logic voltage to the driving lines in response to the reference clock CLOCK input from the AP chip 300. The RX driver circuit samples the voltage of the sensor node received through the sensing lines in response to the reference clock CLOCK input from the AP chip 300 and outputs the voltage of the sampled sensor node to the touch data TDATA, .

In FIG. 1, four touch screen driving circuits 200 are shown. However, the number of touch screen driving circuits 200 may be three or less, or five or more. That is, the four touch screen driving circuits divide the touch screen 100 into four touch areas to drive the touch screen 100. On the other hand, the three touch screen driving circuits divide the touch screen 100 into three touch areas to drive the touch screen 100.

The AP chip 300 is connected to the touch screen driving circuit 200 through an interface such as an I2C bus, a SPI (serial peripheral interface), and a system bus, and is connected to the touch screen driving circuit 200 through a MIPI (Mobile Industry Processor Interface) Receives the sensing signal from the screen driving circuit 200, and detects the touch position on the touch screen 100 based on the sensing signal.

The AP chip 300 simultaneously transmits the reference clock CLOCK to the TX driving circuit and the RX driving circuit of the touch screen driving circuit 200 to output timing of the TX driving circuit and sampling and digital conversion of the RX driving circuit Synchronize the timing.

The AP chip 300 may include a direct memory access (DMA) circuit (not shown) for accessing two or more buffer memories. The AP chip 300 writes (writes) data to the buffer memory by touching the (M + 1) frame period (where M is a natural number) received from the RX driving circuit using the DMA circuit, Data of another buffer memory in which data is stored by the touch of the M frame period is read out and the data is analyzed by a predetermined touch recognition algorithm in the touch of the M frame period to obtain touch coordinates including touch position information of the M frame period And outputs the data.

The touch coordinate data may be transmitted to an external host system. Accordingly, the AP chip 300 can estimate the touch position of the M frame period by executing the touch recognition algorithm program while the voltage of the sensor nodes in the (M + 1) frame period is sensed, It is possible to reduce the total sensing time and increase the touch report rate.

The host system may be connected to an external video source device such as a navigation system, a set top box, a DVD player, a Blu-ray player, a personal computer (PC), a home theater system, a broadcast receiver, Video data can be input from the source device. When the touch coordinate data is received from the AP chip 300, the host system executes the application program associated with the touch coordinate value.

Typically, the AP chip interfaces with the camera module via the MIPI. That is, the AP chip can perform H.264 encoding and decoding operations using camera data.

On the other hand, the touch data generated on the touch screen can be regarded as gray level two-dimensional image data. Therefore, in this embodiment, the AP chip 300 can process touch data. That is, in the case of a VGA image, the camera processes [640 × 480] × 3 bits of data of RGB or YcbCr. On the other hand, even though the touch screen has a size of 100 inches, the data to be processed is less than QVGA class [320 X 240 X 1 bit with gray level. Therefore, the AP chip 300 can process the touch data.

In addition, in the MIPI having a 4-lane, if one ROIC is connected to each lane, the AP chip 300 connects up to 4 ROICs to the same MIPI lane to drive the middle / large touch screen 100, Is possible. That is, since four ROICs are connected to one AP chip 300, the middle-sized touch screen 100 can be driven and data processing can be performed.

2 is a conceptual view for explaining touch areas of a touch screen corresponding to the touch screen driving circuits shown in FIG.

1 and 2, the touch screen 100 is divided into a first touch area 110, a second touch area 120, a third touch area 130, and a fourth touch area 140.

Each of the first to fourth touch areas 110, 120, 130, and 140 corresponds to the touch screen driving circuit 200.

For example, the first ROIC 210 corresponds to the first touch region 110, the second ROIC 220 corresponds to the second touch region 120, the third ROIC 230 corresponds to the second touch region 120, Corresponds to the third touch region 130, and the fourth ROIC 240 corresponds to the fourth touch region 140. [

That is, the first ROIC 210 supplies a first driving signal to the driving lines corresponding to the first touch region 110, and supplies the first driving signal to the first touch region 110 through the sensing lines corresponding to the first touch region 110 The voltage is sensed and converted into digital data. The second ROIC 220 supplies a second driving signal to the driving lines corresponding to the second touch region 120 and outputs the voltage of the sensor through the sensing lines corresponding to the second touch region 120 And converts it into digital data. The third ROIC 230 supplies a third driving signal to the driving lines corresponding to the third touch region 130 and outputs the voltage of the sensor through the sensing lines corresponding to the third touch region 130 And converts it into digital data. The fourth ROIC 240 supplies a fourth driving signal to the driving lines corresponding to the fourth touch region 140 and outputs the voltage of the sensor through the sensing lines corresponding to the fourth touch region 140 And converts it into digital data. The first to fourth drive signals may be drive pulses of a high logic voltage. The first to fourth drive signals may be identical to each other.

3 is a block diagram for explaining the touch screen driving circuit and the AP chip 300 shown in FIG. A first touch screen driving circuit 210 and a second touch screen driving circuit 220 are shown for convenience of explanation.

3, the first touch screen driving circuit 210 includes a first ROIC 212, a first camera serial interface (CSI) transmitter 216, and a first camera control interface , Hereinafter referred to as CCI) slave 218.

The first ROIC 212 includes a first TX driving circuit 213 and a first RX driving circuit 214. The first TX driving circuit 213 is connected to each of the driving lines of the touch screen and supplies driving pulses of a high logic voltage to the driving lines. The first RX driving circuit 214 is connected to each of the sensing lines of the touch screen, and senses the voltage of the sensor node and converts it into sensing data. In the present embodiment, the first TX driving circuit 213 and the first RX driving circuit 214 are synchronized with the reference clock CLOCK. Therefore, the timing of the drive pulse supplied to the drive lines, the timing of sampling the voltage of the sensor node, and the timing of converting the voltage of the sampled sensor node into digital data are synchronized with the same reference clock CLOCK.

The first CSI transmitter 216 transmits the sensing data to the AP chip 300 through a plurality of data lanes.

The first CCI slave 218 is connected to the AP chip 300 through an I 2 C bus and controls the first CSI transmitter 216.

The second touch screen drive circuit 220 includes a second ROIC 222, a second CSI transmitter 226 and a second CCI slave 228.

The second ROIC 222 includes a second TX driving circuit 223 and a second RX driving circuit 224. The second TX driving circuit 223 is connected to each of the driving lines of the touch screen and supplies driving pulses of a high logic voltage to the driving lines. The second RX driving circuit 224 is connected to each of the sensing lines of the touch screen, and senses the voltage of the sensor node and converts it into sensing data. In this embodiment, the second TX driving circuit 223 and the second RX driving circuit 224 are synchronized with the reference clock CLOCK. Therefore, the timing of the drive pulse supplied to the drive lines, the timing of sampling the voltage of the sensor node, and the timing of converting the voltage of the sampled sensor node into digital data are synchronized with the same reference clock CLOCK.

The second CSI transmitter 226 transmits the sensing data to the AP chip 300 through a plurality of data lanes.

The second CCI slave 228 is connected to the AP chip 300 via an I 2 C bus and controls the second CSI transmitter 226.

The AP chip 300 includes a first interfacing unit 310, a second interfacing unit 320, and a touch coordinate computing unit 330. Typically, the AP chip 300 is connected to a display device to provide image data to be displayed, and is connected to the camera device to receive image data captured by the camera device. In particular, the AP chip 300 interfaces with the camera device through the MIPI.

In this embodiment, the AP chip 300 is connected to the first ROIC 210 through the MIPI, receives the touch data provided from the first ROIC 210, and calculates touch coordinates. In addition, the AP chip 300 is connected to the second ROIC 220 through the MIPI, receives the touch data provided from the second ROIC 220, and calculates touch coordinates.

The first interfacing unit 310 includes a first CSI receiver 312 and a first CCI master 314.

The first CSI receiver 312 is connected to the first CSI transmitter 216 via the MIPI and receives sensing data provided from the first CSI transmitter 216.

The first CCI master 314 is connected to the first ROIC 210 through an I 2 C bus and provides various control signals to the first ROIC 210. The first CCI master 314 transmits a clock signal to the first CCI slave 218 of the first ROIC 210 via the SCL terminal. Also, the first CCI master 314 transmits or receives a data signal to the first CCI slave 218 of the first ROIC 210 via the SDA terminal.
The second interfacing unit 320 includes a second CSI receiver 322 and a second CCI master 324.
The second CSI receiver 322 is connected to the second CSI transmitter 226 via the MIPI and receives the sensing data provided by the second CSI transmitter 226.
The second CCI master 324 is connected to the second ROIC 220 through an I 2 C bus and provides various control signals to the second ROIC 220. The second CCI master 324 transmits a clock signal to the second CCI slave 228 of the second ROIC 210 via the SCL terminal. Also, the second CCI master 324 transmits or receives a data signal to the second CCI slave 228 of the second ROIC 220 via the SDA terminal.

The touch coordinate calculator 330 calculates touch coordinates on the touch screen based on the sensing data provided by the first CSI receiver 312 or the sensing data provided by the second CSI receiver 322.

FIG. 4A is a block diagram for explaining an example of the first touch screen driving circuit 210 shown in FIG.

Referring to FIG. 4A, the first touch screen driving circuit 210 includes a first ROIC 212, a first CSI transmitter 216, and a first CCI slave 218.

The first ROIC 212 includes a first shift register 212a, a second shift register 212b, a data sampling circuit 212c, an analog-to-digital converter (ADC) 212d And an interrupt generation circuit 212e.

In FIG. 4A, the first shift raster 212a serves as a TX driving circuit. That is, the first shift register 212a supplies driving pulses to the driving lines, which are sequentially delayed in phase in response to the reference clock signal CLOCK.

The second shift register 212b, the data sampling circuit 212c, the ADC 212d, and the interrupt generation circuit 212e serve as RX driving circuits.

The second shift register 212b outputs a sensing pulse of a low logic voltage, which is sequentially delayed in phase with the reference clock CLOCK, to the ADC 212d.

The data sampling circuit 212c charges a sampling capacitor (not shown) of the voltage of the sensor node received through the sensing lines in response to the sensing pulse of the low logic voltage to sample the voltage of the sensor node.

The ADC 212d converts the voltage of the sampled sensor node into digital raw touch data (TDATA) in response to a sensing pulse of a low logic voltage and outputs touch raw data (TDATA) in synchronization with the interrupt signal (IRQ) And outputs it to the CSI transmitter 216.

The first CSI transmitter 216 includes a plurality of data terminals Data1 +, Data1-, Data2 +, Data2-, Data N +, Data N- and a plurality of clock terminals (Clock +, Cclock-) And transmits the touch primitive data to the AP chip 300 connected by the MIPI interface method.

The first CCI slave 218 includes an SCL terminal and an SDA terminal, and is connected to the AP chip 300 through an I2C bus.

4B is a block diagram for explaining the application processor chip shown in FIG.

Referring to FIG. 4B, an application processor (hereinafter referred to as AP) chip 300 includes a CSI receiver 310, a CCI master 320, a buffer memory 340, a memory controller 350 and a touch coordinate estimation circuit 360 . The buffer memory 340 and the memory controller 350 may define a DMA circuit.

The CSI receiver 310 includes a plurality of data terminals Data1 +, Data1-, Data2 +, Data2-, Data N +, Data N- and a plurality of clock terminals (Clock +, Cclock-) And receives the touch-source data from the ROIC 212 of the first touch-screen driving circuit 210 connected in a method.

The CCI master 320 includes an SCL terminal and an SDA terminal and is connected to the ROIC 212 of the first touch screen driving circuit 210 through an I2C bus.

The buffer memory 340 alternately stores the touch primitive data on a frame-by-frame basis under the control of the memory controller 350 like buffer memories.

The memory controller controls the read and write operations of the buffer memory in response to the interrupt signal IRQ received from the interrupt generation circuit 212e of the RX drive circuit.

The touch coordinate estimation circuit 360 executes a preset touch recognition algorithm program to analyze the touch source data TDATA of the (M + 1) -th frame in the buffer memory 340 to estimate coordinates of the touch position. Any of the above-described touch recognition algorithms can be used. The touch coordinate estimation circuit 360 transmits the touch coordinate data (HIDxy) calculated by the touch recognition algorithm program to an external host system.

5 is a block diagram for explaining another example of the first touch driving circuit 210 shown in FIG.

Referring to FIG. 5, the first touch screen driving circuit 210 includes a first driving chip 510 and a second driving chip 520.

The first driving chip 510 includes a first shift raster 512. The first shift raster 512 serves as a TX driving circuit. That is, the first shift register 512 supplies driving pulses to the driving lines, which are sequentially delayed in phase in response to the reference clock CLOCK.

The second driving chip 520 includes an ROIC 522, a CSI transmitter 524, and a CCI slave 526.

The ROIC 522 includes a second shift register 522a, a data sampling circuit 522b, an ADC 522c, and an interrupt generation circuit 522d.

The second shift register 522a, the data sampling circuit 522b, the ADC 522c, and the interrupt generation circuit 522d serve as RX driving circuits.

The second shift register 522a outputs a sensing pulse of a low logic voltage, which is sequentially delayed in phase in response to the reference clock CLOCK, to the ADC 522c.

The data sampling circuit 522b charges the sampling capacitor (not shown) of the voltage of the sensor node received through the sensing lines in response to the sensing pulse of the low logic voltage to sample the voltage of the sensor node.

The ADC 522c converts the voltage of the sampled sensor node into digital raw touch data (TDATA) in response to a sensing pulse of a low logic voltage and outputs the touch raw data (TDATA) in synchronism with the interrupt signal (IRQ) And outputs it to the CSI transmitter 524.

The CSI transmitter 524 includes a plurality of data terminals Data1 +, Data1-, Data2 +, Data2-, Data N +, Data N- and a plurality of clock terminals (Clock +, Cclock-) Transmits the touch raw data to the AP chip (300) connected in a method.

The CCI slave 526 includes an SCL terminal and an SDA terminal, and is connected to the AP chip 300 through an I2C bus.

As described above, since the MIPI exists in the AP that is less expensive than the FPGA, the present invention utilizes the MIPI provided in the AP. Generally, the MIPI receives red image data, green image data, and blue image data, respectively, for each frame and combines them to implement a color image.

The MIPI disclosed in the present invention can receive a touch sense signal in a lead-out area corresponding to a different area and implement it in one frame area to detect where a touch is generated.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. You will understand.

100: touch screen 200: touch screen driving circuit
210: first touch screen driving circuit 212, 522: ROIC
212a, 512: first shift raster 212b, 522a: second shift register
212c and 522b: data sampling circuits 212d and 522c: ADC
212e, 522d: an interrupt generation circuit 213: a TX drive circuit
216, 524: CSI transmitter 218, 526: CCI slave
214: RX driving circuit 300: AP chip
310: CSI receiver 320: CCI master
330: touch coordinates operation unit 340: buffer memory
350: Memory controller 360: Touch coordinate estimation circuit
510: first driving chip 520: second driving chip

Claims (16)

delete delete delete delete A touch screen including a plurality of driving lines and a plurality of sensing lines, the touch screen being divided into at least two touch areas;
A plurality of touch screen driving circuits connected to each of the sensing lines and receiving a sensing signal, the touch screen driving circuits having a number corresponding to the number of touch areas; And
The sensing signal is interfaced to the touch screen driving circuit through the MIPI to receive the sensing signal, and detects the touch position on the touch screen based on the sensing signal. In the lead-out area corresponding to the different touch areas, And an application processor (hereinafter referred to as an AP) chip which receives the input and implements the same in a frame area and detects which position the touch is generated in,
Wherein each of the touch screen driving circuits includes a CSI (Camera Serial Interface) transmitter and a CCI (Camera Control Interface) slave, the AP chip includes a CSI receiver and a CCI master,
Wherein the CSI transmitter and the CSI receiver are unidirectionally connected by data lanes and a clock lane, and the CCI master and the CCI slave are connected by an I2C bus. delete 6. The method of claim 5, wherein the number of data lanes is four, the number of clock lanes is one pair,
Wherein the number of the touch screen driving circuits is four. The touch sensing device of claim 7, wherein each of the touch screen driving circuits receives sensing signals corresponding to each of the four divided touch screens. The touch sensing apparatus of claim 5, wherein the sensing signals are transmitted to the CSI receiver of the AP chip through the data lanes. delete 6. The touch sensing device of claim 5, wherein the AP chip sets the touch screen driving circuit through any one of I2C, SPI, and UART. 6. The touch sensing device of claim 5, wherein the AP chip is synchronized with the touch screen driving circuit through any one of I2C, SPI, and UART. 6. The touch sensing apparatus of claim 5, wherein the AP chip is connected to an external host system via USB. delete The touch screen driving circuit according to claim 5, further comprising a TX driving circuit connected to each of the driving lines of the touch screen and supplying driving pulses of a high logic voltage to the driving lines. Sensing device. 6. The display device according to claim 5, further comprising a TX driving circuit connected to each of the driving lines of the touch screen and supplying driving pulses of a high logic voltage to the driving lines, Wherein the touch sensing device is a touch sensing device.

Images