KR20180046338A - Touch display device, active pen, touch system, touch circuit, and pen recognition method - Google Patents

Abstract

Embodiments of the present invention can efficiently provide display, touch sensing, and pen touch sensing. More specifically, the embodiments relate to a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method enabling multi-pen recognition. The touch display device comprises: a display panel on which a plurality of touch electrodes are arranged; and the touch circuit supplying a drive signal to the display panel and sensing a touch by a finger based on a signal received in response to the drive signal or sensing a pen touch by two or more active pens.

Description

TOUCH DISPLAY DEVICE, ACTIVE PEN, TOUCH SYSTEM, TOUCH CIRCUIT, AND PEN RECOGNITION METHOD BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present embodiments relate to a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method.

2. Description of the Related Art [0002] As an information society has developed, there has been a growing demand for a touch display device for displaying an image. Recently, a liquid crystal display device (LCD), a plasma display panel (PDP) Various display devices such as an organic light emitting display (OLED) and the like are being utilized.

Such a display device provides a touch-based input method that allows a user to easily input information or commands intuitively and conveniently without using a conventional input method such as a button, a keyboard, and a mouse.

In order to provide such a touch-based input method, it is necessary to grasp the presence or absence of a user's touch and accurately detect touch coordinates.

To this end, there is provided a touch capable display device employing one of various touch methods such as a resistance film type, a capacitance type, an electromagnetic induction type, an infrared type, and an ultrasonic type.

Among the various touch methods, a capacitance touch method for detecting presence or absence of touch and touch coordinates based on a capacitance between touch electrodes or a change in capacitance between a touch electrode and a pointer such as a finger through a plurality of touch electrodes formed on a touch screen panel Many are being adopted.

Meanwhile, attempts have been made to incorporate a touch screen panel composed of touch electrodes into a display panel in order to improve manufacturing convenience and size reduction of the touch display device.

In addition to fingers, pen touch technology has also been developed in response to increased demand for sophisticated pen touch input.

However, while the touch display device basically provides a display function, there is a considerable difficulty in effectively providing a finger touch or a pen touch together.

In view of the above, it is an object of the present embodiments to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display, a touch sensing .

Another object of the present invention is to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of improving the pen touch sensing performance without deteriorating display performance and touch performance.

Another object of the present invention is to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method which enable a plurality of pen touch inputs at the same time.

Another object of the present invention is to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of correctly distinguishing and processing a plurality of pen touch inputs from each other.

It is still another object of the present embodiments to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of recognizing positions, pressures, tilts, .

In one aspect, the present embodiments provide a display in which a plurality of data lines and a plurality of gate lines are arranged, and a plurality of touch electrodes in which a plurality of sub-pixels, which are defined by a plurality of data lines and a plurality of gate lines, It is possible to provide a touch display device including a panel, a data driving circuit for driving a plurality of data lines, a gate driving circuit for driving a plurality of gate lines, and a touch driving circuit for driving a plurality of touch electrodes.

In such a touch display apparatus, one frame period can be divided into two or more display periods and two or more touch periods.

Further, in the touch display device, it is possible to sense a touch object other than the active pen and the active pen during two or more touch periods.

The two or more touch intervals may include a period for transmitting a beacon signal from the display panel to the active pen.

The active pen can determine panel information and panel status based on the beacon signal.

The active pen can determine either the pen search mode or the pen mode as a touch panel state based on the beacon signal.

In the pen search mode, it is possible to recognize whether or not there is an active pen and an active pen position.

In the pen mode, the position of the active pen and various data can be received from the active pen. If a new active pen is added through full-sensing for the entire screen area, the location of the new active pen and related data can be transmitted.

Each of the plurality of touch electrodes may be connected to the touch driving circuit through a signal line.

Each of the plurality of touch electrodes may be larger than the size of one sub-pixel region.

According to one aspect of the present invention, there is provided a display device including a display panel on which a plurality of touch electrodes are arranged, a display panel on which a drive signal is supplied to the display panel, a touch sensed by a finger based on a signal received in response to the drive signal, It is possible to provide a touch display device including a touch circuit that senses a pen touch by a pen.

One frame period may repeatedly include a display period and a blank period.

In two or more blank periods of a plurality of blank sections in one frame period, pen signals output from two or more active pens may be radiated to the display panel.

The touch circuit can sense the pen touch by two or more active pens based on the pen signals.

According to another aspect of the present invention, there is provided a display device comprising: at least two active pens; a display panel on which a plurality of touch electrodes are arranged; a touch panel for sensing a touch by a finger based on a signal received in response to a drive signal, Or a touch display device including a touch circuit that senses a pen touch by two or more active pens.

In the touch display device, one frame section repeatedly includes a display section and a blank section. In two or more blank sections of a plurality of blank sections in one frame section, pen signals output from two or more active pens are radiated to a display panel .

The touch circuit of the touch display device can sense the pen touch by the two or more active pen based on the pen signals.

In another aspect, the present embodiments provide an active pen for interlocking with a touch display device, comprising: at least two pen tips contacting or non-contacting a display panel of a touch display device; and at least one of the two or more pen tips, And a processor for receiving a driving signal applied to the display panel through at least one of the two or more pen tips and outputting a pen signal to the display panel through at least one of the two or more pen tips .

The pen signal can be output to the display panel in the blank interval between the two display intervals.

During the blank interval during which the pen signal is output to the display panel, the pen signal may be output to the display panel in other active pens.

According to another aspect of the present invention, there is provided a liquid crystal display device including a first circuit for supplying a driving signal to a display panel on which a plurality of touch electrodes are arranged and detecting a signal generated in response to the driving signal through a display panel, And a second circuit that senses a touch by a finger based on the detected signal or senses a pen touch by the active pen.

The first circuit operates in a plurality of blank periods in one frame period, supplies driving signals to the display panel during two or more different blank periods in one frame period, and outputs pen signals output from two or more active pens Can be detected through the display panel.

The second circuit can sense pen touch by more than two active pen based on the pen signals.

According to another aspect of the present invention, there is provided a pen recognition method of a touch display device, comprising the steps of: supplying a drive signal to a display panel on which a plurality of touch electrodes are arranged; and detecting a signal generated in response to the drive signal through a display panel And a second step of sensing the touch by the finger or sensing the pen touch by the active pen on the basis of the signal detected in the first step and the second step.

In the first step, the touch display device operates in a plurality of blank intervals within one frame interval, and supplies driving signals to the display panel during two or more different blank intervals in one frame interval, The output pen signals can be detected through the display panel.

In the second step, the touch display device can sense the pen touch by two or more active pens based on the pen signals.

According to another aspect of the present invention, there is provided a display device including a display panel on which a plurality of touch electrodes are arranged, a display panel on which a drive signal is supplied to the display panel, a touch sensed by a finger is sensed based on a signal received in response to the drive signal, It is possible to provide a touch display device including a touch circuit that senses a pen touch by a pen.

There is a blank interval between two display intervals in which display driving is performed, and in a plurality of blank intervals, a first blank interval corresponding to three different blank intervals in which the display panel receives a pen signal from the active pen, There may be a blank section and a third blank section.

The touch circuit receives the pen signal output from the active pen through the display panel to detect the position of the active pen during the first blank interval and transmits the pen signal output from the active pen through the display panel during the second blank interval And senses the position of the active pen by receiving the pen signal output from the active pen through the display panel during the third blank period.

Even if at least one of the positions of the active pen sensed through the first blank interval, the position of the active pen sensed through the second blank interval and the position of the active pen sensed through the third blank interval are different, The temporal spacing between the section and the second blank section and the temporal spacing between the second blank section and the third blank section may be the same.

In another aspect, the present embodiments provide an active pen for interlocking with a touch display device, comprising: at least two pen tips contacting or non-contacting a display panel of a touch display device; and at least one of the two or more pen tips, And a processor for receiving a drive signal applied to the display panel through at least one of the two or more pen tips and for generating a pen signal on the display panel through at least one of the two or more pen tips .

The pen signal generated on the display panel through at least one of the two or more pen tips to detect the position of the active pen corresponds to three different blank sections among the blank sections existing between the two display sections in which the display drive is performed The first blank interval, the second blank interval, and the third blank interval. Even if at least one of the position of the active pen in the first blank section, the position of the active pen in the second blank section and the position of the active pen in the third blank section is different, the time interval between the first blank section and the second blank section The interval between the second blank section and the third blank section may be the same.

According to another aspect of the present invention, there is provided a display device including a display panel on which a plurality of touch electrodes are arranged, a display panel on which a drive signal is supplied to the display panel, a touch sensed by a finger is sensed based on a signal received in response to the drive signal, It is possible to provide a touch display device including a touch circuit that senses a pen touch by a pen.

There may be a blank interval between display periods in which the display panel is driven to display. There may be a first blank interval and a second blank interval in which beacon signals are transmitted from the display panel to the active pen.

The beacon signal transmitted in the first blank interval may include information for controlling driving for sensing the pen touch by the active pen during one or more blank intervals existing between the first blank interval and the second blank interval.

According to another aspect of the present invention, there is provided a touch panel including a display panel on which a plurality of touch electrodes are arranged, a touch including a touch circuit for supplying a touch driving signal to a plurality of touch electrodes, A display device can be provided.

One frame section of the display panel may include a plurality of display sections and a plurality of blank sections, and the plurality of blank sections may include at least a first blank section and a second blank section.

A beacon signal may be supplied to at least one of the plurality of touch electrodes during the first blank interval.

The touch driving signal may be supplied to at least one of the plurality of touch electrodes during the second blank interval.

The plurality of blank sections may further include a third blank section and may supply a signal different from the touch driving signal supplied to the touch electrode in the second blank section during the third blank section.

The touch circuit includes a touch sensing unit outputting a touch driving signal to sense a touch electrode by sensing a touch electrode, a signal generating unit generating a signal different from the touch driving signal, and a signal generating unit And a switch for electrically connecting the touch electrode to the touch electrode.

In yet another aspect, the present embodiments provide an active pen that interacts with a touch display device, comprising: one or more pen tips that are in contact or non-contact with a display panel of a touch display device; and at least one of the at least one pen tip And a processing unit which receives a beacon signal applied to the display panel and outputs a pen signal to the display panel based on the beacon signal.

According to another aspect of the present invention, there is provided a touch panel including a display panel on which a plurality of touch electrodes are arranged, a touch including a touch circuit for supplying a touch driving signal to a plurality of touch electrodes, A display device, comprising: a display device; one or more pen tips in contact or non-contact with the display panel; and a beacon signal applied to the display panel through at least one of the at least one pen tip, And a processing unit for outputting a pen signal.

One frame section of the display panel includes a plurality of display sections and a plurality of blank sections, and the plurality of blank sections may include at least a first blank section and a second blank section.

A beacon signal may be supplied to at least one of the plurality of touch electrodes during the first blank interval. The touch driving signal may be supplied to at least one of the plurality of touch electrodes during the second blank interval.

The pen signal may be outputted to the display panel in the blank section between the two display sections and in the blank section during which the pen signal is output to the display panel, the other active pen may also output the pen signal to the display panel.

According to the embodiments described above, it is possible to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method that can efficiently provide display, touch sensing, and pen touch sensing.

According to the embodiments, it is possible to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of improving the pen touch sensing performance without deteriorating display performance and touch performance.

According to the embodiments, it is possible to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of simultaneously inputting a plurality of pen touches.

According to the embodiments, it is possible to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of correctly distinguishing and processing a plurality of pen touch inputs from each other.

According to the embodiments, there is provided a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method that enables recognition of positions, pressures, tilts, buttons, and the like with respect to not only one pen but also a plurality of pens can do.

1 is a view showing a touch display device according to the present embodiments.
2 is an operation timing diagram of the touch display device according to the present embodiments.
FIG. 3 is a diagram illustrating a concept that a plurality of display periods and a plurality of touch intervals are performed during one frame period according to the LHB driving method of the touch display apparatus according to the present embodiments.
FIG. 4 is a driving timing diagram when a plurality of display periods and a plurality of touch intervals proceed during one frame period according to the LHB driving method of the touch display device according to the present embodiments.
FIG. 5 is a diagram illustrating a pen searching mode concept of the touch display device according to the present embodiments.
FIG. 6 is a diagram illustrating a pen mode concept of the touch display device according to the present embodiments.
7 is a timing diagram of a pen searching mode of the touch display apparatus according to the present invention.
8 is a timing diagram of a pen mode of the touch display device according to the present embodiments.
FIG. 9 is a diagram showing a specific timing diagram of a beacon transmission interval and a full sensing (F / S) interval in the pen search mode of the touch display device according to the present embodiments.
10 is a diagram showing a specific timing diagram of the local sensing period in the pen mode of the touch display device according to the present embodiments.
11 is a diagram for explaining a multiplexer driving method of the touch display device according to the present embodiments.
FIG. 12 is a diagram illustrating a multi-pen recognition state of the touch display device according to the present embodiments.
13 is a diagram illustrating an active pen in association with a touch display device according to the present embodiments.
14 is a diagram showing an example of a beacon signal and a reception of a jingle signal in an active pen interlocked with the touch display device according to the present embodiments.
FIG. 15 is a diagram showing an example of position, tilt, and data signal transmission in the active pen interlocked with the touch display device according to the present embodiments.
16 is a view showing two pen tips in an active pen interlocked with the touch display device according to the present embodiments.
17 and 18 are diagrams illustrating the tilting situation of the active pen in conjunction with the touch display device according to the present embodiments.
19 and 20 are diagrams showing LHB drive control using a beacon signal in the touch system according to the present embodiments.
21 is a diagram exemplarily showing a format of a beacon signal in the touch system according to the present embodiments.
22 is an exemplary diagram showing LHB driving and pen driving for the pen search mode of the touch system according to the present embodiments.
23A is an exemplary diagram showing LHB driving and pen driving for the pen mode of the touch system according to the present embodiments.
23B is another exemplary diagram showing LHB driving and pen driving for the pen mode of the touch system according to the present embodiments.
24A is an exemplary diagram of a timing diagram of panel drive and pen drive in a touch system according to the present embodiments.
24B is a diagram showing a circuit structure for supplying three kinds of touch panel drive signals (beacon signal, finger signal, LFD signal) to the touch panel in the touch system according to the present embodiments.
FIG. 25 is a diagram illustrating characteristics related to recognition of the position, pressure, and data of the active pen when the pen touch sensing is performed in the touch system according to the present embodiments.
Fig. 26 is a diagram showing an example of a drive signal in the touch display device according to the present embodiments.
Fig. 27 is an exemplary diagram of a pen signal in the active pen according to the present embodiments. Fig.
28 is a driving timing diagram between the panel and the active pen in the tilt tone mode and the full tone mode in the touch system according to the present embodiments.
29 is a drive timing diagram between the panel and the active pen in the data mode in the touch system according to the present embodiments.
30 is a diagram showing pulse patterns of a pen signal in the touch system according to the present embodiments.
FIGS. 31 and 32 are views showing intervals of LHBs corresponding to the pen position sensing period in the touch system according to the present embodiments.
33 is a diagram illustrating LHB driving for power consumption reduction in the touch system according to the present embodiments.
FIG. 34 shows driving of the touch panel and the active pen in the up-link period and the down-link period when one LHB is time-divided into the up-link period and the down-link period in the touch system according to the present embodiments FIG.
35 is a diagram illustrating a digital modulation method of a signal transmitted from a touch panel and a signal transmitted from an active pen in the touch system according to the present embodiments.
36 is a diagram showing full sensing and local sensing in the touch system according to the present embodiments.
37 is a view showing variable control of a local sensing area in a touch system according to the present embodiments.
38 and 39 are exemplary diagrams of local sensing in the touch system according to the present embodiments.
40 is a view showing two types of touch electrodes in the touch display device according to the present embodiments.
41 is a view showing a region where one touch electrode is located when the display panel is a liquid crystal display panel and a touch panel is built in the touch display device according to the present embodiments.
42 is a circuit diagram of each sub pixel in the display panel when the display panel in the touch display device according to the present embodiments is an organic light emitting display panel.
FIG. 43 is a view briefly showing a formation position of a touch electrode when the display panel is an organic light emitting display panel and a touch panel is incorporated in the touch display device according to the present embodiments.
FIGS. 44 to 46 are exemplary views of a TOE (Touch Sensor Metal Layer On Encapsulation Layer) structure when the display panel is an organic light emitting display panel and a touch panel is built in the touch display device according to the present embodiments.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

FIG. 1 is a diagram showing a touch display device 100 according to the present embodiment, and FIG. 2 is an operational timing diagram of a touch display device 100 according to the present embodiments.

Referring to FIG. 1, the touch display device 100 according to the present embodiment includes a touch sensing function for a passive touch input pointer such as a finger, a touch sensing function for an active touch And a pen touch sensing function (pen recognition function) for the active pen corresponding to the input pointer.

The touch display device 1000 according to the present embodiment is a display device in which a touch panel TSP including a plurality of touch electrodes TE as a touch sensor is built in the display panel 110, TV), a monitor, or a mobile device such as a tablet or a smart phone.

For example, the touch display device 100 can be used as a plurality of touch electrodes TE by blocking a plurality of common electrodes (Vcom electrodes) used in the display driving.

As another example, the touch display apparatus 100 may use a plurality of touch electrodes TE as electrodes for a touch sensor (i.e., electrodes dedicated for touch driving).

The display panel 110 may be various types of panels such as a liquid crystal display panel and an organic light emitting display panel.

For example, in a case where the display panel 110 is a liquid crystal display panel, the touch display device 100 may include a plurality of common electrodes for applying a common voltage Vcom to form an electric field with the pixel electrodes, TE).

As another example, when the display panel 110 is an organic light emitting display panel, the touch display device 100 includes a first electrode constituting an organic light emitting diode (OLED), an organic light emitting layer, And a plurality of touch electrodes TE may be formed on a touch sensor metal layer located on an encapsulation layer having a sealing function.

Hereinafter, for convenience of explanation, it is assumed that a plurality of touch electrodes TE are used as touch driving electrodes (touch sensors) at the time of touch driving and used as common electrodes (Vcom electrodes) at the time of driving the display do.

The touch display apparatus 100 includes a touch circuit TC (TC) for driving a touch panel (TSP, also referred to as a touch screen panel) to receive a signal through the touch panel TSP and performing touch sensing and pen touch sensing based on the received signal ).

The touch circuit TC includes a first circuit for driving a touch panel TSP to receive a signal through the touch panel TSP and a second circuit for receiving a touch through the touch panel TSP, And a second circuit for performing sensing (finger touch sensing) and pen touch sensing (pen recognition processing).

The first circuit is referred to as a touch driving circuit (ROIC), and the second circuit is also referred to as a touch controller (TCR).

As shown in Fig. 1, each touch driving circuit (ROIC) may be implemented as an integrated driving chip (SRIC) together with a data driving circuit (SDIC) for driving data lines.

The integrated driver chip (SRIC) may be a chip on film (COF) type mounted on a film.

The film on which the integrated driving chip (SRIC) is mounted can be bonded to the bonding portion of the display panel 110 and the bonding portion of the printed circuit board (PCB), respectively.

A touch controller (TCR) or the like may be mounted on the printed circuit board (PCB).

The touch driving circuit ROIC and the data driving circuit SDIC may be implemented as separate driving chips. The touch operation circuit ROIC may be electrically connected to a plurality of touch electrodes TE constituting the touch panel TSP through a plurality of signal lines SL.

Referring to FIGS. 1 and 2, the touch display device 100 divides one frame period (frame period) into one or more display periods and one or more touch periods. Here, the display period and the touch period may be defined by a synchronization signal SYNC.

For example, if one frame period is divided into two display periods (a first display period and a second display period) and two touch periods (a first touch period and a second touch period), during one frame period, The display driving in the first display period, the touch driving in the first touch period, the display driving in the second display period, and the touch driving in the second touch period can proceed sequentially.

For example, when the touch electrodes TE serve as a touch sensor corresponding to a touch driving electrode, and also serve as a common electrode (Vcom electrode) corresponding to a display driving electrode, A common voltage Vcom (which may be in the form of a DC voltage) is applied to a plurality of touch electrodes TE serving as a common electrode (Vcom electrode) during a display period, and a source electrode (or a data line DL (Vgata) having a gate high voltage (VGH) or a gate low voltage (VGL) voltage is applied to the gate electrode (or the gate line GL) .

The touch display apparatus 100 applies a touch driving signal (TDS) to the touch electrode TE during a touch period.

Here, in this specification, the touch driving signal is also referred to as a touch driving voltage (Vtouch) or a touch panel driving signal or a driving signal.

At this time, the touch display device 100 applies the same signal as the touch driving signal Vtouch applied to the touch electrode TE to the data line DL and / or the gate line GL, Or the like may be applied to the data line DL and / or the gate line GL by the same or substantially the same or similar signal as the touch driving signal Vtouch have. Here, "substantially the same" means that the two values are not exactly the same but the difference is within the predetermined tolerance margin or measurement error range. For example, the allowable margin or measurement error range may be ± 20%, ± 10%, ± 5%, ± 1%, and so on.

That is, the touch display device 100 applies the same signal (Vtouch_data) as the touch driving signal (Vtouch) applied to the touch electrode (TE) to the data line (DL) (Voltage difference of the voltage) and phase, etc., may apply the same (substantially the same) or similar signal (Vtouch_data) as the touch driving signal Vtouch to the data line DL.

The touch display apparatus 100 may apply the same signal Vtouch_gate as the touch driving signal Vtouch applied to the touch electrode TE to the gate line GL or change the frequency and amplitude (Substantially equal) or similar signal (Vtouch_gate) to the touch driving signal Vtouch may be applied to the gate line GL.

3 is a diagram illustrating a display period (16 display periods) and a plurality of touch periods (16 touch periods) in one frame period according to the LHB (Long Horizontal Blank) driving method of the touch display apparatus 100 according to the present embodiments. FIG. 4 is a diagram illustrating a concept in which a plurality of display periods (16 display periods) and a plurality of touch periods (16 touch segments) is progressing.

However, FIGS. 3 and 4 show a case in which the entire area of the screen is displayed once during one frame period, and the touch sensing is performed twice for the entire area of the screen. That is, when the display frequency (display refresh rate) is 60 Hz, the touch frequency (touch report rate) is 120 Hz.

Referring to FIGS. 3 and 4, the touch display device 100 according to the present embodiment is a display device in which a touch electrode TE as a touch sensor is built in the display panel 110. FIG.

In this touch display device 100, for example, a common electrode (Vcom electrode) can be used as the touch electrode TE.

The touch display apparatus 100 drives the display panel 110 by dividing one frame period (one frame period) by the display period D and the touch period T. [

Here, each of the display period D and the touch period T may be repeated once or twice or more.

3 and 4, one frame period is divided into sixteen display periods (D) for display driving and sixteen blank periods (hereinafter referred to as long horizontal blanking period (LHB) Quot; Blank ", LHB # 1 to LHB # 16). Here, the 16 LHBs (LHB # 1 to LHB # 16) may include 16 touch intervals (T). That is, touch driving is performed in 16 LHBs (LHB # 1 to LHB # 16).

In Fig. 3 and Fig. 4, "1/16" means the temporal length of each display period D in one frame period. 3 and 4, "2/15" and "115 " refer to the relative temporal length of each touch period T in one frame period.

4, the length (1/15) of the touch interval T in two specific LHBs (LHB # 8, LHB # 16) during one frame period is shorter than the length (1/15) of the other LHBs (LHB # 8 and LHB # (2/15) of the touch interval T in the LHB (excluding the 16th LHB).

Therefore, in the two specific LHBs (LHB # 8 and LHB # 16), after the 1/15 "long touch period T advances, the remaining time period of 1/15" It can be utilized as a section.

(E.g., LHB # 8, LHB # 16) including a touch interval T of a length (e.g., 1/15) shorter than the length (e.g., 2/15) of the touch interval T in other LHBs ) May exist in one frame period or in more than one frame period.

During the display period, a common voltage (Vcom DC voltage) is applied to the common electrode, a corresponding display data voltage Vdata is applied to the source electrode (or data line), and a display gate voltage VGH , VGL) may be applied.

At least one of a frequency, an amplitude (a voltage difference between a high level voltage and a low level voltage), and a phase, etc., when the touch driving signal (touch driving voltage) is applied to the touch electrode during the touch period The same (or substantially the same) or similar signal as the touch driving signal can be applied to the source electrode and / or the gate electrode (data line and / or gate line).

This voltage application (signal application) is called load free driving for eliminating or reducing unnecessary parasitic capacitance in the source electrode and / or gate electrode (data line and / or gate line) during the touch period.

As an example of such a load-free driving, the touch driving signals may be applied to all the touch electrodes TE, all the data lines and the mode gate lines during the touch period.

3 and 4, one frame period is divided into 16 display periods (D) in which display drive is performed and 16 LHBs (LHB # 1 to LHB # 16) in which display drive does not proceed, and 16 LHB driving is performed for LHB (LHB # 1 to LHB # 16), and the multiplexer (MUX) is configured for the first to fifteenth operations. In this case, it is a touch timing diagram in which the display refresh rate is 60 Hz and the touch report rate (frequency for calculating touch coordinates) is 120 Hz.

The touch display device 100 according to the present embodiments to be described in more detail below is capable of recognizing the position of a plurality of active pens (simply referred to as pens), the pressure and tilt of a plurality of active pens It is possible to perform the multi-pen recognition process including recognition of the multi-pen.

In addition, the touch display device 100 according to the present embodiments can provide a driving method capable of driving a plurality of active pen corresponding to an active touch input pointer.

The embodiments of the present invention can implement a touch display device 100 capable of recognizing a plurality of active pen corresponding to an active touch input pointer and touch sensing, and an active pen associated therewith.

The present embodiment is characterized in that the functions and functions of a plurality of active pen positions and pressures (tip pressure, pen pressure, pressure, etc.), tilt (inclination or pen tilt) To be implemented.

The present embodiments can be applied to a passive touch input pointer (a touch object, for example, a finger, a general touch pen (passive pen)) instead of an active pen (an active touch input pointer) Etc.) may be possible.

In the present exemplary embodiment, the display driving and the touch driving are alternately performed in one frame period, and during the touch period in which the touch driving is performed, the touch object (a passive touch input pointer such as a finger ), A general touch pen, etc.) can be provided.

The touch display apparatus 100 according to the present embodiment is provided with a section for giving the touch panel information (for example, an in-cell touch panel ID, a status, etc.) to the active pen , The active pen may determine a touch state and a touch panel state (e.g., a pen searching mode, a pen mode, etc.) by viewing a beacon signal (control signal).

In the pen searching mode according to the present embodiment, the touch display device 100 can determine whether or not the active pen exists, the position of the active pen, and the like

In the pen mode according to the present embodiment, the touch display device 100 displays the position of the active pen and various data (data required for touch sensing (pen recognition) of the active pen, for example, pressure, Etc.) from the active pen, and it is possible to transmit the position and related data of the added active pen through full sensing of the entire screen area (all the touch electrodes).

The touch electrode according to the present exemplary embodiments may be applied to an in-cell touch using a touch display device 100 (e.g., a common electrode (Vcom electrode) as a touch electrode TE) A plurality of touch electrodes TE are driven in a so-called MUX unit (or MUX channel unit), and display driving and touch driving are divided into a display period and a touch period, (Pen information) and a state or the like with the active pen during the touch interval, and the position of a plurality of active pen is sensed during the touch interval, and the pen data (pen signal) of each of the plurality of active pens is transmitted A driving method and an apparatus can be provided.

FIG. 5 is a diagram illustrating a pen searching mode concept of the touch display apparatus 100 according to the present embodiments. FIG. 6 is a diagram illustrating a pen mode concept of the touch display device 100 according to the present embodiments. 7 is a timing diagram of a pen searching mode of the touch display apparatus according to the present invention. 8 is a timing diagram of a pen mode of the touch display device 100 according to the present embodiments.

Referring to FIG. 5 to FIG. 8, one frame (frame period) includes 16 display periods to be display-driven and 16 LHBs that are not driven to display.

Of the sixteen LHBs, one or two specific LHBs (e.g., LHB # 1, LHB # 9) are sections during which a beacon signal (simply referred to as a beacon) is transmitted (110) and the active pen are driven and the touch sensing and the pen touch sensing (pen recognition) are performed.

Of the 16 LHBs, some LHBs (e.g., LHB # 8, LHB # 16) among the remaining LHBs except the beacon signal transmission period (e.g., LHB # 1 and LHB # 9) It may be a dummy section (DMY) in which the pen is not driven. This dummy period DMY can also reduce the power consumption (see FIG. 33).

Here, for example, the dummy section DMY may be an LHB (e.g., LHB # 8, LHB # 16) immediately before an LHB (e.g., LHB # 1 or LHB # 9) corresponding to a beacon signal transmission period.

In Fig. 5 and Fig. 6, "1/16" means the temporal length of each display period in one frame period. In FIG. 5 and FIG. 6, "2/12" means the relative temporal length of each touch interval in 12 LHBs excluding four LHBs corresponding to a beacon signal transmission interval and a dummy interval in one frame interval. Referring to FIGS. 7 and 8, a sensing target area (a full sensing area (entire screen area) or a local sensing area (a full sensing area) for eight LHBs (LHB # 1 to LHB # 8) among 16 LHBs included in one frame period ) And senses the sensing target area (full sensing area (entire screen area) or local sensing area) for the second time for the next eight LHBs (LHB # 9 to LHB # 16).

7, F / S 1-1, F / S 2-1, F / S 3-1, F / S 4-1, F / S 5-1, and F / F / S 2-2, F / S 3-2, F / S 4-2, F / S 5-2, and F / S 5-2, which are six full sensing periods included in the first sensing period / S 6-2 is six full sensing intervals included in the second sensing interval of the sensing range.

Referring to FIG. 5, the touch display apparatus 100 further includes a section (beacon signal transmission section) for giving touch panel information (for example, an in-cell touch panel ID) to the active pen. However, the display panel 110 may be referred to as a touch panel or a panel, and the active pen may be referred to as a pen.

The active pen can determine whether or not to touch (corresponding panel information) and the touch panel status (e.g., operation modes such as pen search mode, pen mode, etc.) by viewing a beacon signal.

The beacon signal of the beacon signal transmission period may be outputted simultaneously in the entire multiplexer, and may be output simultaneously in some multiplexers. Below, the beacon signal is also simply referred to as a beacon.

In the pen searching mode, the presence of the active pen and the position of the active pen can be determined.

Here, the full sensing (F / S) is sequentially sensed (signal detection) through the entire multiflexer (or all the channels of all the multiplexers) to detect the finger touch position and the pen position (the position of the active pen) .

In the pen mode, the active pen receives the position, tilt, and various pen data from the active pen, and the full sensing (half sensing) progressing within the ½ frame (half of one frame interval) ), The position of the existing active pen and the position of the added active pen can be sensed.

Here, the various kinds of pen data may include at least one of a pressure (pressure), pen button input information, pen identification information (pen ID), and the like.

The secondary position information, pen data, position and tilt of the active pen can be processed in a so-called local sensing (L / S) mode in which sensing can be performed only on the multiflexer where the active pen is located. The configuration of the multiplexer in which the local sensing is performed may be variable.

The pen searching mode may be an operating mode in which the first active pen can be recognized as an operating mode that can be proceeded in the absence of the recognized active pen.

The pen mode is an operation mode capable of recognizing various information about the active pen (e.g., position, tilt (pen tilt), pressure (pressure), pen button input information, pen identification information (pen ID) And may be an operation mode in which an additional active pen may be newly recognized.

The beacon signal in the pen searching mode and the beacon signal in the pen mode may contain the same information or different information.

(I.e., sensing of a passive touch input pointer such as a finger) can be performed even when the active pen is driven, and the position and the pressure of a plurality of active pens (i.e., an active touch input pointer) ), A tilt (also referred to as a tilt or a pen tilt), and a button.

9 is a diagram showing a specific timing diagram of a beacon transmission interval and an F / S (Full Sensing) interval in the pen search mode of the touch display device 100 according to the present embodiments. 10 is a diagram showing a specific timing diagram of the local sensing period in the pen mode of the touch display device 100 according to the present embodiments.

Referring to FIG. 9, in the pen searching mode, a beacon signal may be transmitted from the touch display device 100 to the active pen during a beacon period (beacon signal transmission period).

For example, within one frame period, the first LHB (LHB # 1) among the 16 LHBs can be used as a beacon signal transmission interval.

As another example, in one frame period, a first LHB (LHB # 1) and one or more additional LHBs (e.g., LHB # 8, LHB # 9, LHB # 10, etc.) Can be utilized.

(E.g., touch panel ID, touch panel status, driving frequency (LFD frequency), etc.) are transmitted through a beacon signal, and a communication method such as spread spectrum can be used.

Here, the spread spectrum communication method may include, for example, direct sequence spread spectrum (DSSS), frequency hopping spread spectrum (FHSS), and the like.

(Touch panel drive signal) for driving the touch panel (TSP) built in the display panel 110 for a certain period of time in each touch interval in which sensing is performed during a period excluding the beacon interval (beacon signal transmission interval) (Hereinafter also referred to as a ping signal) is generated in the touch panel TSP, and the active pen generates a signal for synchronizing the driving signal (pen signal) And generates and emits (outputs) a pen signal synchronized with a driving signal for driving the touch panel TSP.

After receiving the ping signal, the active pen may generate a pen signal synchronized with the driving frequency of the touch panel (TSP).

The pen signal has the same frequency as the drive signal (touch panel drive signal) for driving the touch panel and has a positive phase (0 degree) relationship, or has the same frequency as the drive signal (touch panel drive signal) May be an AC signal having a reverse phase (180 degrees) relationship, or it may be a DC signal having a constant DC voltage.

9 and 10, the pen signal for sensing the position and / or tilt of the active pen with respect to full sensing or local sensing is the same frequency as the touch panel drive signal, (0) composed of pulses having a positive phase relationship with a signal and a signal section (1) composed of pulses having the same frequency as the touch panel drive signal and having an inverse phase relation with the touch panel drive signal, Type signal section.

10, the pen signal (pen data) for transmitting various kinds of additional information (e.g., pressure, button information, etc.) of the active pen is the same frequency as the touch panel drive signal, A signal section (0) composed of pulses having a positive phase relationship with the drive signal, a signal section (1) composed of pulses having the same frequency as the touch panel drive signal and having an inverse phase relation with the touch panel drive signal, And a signal section Z having a voltage. The signal section may include one, two, or three types of signal sections.

When the pen signal is an AC signal, the pen signal may be in the form of, for example, PSK (Phase Shift Keying) or D-PSK (Differential Phase Shift Keying).

Active Pen may be able to be code by hopper (contactless) or by different method of phase depending on contact state (eg PSK or D-PSK).

Referring to FIG. 10, in the pen mode, a beacon signal is transmitted from the touch panel TSP to the active pen in the beacon period (beacon signal transmission period).

The touch panel information (e.g., Touch Panel ID, Touch Panel status, driving frequency (LFD frequency), etc.) can be transmitted through the beacon signal.

The beacon signal of the pen mode may be a signal having the same form as the beacon signal of the pen searching mode or the signal differently expressed as the touch panel information (e.g., Status). For example, the beacon signal of the pen mode may be DSSS (Direct Sequence Spread Spectrum ) May be possible in the form of spread spectrum signals.

A separate ping (Ping) for synchronizing the touch panel driving signal for driving the touch panel TSP and the driving signal (pen signal) of the active pen during a predetermined time in each touch period in which sensing is performed during a period excluding the beacon signal transmission period ) Signal is generated in the touch panel TSP, and the active pen can receive the ping signal and perform signal synchronization.

After receiving the ping signal, the active pen generates a pen signal synchronized with the driving frequency of the touch panel (TSP).

The pen signal has the same frequency as the drive signal (touch panel drive signal) for driving the touch panel and has a positive phase (0 degree) relationship, or has the same frequency as the drive signal (touch panel drive signal) May be an AC signal having a reverse phase (180 degrees) relationship, or it may be a DC signal having a constant DC voltage.

For example, the pen signal for sensing the position and / or tilt of the active pen with respect to full sensing or local sensing may be a pulse signal having the same frequency as the touch panel drive signal and having a positive phase relationship with the touch panel drive signal A signal interval 0 and a signal interval 1 having the same frequency as the touch panel drive signal and composed of pulses having an inverse phase relation with the touch panel drive signal.

As another example, a pen signal (pen data) for transmitting various kinds of additional information (e.g., pressure, button information, etc.) of the active pen is a signal having the same frequency as the touch panel drive signal, A signal section 1 having pulses, a signal section 1 having pulses having the same frequency as the touch panel drive signal and having an inverse phase relationship with the touch panel drive signal, a signal section Z having a constant DC voltage, One, two, or three kinds of signal sections.

The pen signal may be, for example, an AC signal such as PSK (Phase Shift Keying) or D-PSK (Differential Phase Shift Keying) or a DC signal having a constant DC voltage.

The position of the active pen is firstly calculated in a full sensing period and then the secondary position and pen data (pressure, tilt, various additional information) are subjected to so-called local sensing, So that the pen position and the pen data (pressure, tilt, various kinds of additional information) can be sensed.

The number of sensing lines (the number of touch electrode rows or the number of touch electrode columns) constituting the local sensing is variable and can be changed every LHB (Long Horizontal Blank).

The active pen may be codeable by a different method (eg, PSK or D-PSK) depending on the hover (non-contact) or contact state.

In the case of the contact method, a plurality of tips (tip, also referred to as a pen tip) are constituted in the active pen, and output timing of each tip is made different according to time, (TSP).

The pen data corresponding to the pen position and other pen signals not related to the tilt are transmitted from the active pen to the touch panel (TSP) for a separately allocated time.

The pen data includes a signal interval (0) composed of pulses having the same frequency as the touch panel drive signal and having a positive phase relationship with the touch panel drive signal, a signal interval (0) having the same frequency as the touch panel drive signal, A signal section 1 composed of pulses having a predetermined DC voltage and a signal section Z having a constant DC voltage, or two or three types of signal sections.

The pen data may be in the form of a signal such as PSK (Phase Shift Keying) or D-PSK (Differential Phase Shift Keying) in the signal period (0, 1) in the form of an AC signal.

The pen data may include at least one of additional information such as pressure (pressure) of the pen tip, pen button input information, pen identification information (ID), and the like.

The above-mentioned pressure information need not be transmitted every frame.

The information that may be included in the pen data may be transmitted in a predetermined order between the active pen and the touch display device 100 (panel).

11 is a diagram for explaining a multiplexer driving method of the touch display apparatus 100 according to the present embodiments.

Referring to FIG. 11, it is assumed that the multiplexer circuit comprises eight multiplexers (MUX A, MUX B, MUX C, MUX D, MUX E, MUX F, MUX G, MUX H).

Each of the MUX A, MUX B, MUX C, MUX D, MUX E, MUX F, MUX G and MUX H has four channels (1, 2, 3, 4). (1, 2, 3, 4 are the channel numbers of each MUX)

Referring to FIG. 11, for example, a plurality of touch electrodes TE may be grouped into a plurality of groups (Group 1, 2, 3, 4).

Group 1 1110 may be touch electrodes (touch electrodes sensed in the MUX 1 driving period) sensed by a driving signal output through channel 1 of each multiplexer.

The second group 1120 may be touch electrodes (touch electrodes sensed in the MUX 2 driving period) that are sensed by a driving signal output through channel 2 of each multiplexer.

Group 3 1130 may be touch electrodes (touch electrodes sensed in the MUX 3 driving period) that are sensed by a driving signal output through channel 3 of each multiplexer.

Group 4 1140 may be touch electrodes (touch electrodes sensed in the MUX 4 driving period) that are sensed by a driving signal output through channel 4 of each multiplexer.

When the touch electrodes are sensed, the other channels of each multiplexer are driven by a load-free driving (LFD) driving signal corresponding to the same or substantially the same signal as the touch driving signal (also referred to as a touch panel driving signal or driving signal) Can be output.

Here, "substantially the same" means that the two values are not exactly the same but the difference is within the predetermined tolerance margin or measurement error range. For example, the allowable margin or measurement error range may be ± 20%, ± 10%, ± 5%, ± 1%, and so on.

The LFD driving signal is a signal to be applied to the peripheral electrodes in order to reduce the parasitic capacitance between the touch electrode to be sensed and the peripheral electrode (e.g., data line, gate line, etc.).

If the touch driving signal (touch panel driving signal) applied to the touch electrode and the LFD driving signal applied to the other electrode (e.g., data line, gate line, etc.) are the same during the touch period, (Including the touch driving signal) may be referred to as an LFD driving signal.

FIG. 12 is a view showing the multi-pen recognition state of the touch display device 100 according to the present embodiments.

12, the area 1 of the touch electrodes driven by the driving signal outputted through the channel 1 of each multiplexer and the area 3 of the touch electrodes driven by the driving signal outputted through the channel 3 of each multiplexer are connected to the first, The local sensing area may be the same or different depending on the pen position.

Even if these areas 1 and 3 are the same, a pen ID or the like may be required to accurately distinguish the areas 1 and 3.

FIG. 13 is a diagram showing an active pen in conjunction with the touch display device 100 according to the present embodiments. FIG. 14 is a diagram illustrating an example of receiving a beacon signal, a finger signal, and the like in an active pen operatively associated with the touch display device 100 according to the present embodiments. Fig. 15 is a diagram showing an example of transmitting pen signals such as position, tilt, and pen data in the active pen that is linked to the touch display device 100 according to the present embodiments.

Referring to FIG. 13, in the active pen, the P / A may be composed of two or more portions that receive or transmit an electric field as a pen tip portion.

Two or more pen tips (P / A) are separated by a certain distance.

The values for the distances of the two or more pen tips (P / A) may be included in the pen data and provided to the touch display device 100.

The distance between two or more pen tips (P / A) is used to calculate the tilt of the active pen. Therefore, it is possible to calculate the pen tilt by deliberately designing the distance between two or more pen tips (P / A).

P / B is a part for sensing the pressure of the pen tip, and may be constituted by, for example, a pressure sensor (e.g., MEMS) and an amplifier (Amp).

The P / C includes a receiving end for sensing the frequency of the electric field received from the pen tip (P / A), a transmitting end for generating a signal synchronized with the touch panel (TSP) An MCU (Micro Control Unit) for controlling the timing of the transmission end, receiving information on the pressure signal from the P / B to generate information on it, and controlling other button signals, And may include a circuit portion composed of a portion excluding a unit (ex. Bluetooth).

The P / B or P / C includes two or more pen tip and switch for switching operation, a frequency sensor for sensing the frequency of an electric field (signal) received through the touch panel (TSP) A pulse generator, and the like.

Here, the frequency detector may be implemented by, for example, a comparator or the like, and may include an amplifier. The pulse generator may include an amplifier.

The MCU (Micro Control Unit) can select the protocol according to the beacon signal and control the pulse generation timing according to the beacon signal or the ping signal.

The combination of P / B and P / C is called a processing unit (P / BC).

P / D is battery part.

P / E is a part that includes other peripheral devices such as a button, a Bluetooth, and the like.

P / F is a pen body.

16 is a view showing two pen tips in an active pen interlocked with the touch display device 100 according to the present embodiments. 17 and 18 are diagrams illustrating the tilting situation of the active pen in conjunction with the touch display device 100 according to the present embodiments.

Referring to Fig. 16, the active pen has two pen tips (tip 1, tip 2), and each can transmit a separate signal pulse (pen signal).

The touch circuit TC including the touch driving circuit ROIC and the touch controller TCR obtains the centers of the tips 1 and 2 using the signal pulse (pen signal) received through the touch panel TSP , The angle (tilt) of the corresponding active pen can be calculated using the distance from each center. In the following, the center of the tip 1 is regarded as the position of the tip 1, and the center of the tip 2 is regarded as the position of the tip 2.

Referring to FIG. 17, when the angle (tilt angle) between the active pen and the touch panel TSP is 90 degrees, the position of each of the two tips in the active pen in the touch panel TSP ≪ / RTI > Tip2) may or may not coincide.

In this case, the cosine value cos &thetas; of the tilt angle is as follows.

cos θ = (difference of position of tip 1 and tip 2 on the touch panel) / (distance of tip 1 and tip 2 in the active pen) ≒ 0

Therefore,? (Tilt angle) becomes 90 degrees.

Referring to FIG. 18, when the angle (tilt angle) between the active pen and the touch panel TSP is 60 degrees, the position of the tip and the position of the tip 2 in the touch panel TSP do not coincide with each other.

In this case, the cosine value of the tilt angle is as follows.

cos θ = (difference between tip 1 position and tip 2 position on the touch panel) / (distance between tip 1 and tip 2 in the active pen) ≒ 0.5

Therefore,? (Tilt angle) becomes 60 degrees.

On the other hand, the pen ID can be assigned as follows.

For example, the pen data may be allocated to a certain bit in every frame. And the order of the active pen can be specified through the beacon signal. The touch circuit TC can perform pen ID tracking by viewing the pen signal received via the touch panel TSP.

For example, the pen IDs of the four active pens including the active pen A, the active pen B, the active pen C, and the active pen D are represented by a bit string composed of two bits and included in the data, A pen ID represented by a bit string corresponding to 00 can be assigned to the active pen A and a pen ID represented by a bit string corresponding to 01 can be assigned to the active pen B, C may be assigned a pen ID expressed by a bit string corresponding to 10, and the active pen D may be assigned a pen ID expressed by a bit string corresponding to 11.

The pen ID assigned to each of the four active pens is included in the data and is transmitted to the touch display device 100. The touch display device 100 can identify the active pen by checking the pen ID included in the received data .

Each active pen may transmit information about its own pen ID by including it in data every time it transmits data (pen data) to the touch display device 100, or may transmit it by including it in data to be transmitted with a certain period.

Further, in the case where the other active pen (s) are located in a remote area, each active pen may increase the period of transmitting its own pen ID or may not transmit the pen ID.

As another example, the touch circuit TC may be capable of tracking pen ID via Bluetooth. That is, the active pen transmits its own pen ID via Bluetooth, and the touch circuit TC receives the pen ID from the active pen and can perform pen ID tracking.

An example of the pen pressure will be described. Assuming that the pen pressure (pressure) is represented by 9 bits and that the number of bits for each pen pressure is assigned to each frame by 3 bits, Pen pressure can be transmitted across the frame.

For example, when the display driving frequency is 60 Hz, the rate (frequency) for recognizing the pen pressure is 20 Hz (= 60/3).

Hereinafter, a touch system, a touch display device, an active pen, a touch circuit, a driving method, and a pen recognition method according to the above-described embodiments will be described again with specific examples.

Prior to a specific description, the touch system, touch display device, active pen, and touch circuit according to the above-described embodiments will be briefly described again.

As described above, the touch system according to the present embodiments includes the touch display device 100 and one or more active pens or the like.

The touch display device 100 according to the present embodiment includes a touch panel TSP in which a plurality of touch electrodes TE are disposed and a touch panel TSP in which a touch by a finger is sensed or a pen touch by at least one active pen is sensed And a touch circuit (TC) for performing a sensing process for the touch screen.

The sensing process performed by the touch circuit TC is to supply a drive signal (also referred to as a touch drive signal, a touch panel drive signal, or the like) to the touch panel TSP and to receive Sensing the touch by the finger or sensing the pen touch by the at least one active pen based on the signal that is generated by the touch sensor.

When the touch circuit TC supplies a driving signal to the touch panel TSP, the driving signal supplied to the touch panel TSP is transmitted to the active pen touching or near the touch panel TSP.

The touch panel TSP in the touch display device 100 according to the present embodiments refers to a plurality of touch electrodes TE and may exist separately on the outside of the display panel 110. However, It may be built in.

The touch circuit TC included in the touch display device 100 according to the present embodiment supplies a driving signal to the display panel 110 in which a plurality of touch electrodes TE are arranged, (ROIC) for sensing a touch by a finger based on a signal detected by the first circuit (ROIC) or sensing a pen touch by an active pen Two circuits (TCR), and the like.

The active pen according to the present embodiment is characterized in that it includes at least two pen tip P / A that are in contact with or not in contact with the display panel 110 of the touch display device 100 and at least two of the two or more pen tips P / Sensing a pressure (pressure, pen pressure) through one, receiving a drive signal applied to the display panel 110 via at least one of the two or more pen tips (P / A) (P / BC) for generating a pen signal on the display panel 110 through at least one of the display panel 110 and the display panel 110.

The driving method of the touch system and the pen recognition method according to the present embodiments are based on blank driving.

In the touch display apparatus 100, one frame period may include one or more display periods D for display driving required for displaying an image, and one or more blank intervals for not driving a display.

The display interval D and the blank interval are repeated.

The blank period is a period in which there is no driving for displaying an image, and is a period existing between two display periods (D). Here, the driving for displaying an image may include a process of supplying a data voltage (Vdata) to a data line and supplying a scan signal to a gate line, and the like.

In this blank period, the sensing process can proceed.

That is, in the blank section, a sensing process for sensing a touch by a finger or sensing a pen touch by one or more active pen based on a signal received through the touch panel TSP by driving the touch panel TSP may be performed .

Meanwhile, one frame period in the touch display apparatus 100 may include two or more display periods D and two or more blank periods.

That is, in one frame interval, the display interval D and the blank interval may be repeated twice or more.

In this manner, when two or more blank sections are included in one frame section, each blank section is referred to as "Long Horizontal Blank (LHB) ".

Two or more blank intervals LHB existing in one frame period may be used as intervals for touch sensing and / or pen touch sensing.

FIGS. 19 and 20 are diagrams showing LHB drive control using a beacon signal BCON in the touch system according to the present embodiments. FIG. 21 shows a format of the beacon signal BCON in the touch system according to the present embodiments. Fig.

19 and 20 illustrate a case where one frame period includes 16 display periods D and 16 LHBs (LHB # 1 to LHB # 16) in which display driving is proceeded, as shown in FIG. 4 , And 16 LHBs (LHB # 1 to LHB # 16) for separating the 16 display periods (D).

The beacon signal BCON is supplied from the touch circuit TC to the touch panel TSP. The active pen can receive the beacon signal BCON supplied to the touch panel TSP through the pen tip P / A.

19, the LHBs (LHB # 1 to LHB # 16) in one frame period are one LHB # (LHB # 1 to LHB # 16) in which the beacon signal BCON is transmitted from the touch panel TSP to the active pen, 1) may exist.

20, a plurality of LHBs (LHB # 1 to LHB # 16) in one frame period are divided into two or more LHBs in which the beacon signal BCON is transmitted from the touch panel TSP to the active pen # 1, LHB # 9).

20, the 16 LHBs (LHB # 1 to LHB # 16) in one frame period are divided into a first LHB (LHB # 1 to LHB # 16) in which the beacon signal BCON is transmitted from the touch panel # 1) and a second LHB (LHB # 9). That is, the first LHB (LHB # 1) and the second LHB (LHB # 9) corresponding to the beacon signal transmission period are included in one frame period.

The beacon signal BCON transmitted from the first LHB (LHB # 1) to one or more active pen is transmitted to one or more LHBs (LHB # 1) existing between the first LHB (LHB # 1) and the second LHB 2 to LHB # 8) for sensing the pen touch by one or more active pen.

The information contained in the beacon signal BCON may include touch panel information (in the case where the touch panel is embedded in the display panel, it may be display panel information), drive control information, and the like.

According to the above description, how the driving in one or more LHBs after the LHB (LHB # 1) in which the beacon signal (BCON) is transmitted through the beacon signal (BCON) is interlocked with the touch- The active pen can display the beacon signal BCON, and the active pen can drive the touch display device 100 and the driving corresponding to the driving. Accordingly, correct pen recognition (pen touch sensing) can be performed.

As shown in FIG. 20, when two or more LHBs (LHB # 1 and LHB # 9) corresponding to the beacon signal transmission period are included in one frame period, the amount of information carried in the beacon signal BCON may be reduced. This can reduce the processing burden of the touch circuit TC generating the beacon signal BCON and the processing burden of the active pen receiving and reading the beacon signal BCON.

20, one or more LHBs (LHBs) exist between the first LHB (LHB # 1) and the second LHB (LHB # 9) according to the beacon signal (BCON) transmitted from the first LHB LHB # 2 to LHB # 8), the operation mode of the active pen may be changed.

Here, the operation mode of the active pen may be a pen search mode, a pen mode, or the like related to pen search, detailed pen information recognition, additional pen search, etc., and a full sensing mode (Full Sensing Mode, Local Sensing Mode, or the like, and may be a Full Tone Mode and a Tilt Tone Mode associated with the pen signal or pen recognition information output from the active pen. have.

According to the above description, the touch display device 100 and the active pen share the operation modes through the beacon signal BCON and can accurately perform an operation corresponding to the operation mode. Accordingly, the touch display device 100 and the active pen can perform the pen recognition driving operation through accurate interlocking operation.

20, one or more LHBs (LHBs) exist between the first LHB (LHB # 1) and the second LHB (LHB # 9) according to the beacon signal (BCON) transmitted from the first LHB The frequency of the pen signal (AC signal including a plurality of pulses) output from the active pen during the LHB # 2 to LHB # 8 can be changed.

Thus, the active pen can generate the pen signal having the frequency at which the touch circuit TC can detect and process the signal. Accordingly, the touch circuit (TC) can correctly receive and recognize the pen signal having the frequency that can be recognized and processed by the touch circuit (TC) through the touch panel (TSP), so that accurate pen recognition can be performed.

20, one or more LHBs (LHBs) exist between the first LHB (LHB # 1) and the second LHB (LHB # 9) according to the beacon signal (BCON) transmitted from the first LHB LHB # 2 to LHB # 8), the number of pulses of the pen signal output from the active pen may be changed.

Thus, the active pen can generate the pen signal having the number of pulses capable of signal detection and signal processing by the touch circuit TC. Accordingly, the touch circuit (TC) can correctly receive and recognize the pen signal having the number of pulses that can be recognized and processed by the touch circuit (TC) through the touch panel (TSP), thereby enabling accurate pen recognition.

20, one or more LHBs (LHBs) exist between the first LHB (LHB # 1) and the second LHB (LHB # 9) according to the beacon signal (BCON) transmitted from the first LHB LHB # 2 to LHB # 8) may be different.

Accordingly, the active pen can accurately know how long the driving operation according to the driving control information learned through the beacon signal (BCON) is to proceed, so that the active pen can operate correctly with the touch display device 100 .

In order to perform drive control through the above-described beacon signal BCON, the beacon signal BCON may be in the format shown in FIG.

Fig. 21 is a format of a beacon signal BCON for the example of Fig. LHB # 2, LHB # 3, LHB # 4, and LHB # 5 until the LHB # 9 corresponding to the next beacon signal transmission period after the LHB # 1 corresponding to the beacon signal transmission period, (BCON) in the case where LHB # 5, LHB # 6, LHB # 7, LHB # 8 exist.

Referring to FIG. 21, the beacon signal BCON may include a first portion F, a second portion P, and a third portion CNTP.

The first part F is a part where information indicating the frequency of the pen signal is set.

The first portion F may consist of one bit or bit string and one or more bits or a corresponding decimal value may correspond to a particular frequency value.

For example, when the first part F is 11 (2 bits), the frequency indicated by the first part F may be the first frequency corresponding to 11 (decimal number = 3). In another example, when the first part F is 10 (2 bits), the frequency indicated by the first part F may be a second frequency corresponding to 10 (decimal number = 2).

The second portion P is a portion in which the number of pulses of the pen signal or the corresponding information is set.

The second portion P may consist of one bit or bit stream and one or more bits or a corresponding decimal value may represent a specific number of pulses or information corresponding thereto.

The third part CNTP is an LHB between the current beacon signal transmission period (LHB # 1 in FIG. 20) and the next beacon signal transmission period (LHB # 9 in FIG. 20) (LHB # 2 to LHB # 8)) are set.

The third portion (CNTP) may include one or more detail fields.

The number of detailed fields corresponds to the number of LHBs between the current beacon signal transmission interval and the next beacon signal transmission interval.

According to the beacon signal format of FIG. 20 according to the case of FIG. 20, the third part CNTP is the number of LHBs existing between the current beacon signal transmission interval LHB # 1 and the next beacon signal transmission interval LHB # (7) of detail fields (C1 to C7).

That is, seven detailed fields (C1 to C7) included in the third part (CNTP) are 7 fields (C1 to C7) existing between the current beacon signal transmission interval LHB # 1 and the next beacon signal transmission interval LHB # LHB (LHB # 2 to LHB # 8).

C1 is set to control information indicating the driving state, driving type, or transmission signal type in the LHB # 2.

C2 is set with control information indicating the driving state, driving type, or transmission signal type in the LHB # 3.

C3 is set with information indicating the driving state, drive type, or transmission signal type in the LHB # 4.

C4 is set to control information indicating the driving state, driving type, or transmission signal type in the LHB # 5.

C5 is set to control information indicating the driving state, driving type, or transmission signal type in the LHB # 6.

C6 is set to control information indicating the driving state, drive type, transmission signal type, and the like in the LHB # 7.

C7 is set to control information indicating the driving state, drive type, or transmission signal type in the LHB # 8.

Each of the seven detailed fields C1 to C7 included in the third part CNTP may be composed of one bit or bit string and one or more bits or a corresponding decimal value may be a specific number of pulses Or corresponding control information.

The number of bits constituting each of the seven detailed fields C1 to C7 varies depending on the number of types of control information to be displayed in each of the seven detailed fields C1 to C7 included in the third portion CNTP .

For example, if the number of types of control information to be displayed in each of the seven detailed fields C1 to C7 included in the third part CNTP is three to four, seven detailed fields C1 to C7 ) Must be two or more bits.

For example, if the number of types of control information to be displayed in each of the seven detailed fields C1 to C7 included in the third portion CNTP is five or more, seven detailed fields C1 to C7 ) Must be 3 bits or more.

As a specific example, each of the seven detailed fields C1 to C7 included in the third portion CNTP may be composed of a bit string (including two or more bits) representing decimal digits 0, 1, 2,

The decimal number 0 may be a value indicating a full tone mode of the pen signal for full scan (full sensing) related to pen search and pen position sensing and the like.

The decimal number 1 may be a value indicating a tilt tone mode for tilt recognition.

The decimal number 2 may be a value for informing the pressure of the active pen.

The decimal number 3 may be a value indicating data (also referred to as pen data, which may include additional information such as a button, a pen ID, a checksum, and the like).

Meanwhile, intervals between beacon signal transmission intervals may be uniform intervals or nonuniform intervals.

For example, referring to FIG. 20, in a frame period or another frame period in which the first LHB (LHB # 1) and the second LHB (LHB # 9) exist, a third LHB 20), the interval between the first LHB (LHB # 1) and the second LHB (LHB # 9) and the interval between the second LHB and the third LHB are the same It may or may not be.

If the intervals between beacon signal transmission intervals are set to be equal, the interlocking operation (driving) of the touch panel TSP and the active pen can be performed more efficiently.

If the intervals between beacon signal transmission intervals are set to be unequal, the touch panel TSP and the active pen may be set according to the presence or absence of the active pen or the number of active pen or the presence of a passive touch input pointer Can be adaptively performed.

The beacon signal BCON having such a format includes touch panel type information (e.g., insell type), LHB drive information, multiplexer drive information, power mode information (e.g., LHB information such as panel and pen- ), And the like.

On the other hand, the beacon signal BCON may include information for driving synchronization between the touch panel TSP and the active pen. That is, the beacon signal BCON can also serve as a ping signal.

The various information included in the beacon signal BCON may be stored in a lookup table of the touch display device 100. [

Here, the lookup table can be pre-shared with the active pen.

FIG. 22 is an exemplary diagram showing LHB driving and pen driving for a pen search mode of the touch system according to the present embodiments. FIG. 23A is a diagram illustrating an example of a pen mode Mode and FIG. 23B is another exemplary diagram showing LHB driving and pen driving for Pen Mode of the touch system according to the present embodiments.

The Pen Searching mode is an operation mode that can be proceeded to search for an active pen when there is no recognized active pen, and it may be an operation mode capable of recognizing the first active pen.

The pen mode is an operation mode capable of recognizing various information about the active pen (e.g., position, tilt (pen tilt), pressure (pressure), pen button input information, pen identification information (pen ID) And may be an operation mode in which an additional active pen may be newly recognized.

22 to 23B, in the case of the pen search mode, the beacon signal BCON transmitted from the LHB (LHB # 1, LHB # 9 in FIG. 22) corresponding to the beacon signal transmission period, , The beacon signal BCON transmitted from the LHB corresponding to the beacon signal transmission period (LHB # 1, LHB # 9 in FIGS. 23A and 23B) may be different.

22, in the pen search mode, each of the seven LHBs (LHB # 2 to LHB # 8) between the current beacon transmission interval (LHB # 1) and the next beacon transmission interval (LHB # 9) , A "Full Tone mode section" in which the touch panel (TSP) and the active pen operate in order to detect the touch and the touch of the pen in the whole area of the screen by fully sensing the entire area of the screen have.

That is, in the full tone mode section, a touch drive signal (Vtouch) in the form of AC signal is supplied to the touch panel (TSP), and the active pen transmits the pen signal Can be output.

Therefore, in the beacon signal BCON, the seven detailed fields C1 to C7 of the third part CONP are all set to 0 (decimal) indicating the Full Tone mode. Therefore, the beacon signal BCON can be set to FP0000000.

23A shows a pen mode for one active pen, and FIG. 23B shows a pen mode for two active pen.

Referring to FIG. 23A, in the case of the pen mode for one active pen, a plurality of LHBs (LHB # 1 to LHB # 16) in one frame period are connected to the LHB LHB # 1, and LHB # 9), and a full-tone area in which the touch panel (TSP) and the active pen operate to detect the presence or absence of a touch and a pen touch in the entire screen area by full- (LHB # 4, LHB # 5, LHB # 8, LHB # 12, LHB # 13 and LHB # 16) corresponding to the "Full Tone mode section" LHB # 2, LHB # 6, LHB # 10, and LHB # 14 corresponding to a section (pen position / tilt sensing section) for detecting the position and tilt of the active pen through the pen signal, LHB (LHB # 3, LHB # 7) corresponding to a period (pen pressure sensing period) in which the touch display apparatus 100 recognizes the pressure of the pen by notifying the pressure, And outputting the data may touch display 100 may include a LHB (LHB # 11, # 15 LHB) appropriate to recognize the pen-related supplementary information section (pen data transmission interval).

According to the driving situation according to the example of FIG. 23A, by using an example of setting the values of the seven detailed fields C1 to C7 in the third portion CNTP in FIG. 21, the beacon signal (LHB # BCON) may be set to FP1200120, and the beacon signal (BCON) transmitted from LHB # 9 may be set to FP1300130.

Referring to FIG. 23B, in case of the pen mode for two active pens (first active pen Pen 1 and second active pen Pen 2), the beacon signal BCON is supplied to two active pens Pen (LHB # 1, LHB # 9) and LHBs (LHB # 1 to LHB # 16) within one frame section are subjected to full sensing The LHB (LHB) corresponding to the "Full Tone mode section" in which the touch panel (TSP) and the two active pens (Pen 1 and Pen 2) LHB # 13, LHB # 13, LHB # 13, LHB # 5, LHB # 5 and LHB # LHB (LHB # 2, LHB # 10) corresponding to a section (pen position / tilt sensing section) for sensing the positions of the two active pens Pen 1 and Pen 2 and two touch display devices 100 Through the pen signal output from the active pen (Pen 1, Pen 2), two active The LHB (LHB # 6, LHB # 14) corresponding to the section (pen position / tilt sensing section) for detecting the tilt of the pen (Pen 1, Pen 2) and the first active pen The LHB (LHB # 3) corresponding to the section (pen pressure sensing period) during which the touch display apparatus 100 recognizes the pen pressure of the first active pen Pen 1 and the second active pen Pen 2 The LHB (LHB # 11) corresponding to the section (pen pressure sensing period) in which the touch display apparatus 100 recognizes the pen pressure of the second active pen Pen 2 and the first active pen Pen (LHB) corresponding to the section (pen data transmission section) in which the touch display apparatus 100 recognizes the pen-related additional information of the first active pen (Pen 1) by outputting data including the pen- And the second active pen Pen 2 outputs data including the pen-related additional information so that the touch display device 100 displays the pen-related additional information of the second active pen Pen 2 To may include LHB (LHB # 15) for the section (pen data transmission interval).

According to the driving situation according to the example of FIG. 23B, by using an example of setting the values of the seven detailed fields C1 to C7 in the third portion CNTP in FIG. 21, the beacon signal (LHB # BCON) may be set to FP1200130, and the beacon signal (BCON) transmitted from LHB # 9 may be set to FP1200130.

According to the example of FIG. 23B, one frame period is divided into 16 display periods D and 16 LHBs (LHB # 1 to LHB # 16).

The 16 LHBs (LHB # 1 to LHB # 16) may include two or more LHBs (LHB # 2, LHB # 10) for sensing the position of the pen touch by two or more active pens Pen 1 and Pen 2 .

According to the above-described LHB configuration and LHB driving, optimized display performance and sensing performance can be provided, and the pen position, pen pressure, pen additional information, and the like can be efficiently recognized through LHB driving. Particularly, it is possible to enhance the multi-pen recognition performance.

For effective multi-pen recognition, a section that can acquire the pen signal more than once in one frame period is needed.

Accordingly, in the touch system according to the present exemplary embodiment, the display period and the LHB are repeated for one frame period, and the pen signals output from the two or more active pens are displayed in two or more LHBs among a plurality of LHBs in one frame period May be emitted to the panel (110). Accordingly, the touch circuit TC can sense the pen touch by two or more active pen based on the pen signals.

In addition, the first circuit (ROIC) included in the touch circuit TC according to the present embodiments operates in a plurality of blank periods within one frame period, and during two or more different LHBs in one frame period, (A touch driving signal, a touch panel driving signal) to the touch panel 110, and can detect the pen signals output from the two or more active pen through the display panel 110.

Accordingly, the second circuit (TCR) included in the touch circuit (TC) according to the present embodiments can sense the pen touch by two or more active pen based on the pen signals detected by the first circuit (ROIC) .

The pen recognition method of the touch display apparatus 100 according to the present embodiment is a method of supplying a driving signal to a display panel 110 in which a plurality of touch electrodes TE are arranged, And a second step of sensing a touch by a finger or sensing a pen touch by an active pen on the basis of the signal detected in the first step, The touch display apparatus 100 operates in a plurality of LHBs existing within one frame period and supplies a driving signal to the display panel 110 during two or more different LHBs in one frame period, The touch panel 100 can detect the pen touch by two or more active pen based on the pen signals in the second step.

According to the above-described multipen recognition method, during the blank interval (for example, LHB) in which one active pen outputs a pen signal to the display panel 110 through one or more pen tips P / A, The pen signal can be output to the display panel 110. [ Thus, during the same blank interval, pen signals output from more than one active pen can be emitted to the display panel 110. [

As described above, the touch display device 100 can acquire the pen signal more than once in one frame period, and can provide a quick and effective multi-pen recognition process.

As described above, for effective multi-pen recognition, two or more LHBs in which pen signals output from two or more active pens are radiated to the display panel 110 among a plurality of LHBs in one frame period are transmitted to two or more active pens (LHB # 2, LHB # 6, LHB # 10, and LHB # 14 in FIG. 23B) for sensing at least one of the position and tilt of the pen.

According to the above description, the touch display apparatus 100 can acquire the pen signal output from two or more active pens two or more times within one frame period, thereby sensing the position and / or tilt of two or more active pens.

The intervals between the LHBs (LHB # 2, LHB # 6, LHB # 10, LHB # 14 in FIG. 23B) corresponding to the pen position / tilt sensing section for sensing the position and / or tilt of the active pen have.

Accordingly, the user can sense the pen touch positions accurately corresponding to the locus touched by using the active pen without distortion.

Referring to FIGS. 22 to 23B, a plurality of LHBs included in one frame period may be generated by transmitting a beacon signal (BCON) including pulses indicative of predetermined codes from a beacon signal (BCON) transmitted from the display panel 110 to two or more active pens And one or more LHBs (e.g., LHB # 1, LHB # 9) corresponding to the transmission interval.

Through the transmission of the beacon signal BCON, the touch display device 100 displays one or more LHBs (e.g., LHB # 2 to LHB # 8) coming after the LHB (LHB # 1) to which the beacon signal BCON is transmitted, It is possible to inform the active pen of how the driving in the touch display device 100 is to be performed. Accordingly, the active pen can operate in conjunction with the touch display device 100 by viewing the beacon signal BCON. Accordingly, correct pen recognition (pen touch sensing) can be performed.

The beacon signal BCON may be supplied to all the touch electrodes TE arranged in the entire area of the touch panel TSP.

The beacon signal BCON is supplied to the touch panel TSP and is transmitted to the active pen. The beacon signal BCON can be regarded as a kind of a touch panel drive signal in that it is supplied to the touch panel TSP.

Comparing FIG. 22 and FIGS. 23A and 23B, it can be seen that the third part CNTP is set to 0 (decimal) in the beacon signal BCON in the pen search mode. Therefore, the beacon signal BCON in the pen search mode and the beacon signal BCON in the pen mode may be different.

Accordingly, not only the touch display device 100 according to the present embodiments, but also the active pen can operate in one of a pen search mode and a pen mode according to the beacon signal BCON.

According to the above description, the touch display device 100 and the active pen share the operation modes through the beacon signal BCON and can accurately perform an operation corresponding to the operation mode. Accordingly, the touch display device 100 and the active pen can perform the pen recognition driving operation through accurate interlocking operation.

The beacon signal BCON may include panel information (e.g., panel ID, panel status, panel type, etc.) and drive control information.

Herein, the panel information is also referred to as touch panel information. For example, the panel information includes panel ID, panel type information (e.g., add on type, in-cell type, on- Etc.), panel status information, and the like.

The drive control information may include information shown in the beacon signal format of FIG.

Through the beacon signal BCON, the touch display device 100 can inform the active pen of the information about the touch panel TSP and the operation related to the pen touch sensing. Accordingly, an interlocking operation for pen touch sensing (pen recognition) between the touch display device 100 and the active pen can be accurately performed.

As shown in FIG. 21, a frequency of a plurality of pen pulses constituting a pen signal output from the active pen may be defined by a beacon signal BCON.

Thus, the active pen can generate the pen signal having the frequency at which the touch circuit TC can detect and process the signal. Accordingly, the touch circuit (TC) can correctly receive and recognize the pen signal having the frequency that can be recognized and processed by the touch circuit (TC) through the touch panel (TSP), so that accurate pen recognition can be performed.

As shown in FIG. 21, the number of pulses of the plurality of pen pulses constituting the pen signal output from the active pen may be defined by a beacon signal BCON.

Thus, the active pen can generate the pen signal having the number of pulses capable of signal detection and signal processing by the touch circuit TC. Accordingly, the touch circuit (TC) can correctly receive and recognize the pen signal having the number of pulses that can be recognized and processed by the touch circuit (TC) through the touch panel (TSP), thereby enabling accurate pen recognition.

21, the number of LHBs existing between the current beacon signal transmission period (for example, LHB # 1) and the next beacon signal transmission period (for example, LHB # 9) is defined by the beacon signal BCON .

Accordingly, the active pen can accurately know how long the driving operation according to the driving control information learned through the beacon signal (BCON) is to proceed, so that the active pen can operate correctly with the touch display device 100 .

On the other hand, there may be at least one LHB between the current beacon signal transmission period (for example, LHB # 1) and the next beacon signal transmission period (for example, LHB # 9) in which pen signals are not emitted from the active pen.

Thus, the power consumption of the active pen and the touch display apparatus 100 can be reduced.

23B, a plurality of LHBs in one frame period are divided into a period in which a beacon signal BCON is transmitted from the touch panel TSP of the touch display device 100 to two or more active pen (LHB # 1) corresponding to the LHB (LHB # 1), a pen signal is output from the two or more active pen to detect at least one of a position and a tilt with respect to two or more active pens in the touch display apparatus 100 (LHB # 2, LHB # 6, LHB # 4, LHB # 5, and LHB # 8) corresponding to the LHB # / tilt sensing period and the full tone mode period.

In addition, a plurality of LHBs in one frame period can output a pen signal indicating the pen pressure in two or more active pens, thereby sensing the pressure (pen pressure, pressure) of two or more active pens in the touch display device 100 One or more LHBs (LHB # 3) corresponding to a section (pen pressure sensing section) corresponding to one or more active pens and pen additional information (e.g., pen ID, pen button input information, One or more LHBs (LHBs # 7) corresponding to a section (pen data transmission section) in which data (pen data) including the data (pen data) included in the pen data transmitted to the touch display apparatus 100 is transmitted.

The section capable of sensing at least one of the position and the tilt with respect to the two or more active pens includes a pen position / tilt sensing section (LHB # 2, LHB # 6) for local sensing and a full tone mode section LHB # 4, LHB # 5, LHB # 8).

The pen additional information included in the data (pen data) includes, for example, at least one of a pen ID and a pen button input information for the active pen and a check sum for checking a bit error of the pen additional information .

According to the above description, in one frame period, the touch display apparatus 100 can accurately recognize the position and / or the tilt for two or more active pens, and the pressure and / or pen additional information . ≪ / RTI >

23B, in each of four LHBs (LHB # 2, LHB # 6, LHB # 10, and LHB # 14) for sensing the position and / or tilt of two or more active pens, It is possible to find the corresponding position through time division driving and sensing.

For example, in order to sense the position and / or tilt of the first active pen (Pen 1), the second active pen (Pen 2), the first active pen The position and / or tilt for the first active pen (Pen 1) is sensed in the LHB # 2 and LHB # 10 intervals, and the position for the second active pen (Pen 2) found through the pen scan mode or the full scan mode in the pen mode, / / Tilt can be sensed in the LHB # 6 and LHB # 14 sections.

At this time, the LHB section for sensing the position and / or tilt for the first active pen (Pen 1) may be set at a uniform interval. Likewise, the position for the second active pen Pen 1 and / or the LHB section for sensing the tilt may be set at uniform intervals. This is because, if the positions of the active pen and / or the intervals for sensing the tilt are made the same, accuracy of touch sensing can be improved.

For another example, in order to sense the position and tilt of the first active pen (Pen 1), the second active pen (Pen 2), the third active pen (Pen 3), and the fourth active pen (Pen 4) 2 senses an area corresponding to the position of the first active pen Pen 1 found through the full scan mode in the pen search mode or the pen mode, and detects the pen scan mode or the full scan mode in the pen mode in the LHB # And detects the area corresponding to the position of the second active pen Pen2 detected through the full scan mode in the pen mode or the pen scan mode in the LHB # And senses an area corresponding to the position of the fourth active pen Pen4 found through the full scan mode in the pen search mode or the pen mode in the LHB # 14 section.

Referring to FIG. 23B, the position and / or orientation of each active pen in each of four LHBs (LHB # 2, LHB # 6, LHB # 10, and LHB # 14) for sensing the position and / And / or tilt can be detected through simultaneous drive and sensing.

For example, four LHBs (LHB # 2, LHB # 6, LHB # 10, and LHB # 14) are used to sense the position and tilt of the first active pen Pen 1 and the second active pen Pen 2 (The same or different areas) corresponding to the positions of the two active pens Pen1 and Pen2 found through the full scan mode in the pen search mode or the pen mode can be simultaneously sensed. At this time, when the two active pens Pen1 and Pen2 are located in the same local sensing area, the touch display device 100 displays the pen ID (pen) included in the pen signal (data) emitted from the two active pens Pen1 and Pen2 The two active pens Pen 1 and Pen 2 can be distinguished.

24A is an exemplary diagram of a timing diagram of panel drive and pen drive in a touch system according to the present embodiments.

24A illustrates panel driving and pen driving during eight LHBs. Touch electrodes arranged on the touch panel TSP are divided into three groups (Group 1, Group 2, Group 3, actually, (Which may be many).

Referring to FIG. 24A, in eight LHBs (LHB # 1 to LHB # 8), LHB # 1 is a beacon period and LHB # 2 and LHB # 6 are used to sense the position and / or tilt of one or more active pen LHB # 3 and LHB # 7 are pen pressure sensing periods for recognizing the pressure (pressure) for one or more active pen, and LHB # 4, LHB # 5 and LHB # Full-tone mode section that fully-senses finger and / or touches to one or more of the active pen in the entire area.

Therefore, during the beacon period LHB # 1, the beacon signal BCON expressed by FP1200120 can be applied to all regions of the touch panel TSP (i.e., all the touch electrodes).

According to another embodiment, a beacon signal (BCON) represented by FP1200120 may be applied to a part of the area of the touch panel TSP (that is, a region corresponding to the position of some touch electrodes or the detected active pen). For example, a beacon signal (BCON) may be applied only to a touch electrode located in even-numbered columns among the touch electrodes of the touch panel, or a beacon signal (BCON) may be applied only to a touch electrode located in an odd-numbered column. Alternatively, the beacon signal BCON may be applied only to the predetermined touch electrode group. Alternatively, the touch electrode of the touch panel may be divided into a plurality of touch groups, and a beacon signal may be applied to one touch electrode group during a first beacon signal period and a beacon signal may be applied to a second touch beacon group period.

Accordingly, one or two or more active penes receive the beacon signal BCON, and thus various kinds of information including the panel information and the drive control information (e.g., the touch panel type, the LHB drive information, the multiplexer drive information, ).

The beacon signal may be, for example, a direct sequence spread spectrum (DSSS) signal.

Each of the remaining LHBs (LHB # 2 to LHB # 8) other than the beacon period LHB # 1 can be time-divided into an up-link period in which the panel is driven and a down-link period in which the pen is driven. This will be described again with reference to FIGS. 34 and 35. FIG.

The ping signal PNG may be applied to all the regions of the touch panel TSP (i.e., all the touch electrodes) during the up-link period of each of the LHB # 2 and the LHB # 6 corresponding to the pen position / tilt sensing period . Accordingly, one or more active pen may receive the ping signal PNG.

(LHB # 2 and LHB # 6) corresponding to the pen position / tilt sensing period, all the areas of the touch panel TSP (i.e., Mode touch electrode and a driving signal of a DC type having a constant voltage is applied to each of the at least one active pen and each of the at least one active pen is connected to a touch panel TSP using two or more pen tips (Tip 1 and Tip 2) (Output).

Here, for example, each active pen may emit a pen signal by sequentially using two or more pen tips (Tip 1 and Tip 2) for tilt sensing, and may transmit two or more pen tips (Tip 1, , Tip 2) may be used simultaneously to emit a pen signal or to emit a pen signal using only one of two or more pen tips (Tip 1, Tip 2).

The ping signal PNG can be applied to all areas of the touch panel TSP (i.e., all the touch electrodes) during the up-link period of each of the LHB # 3 and the LHB # 7 which are pen pressure sensing sections. Accordingly, one or more active pen may receive the ping signal PNG.

(I.e., the mode touch electrode) of the touch panel TSP for each of the LHB # 3 and the LHB # 7 in the pen pressure sensing period, the down-link interval immediately following the uplink interval or the down- A driving signal of a DC type having a constant voltage is applied to the touch panel TSP, and each of the one or more active pens transmits a pen signal corresponding to data including information on the pen tip pressure (i.e., pressure, pressure) (Output).

Here, the pen signal corresponding to the data expressing the pressure information can be expressed in three states (positive phase state, reverse phase state, DC state). This has been described with reference to FIG. 10 and will be described later in detail with reference to FIG.

During the up-link period of each of the LHB # 4, LHB # 5 and LHB # 8 in the full tone mode period, the ping signal PNG may be applied to all the regions of the touch panel TSP (i.e., all the touch electrodes) . Accordingly, one or more active pen may receive the ping signal PNG.

In all of the areas of the touch panel TSP (i.e., in the LHB # 4, the LHB # 5, and the LHB # 8 in the full tone mode section) during the next or following down- (LFD signal, touch panel drive signal) having a predetermined frequency and composed of a plurality of pulses may be applied to the touch electrode.

Accordingly, each active pen radiates (outputs) the pen signal to the touch panel TSP through the two or more pen tips (Tip 1 and Tip 2) in response to the drive signal (LFD signal, touch panel drive signal) .

24B is a diagram showing a circuit structure for supplying three touch panel drive signals (beacon signal, ding signal, LFD signal, DC signal) to the touch panel in the touch system according to the present embodiments.

(BCON, PNG, and LFD signals), which are three types of driving signals, are supplied to the touch panel TSP in accordance with the driving timing for touch sensing by a finger or the like and pen touch sensing by the active pen do.

The touch circuit SRIC includes a beacon / finger signal generating section 2410 for generating a beacon signal BCON and a finger signal PNG, a pen / finger touch sensing section 2420 for outputting an LFD signal, And a switch SW for electrically connecting one of the beacon / finger signal generating unit 2410 and the pen / finger touch sensing unit 2420 to the multiplexer (MUX) according to the information.

For example, in FIG. 24A, in the LHB # 1 corresponding to the beacon period, the switch SW electrically connects the beacon / ping signal generator 2410 and the multiplexer (MUX). The beacon signal BCON generated by the beacon / ping signal generator 2410 is output to the signal line SL connected to the touch electrode TE through the multiplexer MUX.

24A, the switch SW electrically connects the beacon / ping signal generator 2410 and the multiplexer (MUX) in the up-link period (ping interval) such as LHB # 2. Accordingly, the ping signal PNG generated in the beacon / ding signal generator 2410 is output to the signal line SL coupled to the touch electrode TE through the multiplexer MUX.

In FIG. 24A, in the down-link section such as LHB # 2, the switch SW electrically connects the pen / finger touch sensing section 2420 and the multiplexer (MUX). Accordingly, the LFD signal output from the pen / finger touch sensing unit 2420 is output to the signal line SL connected to the touch electrode TE through the multiplexer MUX. The pen / finger touch sensing unit 2420 receives a signal indicating a change in capacitance through the signal line SL connected to the touch electrode TE to which the LFD signal or the DC signal is applied, or a pen signal radiated from the active pen Can be detected.

The beacon / ping signal generating unit 2410 generates a pseudo noise (BCON) and a ping signal (PNG) in the form of a spread spectrum modulated signal (e.g., a DSSS signal) A pseudo noise code generator for generating a pseudo noise code, a multiplier for multiplying and modulating pseudo noise codes by the codes to be transmitted, and a multiplier for converting the modulated signal into an analog signal to generate a pen signal (BCON, PNG And a digital-to-analog converter for outputting a digital signal.

The active pen may include circuitry that includes an analog-to-digital converter, a multiplier, a pseudo-noise code generator, and the like, to demodulate the beacon signal BCON and the ping signal PNG of the spread-spectrum modulation signal type.

On the other hand, some features of the pen search mode of Fig. 22 and the pen mode of Figs. 23A and 23B will be described once again.

In the pen search mode, a beacon signal BCON is periodically applied to all the touch electrodes disposed on the touch panel TSP, and the beacon signal BCON can be transmitted from the touch panel TSP to one or more active pen.

In this pen search mode, a plurality of LHB sections corresponding to the full scan mode (full tone mode) section can be processed.

That is, in the pen search mode, one or two or a predetermined number of LHBs of all the LHBs in one frame period may be a beacon period, and the remaining LHBs may be a full scan mode (full tone mode) period.

When one frame period includes 16 LHBs, that is, for 16 LHB drives, 16 LHBs are divided into 2 LHBs corresponding to the beacon period and 14 LHBs corresponding to the full scan mode (full tone mode) . ≪ / RTI >

At this time, the touch electrodes can be grouped to sense some groups at the same time.

During one frame period (one display frame period), a full scan mode (full tone mode) is performed through 14 LHBs, and a touch report can be performed once or two times or more can be reported. That is, the process of sensing the touch position in the entire screen region may be performed only once or twice or more during one frame period.

In the pen search mode, a ping signal (PNG) is supplied to the touch panel (TSP) in all LHB sections, a ping signal (PNG) is supplied to the touch panel (TSP) only in some LHB sections, PNG) may not be supplied to the touch panel TSP.

In pen search mode, full scan mode (full tone mode) may be performed in all LHB sections, but full scan mode (full tone mode) may be performed in some LHB sections.

In the pen mode, the one-frame interval mode LHB includes at least one LHB corresponding to a beacon period, and at least one LHB corresponding to a pen position / tilt sensing interval for sensing at least one of a position and a tilt for one or more active pen Data including a plurality of pen additional information for sensing LHB and a plurality of pieces of pen additional information (e.g., pressure, pen ID, button information, check sum information, etc.) for one or more active pen is transmitted from the active pen to the touch panel One or more LHBs corresponding to data segments transmitted in a full scan mode (full tone mode), and one or more LHBs undergoing a full scan mode (full tone mode).

In the pen mode, in each LHB corresponding to the full scan mode (full tone mode), the ping signal PNG and the LFD signal (AC type driving signal) are sequentially supplied to the touch panel TSP and transmitted to the active pen .

When one frame section includes 16 LHBs, that is, 16 LHB drives, 16 LHBs are divided into two LHBs corresponding to the beacon interval, four LHBs corresponding to the pen position / tilt sensing interval, Two LHBs corresponding to a pen pressure sensing period, two LHBs corresponding to a data transmission period for transmitting data including pen additional information other than pressure, and six LHBs corresponding to a full scan mode (full tone mode) LHB (see FIG. 23B).

At this time, the touch electrodes can be grouped to sense some groups at the same time.

In the pen mode, the full scan mode (full tone mode) is performed through six LHBs during one frame period (one display frame period), and one touch report can be made. That is, in the pen mode, the process of sensing the touch position in the entire screen area for one frame period may be performed only once.

And each of the plurality of pen additional information may be transmitted in a different LHB for each information type.

For example, the pressure among the plurality of pen additional information may be transmitted from the active pen to the touch panel via one or more separate LHBs, and the remaining pen additional information (e.g., pen ID, button information, May be transmitted together via one or more LHBs.

Also, the pen search mode may be performed for a predetermined number of frame intervals regardless of whether the active pen is searched or not.

As described above, in the pen mode, one frame period includes a beacon period, a pen position / tilt sensing period, a pen pressure sensing period in which data including pressure information is sensed in order to sense the pressure in the pen additional information, (Full tone mode) section in which data including a plurality of pen additional information including other pen additional information (e.g., pen ID, button input information, check sum information, etc.) Or may include only some types of intervals.

In one frame period, the pen position / tilt sensing period, the pen pressure sensing period, the data transmission period, and the number and order of the full scan mode period may be variously changed.

The pen position / tilt sensing section, the pen pressure sensing section, the data transmission section, and the full scan mode section may exist or may be present in one frame period.

The LHB driving method for determining the order in which the respective LHBs in one frame section are allocated in what order and the transmission method and the signal format of the panel and pen driving related signals in each LHB are defined as protocols , This protocol may be predetermined between the touch display device 100 and the active pen, or may be transmitted from the touch display device 100 to the active pen through a beacon signal or the like.

The protocol may be adaptively changed according to various conditions such as the driving environment of the touch system, the presence and the number of the active pen, the driving condition and condition of the panel or the active pen.

Alternatively, if one or a predetermined number of active pens are detected, the pen search mode may be interrupted and the mode may be switched to the pen mode.

If the touch frequency (touch sensing rate or touch report rate) is A Hz in the pen search mode and B Hz in the pen mode, A and B may be the same, and A and B may be different.

For example, in the pen search mode, the touch frequency A Hz may be lower than the touch frequency B Hz in the pen mode. That is, in the pen search mode, the touch report rate may be slower than the touch report rate in the pen mode.

As a specific example, when the display frequency is 60 Hz, the touch frequency for the finger touch in the pen search mode is 120 Hz, and the touch frequency for the finger touch in the pen mode may be 60 Hz.

For example, when the pen search mode is performed, a communication interval related to the active pen is required, so that the interval related to the finger touch is reduced so much that the number of sensing times for the finger touch is reduced and the touch report rate for the finger touch can be reduced .

FIG. 25 is a diagram illustrating characteristics related to recognition of the position and / or tilt, pressure, and data of the active pen when the pen touch sensing is performed in the touch system according to the present embodiments.

As described above, the touch display device 100 according to the present embodiments recognizes the position and / or tilt, pressure, and data (pen additional information) with respect to the active pen.

The touch display apparatus 100 and the active pen can adaptively drive according to the importance setting by setting the positions of the active pen and / or the tilt, the pressure, and the data (pen additional information) .

Referring to the example of Fig. 25, it is assumed that the importance of recognition of the position and / or tilt with respect to the active pen is set to the highest, the importance of recognition of the pressure to the active pen is set to be next higher, It is possible to set the importance of recognition to the lowest.

In the case of the importance setting, the number of LHBs for recognizing the position and / or the tilt for the active pen is set to a maximum in one frame period, and the number of LHBs for recognizing the pressure for the active pen in one frame period is set to And the number of LHBs for recognizing data (pen additional information) for the active pen in one frame period can be set to the smallest.

Further, in order to recognize the accurate pen touch position according to the locus of the user touching the active pen, the intervals of the LHBs for recognizing the pen position can be set uniformly.

The panel and pen drive for sensing the position of the active pen and the panel and pen drive for sensing the tilt with respect to the active pen are almost the same except that the output method of the pen signal is only partially different . Thus, in the present specification, sensing the position (or tilt) of the active pen may imply sensing the tilt (or position) of the active pen.

The pen signal output from the active pen is data for sensing a pen position and / or tilt sensing signal and various pen additional information (e.g., pressure, pen ID, button input information, check sum information, etc.) Can be classified.

The signal for sensing the pen position and / or tilt is a signal for which no information is printed. The touch display apparatus 100 detects an electric characteristic (e.g., voltage, current, capacitance, signal intensity, etc.) related to the signal to find out the pen position and / or tilt.

A pen signal corresponding to data for sensing various kinds of pen additional information (e.g., pressure, pen ID, button input information, check sum information, etc.) is a signal carrying the determined information. The touch display device 100 can check data and detect various pen additional information displayed on the data through signal demodulation.

Fig. 26 is an exemplary diagram showing a drive signal in the touch display device 100 according to the present embodiments.

Referring to FIG. 26, the touch circuit TC is connected to a touch panel TSP for touch sensing by a passive touch input pointer such as a finger and pen touch sensing by an active touch input pointer such as an active pen, Can be supplied.

This driving signal is a signal for driving the touch panel TSP for touch sensing and pen touch sensing and may be a touch panel driving signal or a touch driving signal TDS or a touch driving voltage Vtouch or a load free driving signal ), And the like.

This driving signal is supplied from the touch circuit TC to a touch panel (TSP, an external type bonded to the outside of the display panel or embedded in the display panel) and is contacted or non-contacted with the touch panel TSP It can be transferred to the inside of the active pen through the pen tip of the active pen.

As shown in Fig. 26, the driving signal may be an AC-type signal having a plurality of pulses or a DC-type signal having a constant voltage.

The AC type driving signal is a signal swinging between a high level voltage and a low level voltage and may be composed of a plurality of pulses having one or two or more frequencies. In the pulse shape, a square wave, a triangle wave A triangle wave, a sine wave, a trapezoidal wave, and the like.

For example, an AC type driving signal is generated by sensing the position of the touch by the finger in the entire screen area (full sensing area), searching the active pen in the entire screen area (full sensing area) (LHB # 2 to LHB # 8 in FIG. 22, LHB # 4, LHB # 5, LHB # 8, LHB # 12 and LHB # 8 in FIGS. 23A and 23B) 13, LHB # 16) can be used to drive the touch panel TSP.

For example, the DC-type drive signal includes sections for recognizing the position, tilt, pressure, and pen additional information (data) for the active pen in a partial screen area (local sensing area) The touch panel TSP can be used to drive the touch panel TSP in the LHB # 2, LHB # 3, LHB # 6, LHB # 7, LHB # 10, LHB # 11, LHB # 14 and LHB # 15.

When the driving signal of the AC type is used, it is possible to more accurately sense the touch position of the finger and the position of the active pen in the entire area of the screen. When using the DC type driving signal, the position of the active pen, , Pressure, pen additional information (data), and the like.

Fig. 27 is an exemplary diagram of a pen signal in the active pen according to the present embodiments. Fig.

As shown in FIG. 27, the pen signal generated and output from the active pen according to the present embodiments may be a full tone, a tilt tone, or the like.

For example, the full-tone pen signal may be a pen signal for sensing the pen position in the entire screen area (full sensing area). When the AC type driving signal is supplied to the touch panel TSP (LHB # 2 to LHB # 8 in FIG. 22, LHB # 4, LHB # 5, LHB # 8, LHB # 12, LHB # 13 and LHB # 16 in FIGS. 23A and 23B) (Tip 1, Tip 2) of the active pen at the same time.

When the active pen is in the hover mode (non-contact mode) capable of pen touch sensing even when the active pen does not touch the touch panel (TSP), the same pen signal is output simultaneously in both tips (Tip 1 and Tip 2) of the active pen . The pen signal may be outputted only in a part of two or more tips (Tip 1, Tip 2) of the active pen when the active pen is in the contact mode in which the pen touch sensing can be performed only when the active pen touches the touch panel (TSP).

For example, a pen signal of a tilt tone (Full Tone) may be a pen signal for sensing a pen position and / or a pen tilt in a part of the screen region (local sensing area) (LHB # 2, LHB # 6, LHB # 8, LHB # 10, LHB # 14 in FIGS. 23A and 23B), two or more tips 1, and Tip 2).

In addition, in a section for transmitting the pressure to the active pen and a section for transmitting data (pen additional information) to the active pen, the pen signal is not a form in which the pulses are repeated regularly such as a full tone and a tilt tone, Pressure, and a signal of a specific pattern of pulses representing the pen additional information.

As described above, the output position (pen tip) and timing of the pen signal can be changed according to the type (AC, DC) of a driving signal for driving the touch panel TSP.

In addition, as described above, when the driving signal for driving the touch panel TSP is an AC type signal including a plurality of pulses, the pen signal may be simultaneously output from two or more pen tips (P / A) It can be output only on some of the pen tips (P / A).

When the driving signal for driving the touch panel TSP is a DC type signal having a constant voltage, pen signals may be sequentially output from two or more pen tips P / A.

Accordingly, the active pen can control its own driving operation by checking the type of the driving signal received through the touch panel TSP.

28 is a diagram showing a relationship between a touch panel (TSP) and an active pen in a tilt tone mode (pen position / tilt sensing section and corresponding mode) and a full tone mode (full tone mode section and corresponding mode) FIG. 29 is a drive timing diagram between the touch panel (TSP) and the active pen in the data mode (data transmission period and corresponding mode) in the touch system according to the present embodiments.

28 and 29, in the first half (corresponding to the up-link interval in FIG. 34) of each of two or more LHBs in which a pen signal is output from one or more active pen, a ping signal (Ping Signal, PNG) is transmitted to one or more active pens on the touch panel (TSP) or the display panel (110) containing the same.

Here, the ping signal PNG is a signal to be supplied to the touch panel TSP and transmitted to the active pen, and can be regarded as a kind of a touch panel drive signal in that it is supplied to the touch panel TSP.

Thereafter, a driving signal is supplied to the touch panel TSP or the display panel 110 having the touch panel TSP, and the pen signal may be output from one or more active pens.

The pen signal may be output from one or more active pens after a predetermined time Td elapses from the last pulse among the pulses constituting the ping signal PNG.

The above-mentioned ping signal is a signal for synchronizing the touch panel (TSP) and the active pen. The active pen generates a pen signal synchronized with a driving signal supplied to the touch panel TSP or an operation signal in the touch driving circuit ROIC or an integrated driving chip SRIC including the touch driving circuit ROIC, Can be output.

28 and 29, MUX 1 denotes a first channel of each multiplexer included in a touch driving circuit (ROIC) or an integrated driving chip (SRIC) including the touch driving circuit (ROIC). The MUX 2 denotes the second channel of each multiplexer included in the touch driving circuit (ROIC) or the integrated driving chip (SRIC) including the touch driving circuit (ROIC).

During the MUX 1 driving period, the driving signal output from the touch circuit TC is applied to the touch panel TSP through the first channel of each multiplexer, and the tilt tone or full tone pen signal output from the active pen is touched May be radiated to the panel TSP and received by the touch circuit TC through the first channel of each multiplexer.

During the MUX 2 driving period, the driving signal output from the touch circuit TC is applied to the corresponding touch electrodes in the touch panel TSP through the second channel of each multiplexer, and the tilt tone or the pull Tone pen signal may be radiated to the touch panel TSP and received by the touch circuit TC through the second channel of each multiplexer.

During one LHB, driving and signal reception (sensing) may be performed through one channel of each multiplexer, and driving and signal reception (sensing) through two channels of each multiplexer may be sequentially performed.

FIG. 28 and FIG. 29 are timing diagrams showing a case in which driving and signal reception (sensing) are sequentially performed through two channels of each multiplexer during one LHB.

28, in the tilt tone mode (corresponding to the pen position / tilt sensing section) and the full tone mode (corresponding to the full tone mode section), the active pen transmits the ping signal PNG through the touch panel TSP, The active pen can output a tilt tone or a full tone pen signal after a predetermined time Td has elapsed since the last pulse of the ping signal PNG was confirmed.

29, when a ping signal PNG is transmitted to the active pen through the touch panel TSP in the data mode (data transmission period and corresponding mode), the active pen confirms the last pulse of the ping signal PNG The pen signal corresponding to the data including the pen additional information can be output after the elapse of the predetermined time Td from the time point.

The pen signal may include a plurality of pen pulses.

The pen signal may be a first state that is in an in-phase relationship with an operation signal of the touch circuit TC or a drive signal applied to the touch panel TSP, an operation signal of the touch circuit TC, Lt; / RTI > may be in a second state that is in an inverse < RTI ID = 0.0 >

These pen signals can be used in the tilt tone mode (pen position / tilt sensing period and corresponding mode) and the full tone mode (full tone mode period and corresponding mode) in Fig.

As described above, since the pen signal is generated in response to the operation signal of the touch circuit TC or the drive signal applied to the touch panel TSP, the touch circuit TC outputs the pen signal emitted to the touch panel TSP Can be accurately detected.

On the other hand, some of the plurality of pen pulses included in the pen signal are in a first state (in-phase) with the operation signal of the touch circuit TC or the drive signal applied to the touch panel TSP ('0') or a second state ('1') that is in an inverse relationship with the operation signal of the touch circuit TC or the drive signal applied to the touch panel TSP, or a third state '-').

According to this, various information can be expressed by using three states ('0', '1', '-') of the pen signal. Such an example is shown in Fig.

30 is a diagram showing pulse patterns of a pen signal in the touch system according to the present embodiments.

Based on the operation signal of the touch signal (TC, that is, the integrated driving chip (SRIC) including the touch driving circuit (ROIC)) or the driving signal applied to the touch panel (TSP) ('0', '1', '-').

For example, suppose the pen signal is a two-digit value and you combine the three states ('0', '1', '-') to get 00, 01, 0-, 10, Numerous pen signals can be created that represent various information, such as 0, -1, -.

In Fig. 30, a pen signal including information represented by "00 ", a pen signal including information represented by" 10 ", and a pen signal including information represented by "0- "

These pen signals can be used in the data mode (data transmission interval and corresponding mode) in Fig. 29 in which various pen additional information (data) is transmitted.

As described above, since the pen signal is generated in response to the operation signal of the touch circuit TC or the drive signal applied to the touch panel TSP, the touch circuit TC outputs the pen signal emitted to the touch panel TSP Can be accurately detected. In addition, since the pulse state of the pen signal is made by a combination of three states ('0', '1', '-'), Information can be conveyed.

On the other hand, in connection with the transmission of the ping signal PNG, the ping signal PNG is a synchronization signal supplied to the touch panel TSP and transmitted from the touch panel TSP to the active pen. That is, the ping signal PNG may be supplied to all the touch electrodes TE disposed on the touch panel TSP and may be transmitted from all the touch electrodes TE to the active pen.

The ping signal PNG may be supplied to the touch panel TSP in a section separate from the section in which the beacon signal BCON is supplied to the touch panel TSP.

In this case, the ping signal PNG may be supplied to the touch panel TSP in all the LHBs or some LHBs of the LHBs other than the LHB to which the beacon signal BCON is supplied to the touch panel TSP, .

The ping signal PNG may be supplied to the touch panel TSP along with the beacon signal BCON in the LHB to which the beacon signal BCON is supplied to the touch panel TSP, (TSP).

After the elapse of a predetermined time (e.g., one pulse time, approximately several m sec or several 占 sec) after the ping signal PNG is supplied to the touch panel TSP, the panel driving signal (LFD signal), DC type driving signal) can be supplied to the touch panel TSP. This is because the active pen receives the ping signal (PNG) and has time for signal recognition and processing.

While the ping signal (PNG) is supplied to the touch panel (TSP) and delivered to the active pen, the active pen may not emit (output) any signal.

FIGS. 31 and 32 are views showing intervals of LHBs corresponding to the pen position sensing period in the touch system according to the present embodiments.

31, the LHBs LHB # 2, LHB # 6, LHB # 10, and LHB # corresponding to the pen position / tilt sensing period sensing the position (and / or tilt) 14 may be arranged at regular intervals.

That is, two LHBs (LHB # 2 and LHB # 6, LHB # 6 and LHB # 10, LHB # 10 and LHB # 10) corresponding to the pen position / tilt sensing section for sensing the position (and / 14, LHB # 14 and LHB # 2 in the next frame interval) is equal to 3 LHB.

This will be described in more detail with reference to FIGS. 31 and 32. FIG.

The first LHB (LHB # 2), the second LHB (LHB # 2) corresponding to three different LHBs in which the display panel 110 receives the pen signal from the active pen among the plurality of LHBs existing in one or two or more frame periods, 6) and the third LHB (LHB # 10) exist, the touch circuit TC outputs the pen signal output from the active pen to the display panel 110 during the first LHB (LHB # 2) Detects the position of the active pen, receives the pen signal output from the active pen through the display panel 110 during the second LHB (LHB # 6), detects the position of the active pen, LHB # 10), the pen signal output from the active pen is received through the display panel 110 to sense the position of the active pen.

The position P1 of the active pen detected through the first LHB (LHB # 2), the position P2 of the active pen detected through the second LHB (LHB # 6), the position of the third LHB (LHB # (LHB # 2) and the second LHB (LHB # 6) and the second LHB (LHB # 2), even if at least one of the active pen positions 6) and the third LHB (LHB # 10) may be the same.

The actual position P1 of the active pen in the first LHB (LHB # 2), the actual position P2 of the active pen in the second LHB (LHB # 6) and the actual position P2 of the active pen in the third LHB (LHB # (LHB # 2) and the second LHB (LHB # 6) and the second LHB (LHB # 6) and the third LHB (LHB # 10) may be the same.

Accordingly, the user can sense the pen touch positions accurately corresponding to the locus touched by using the active pen without distortion.

33 is a diagram illustrating LHB driving for power consumption reduction in the touch system according to the present embodiments.

30, out of two or more LHBs (LHB # 2 to LHB # 8) existing between the first LHB (LHB # 1) and the second LHB (LHB # 9) At least one LHB (LHB # 5, LHB # 6, LHB # 7, LHB # 8) may be present.

Thus, the power consumption of the active pen and the touch display apparatus 100 can be reduced.

FIG. 34 is a diagram for explaining an example of a case where one LHB is time-divided into an uplink section (ULINK) and a downlink section (DLINK) in a touch system according to the present embodiments. The uplink section ULINK and the downlink section DLINK) of the touch panel (TSP) and the active pen.

Referring to FIG. 34, each of a plurality of LHBs in one frame period is divided into an uplink section ULINK for signal transmission from the touch panel TSP or the display panel 110 including the active panel to the active pen, Link section DLINK for signal transmission from the touch panel TSP to the display panel 110 including the touch panel TSP.

34, during the uplink period ULINK, a beacon signal BCON or a ping signal PNG distinguished from the drive signal LFD signal is supplied to the display panel 110, Lt; / RTI > to the active pen.

During the downlink period DLINK, a drive signal (LFD signal) is supplied to the display panel 110 to transmit the active pen through the display panel 110, and the pen signal is output from the active pen to the display panel 110 .

As described above, the LHB corresponding to the touch interval is divided into an uplink interval (ULINK) and a downlink interval (DLINK), and pen-recognition is performed for each of the uplink interval ULINK and the downlink interval DLINK. (TSP) and the active pen send and receive information and signals necessary for pen recognition, efficient and accurate signal transmission and reception for pen recognition becomes possible, and ultimately, an accurate and efficient pen Recognition can be made possible.

35 is a diagram illustrating a digital modulation method of a signal transmitted from a touch panel (TSP) and a signal transmitted from an active pen in a touch system according to the present embodiments.

Referring to FIG. 35, a signal transmitted from the display panel 110 to the active pen and a signal transmitted from the active pen to the display panel 110 may be different digital modulated signals.

For example, a signal transmitted from the touch panel TSP to the active pen (e.g., a drive signal for driving a touch panel such as BCON or PNG) during an up-link period (ULINK) (E.g., a pen signal) transmitted from the active pen to the touch panel TSP during down-link (DLINK) may be signals modulated by different digital modulation methods.

As described above, when a signal transmitted from the touch panel TSP to the active pen (e.g., a driving signal for driving a touch panel such as BCON or PNG) and an active pen during a down-link (DLINK) It is possible to provide a communication environment suitable for the characteristics of a signal (information) transmitted in both directions and a transmission environment by using a different digital modulation scheme for a signal (e.g., a pen signal) transmitted to the touch panel TSP.

35, a signal transmitted from a touch panel (TSP) to an active pen (e.g., a touch panel such as BCON or PNG) during an up-link (ULINK) May be a spread spectrum modulation (" Spread Spectrum Modulation ") signal.

A signal (e.g., a pen signal) transmitted from the active pen to the touch panel TSP during a down-link (DLink) may be a multi-level modulation signal.

Spread spectrum modulation is a kind of modulation technique that spreads a signal to be transmitted using a pseudo noise (PN) code.

Such spread spectrum modulation may be performed, for example, using Direct Sequence Spread Spectrum (DSSS) modulation, Frequency Hopping Spread Spectrum (FHSS) modulation, or Time Hopping Spread Spectrum (THSS) Modulation and so on.

In addition, the multi-level modulation is a method of modulating the digital signal to be transmitted to three or more levels that represent binary numbers when performing amplitude modulation, phase modulation, frequency modulation, etc., Is a modulation technique in which, when more information is to be transmitted in a limited transmission band, the number of states that can be taken in the modulation is multiplied by two or more (level or phase) without changing the modulation rate.

This multi-level modulation includes phase shift keying (PSK) as a phase modulation, pulse amplitude modulation (PAM) as an amplitude modulation, quadrature modulation (QAM) as a modulation in which phase and amplitude are combined Amplitude Modulation, and Vestigial Side Band (VSB) modulation.

As described above, when a signal is transmitted from the touch panel (TSP) to the active pen, by using the spread spectrum technique, it is possible to transmit a signal that is robust against noise and high in security to the active pen. Particularly, Pen recognition improvement can be expected. Further, when a signal is transmitted from the active pen to the touch panel TSP, more information can be transmitted to the touch panel TSP in a limited transmission band by using the multi-level modulation technique.

36 is a diagram showing full sensing and local sensing in the touch system according to the present embodiments.

Referring to FIG. 36, the touch display device 100 according to the present embodiments can sense a touch by a finger and an active pen in the entire screen area.

Sensing the touch of the finger and the active pen in the entire area of the screen of the touch display device 100 is referred to as full sensing.

The entire screen area where full sensing is performed is referred to as a full sensing area (FSA).

Referring to FIG. 36, the touch display device 100 according to the present embodiments can sense a touch by a finger and / or an active pen only in a partial area of the screen.

It is referred to as local sensing that the touch display device 100 senses a touch by a finger and / or an active pen in a part of the screen.

The whole area of the screen which becomes the local sensing is called a local sensing area (LSA).

The number of such local sensing areas (LSA) may be one or more.

The touch circuit TC at local sensing can perform pen recognition processing (pen touch sensing processing) in a local sensing area LSA corresponding to a part of the entire screen area.

The touch display device 100 supplies the driving signal only to the touch electrodes disposed in the local sensing area LSA among all the touch electrodes disposed in the touch panel TSP, It is possible to perform sensing processing (touch sensing processing, pen touch sensing processing) by performing signal detection through the touch electrodes disposed in the area LSA.

In some cases, the touch display device 100 supplies driving signals to all the touch electrodes disposed on the touch panel TSP at the time of local sensing, and instead supplies the driving signals to the touch electrodes disposed in the local sensing area LSA (Touch sensing process, pen touch sensing process).

Referring to FIG. 36, the entire screen area sensing method can sense the full sensing area FSA during one LHB section. However, if only one LHB section is allocated for a short time, (LHBs), such as four, six, eight, or even fourteen, while sensing the full sensing area (FSA).

For example, when sensing one-sixth of the full sensing area (FSA) during each LHB section, the entire area of the screen can be sensed after passing through six LHB sections.

37 is a view showing variable control of a local sensing area (LSA) in a touch system according to the present embodiments.

37, the touch display apparatus 100 may perform local sensing in two or more local sensing areas LSA # 1 and LSA # 2, and may perform local sensing in two or more local sensing areas LSA # 1, LSA # 2) may be varied in size.

In other words, the location or size of the local sensing area (LSA) can be varied.

Accordingly, accurate pen recognition (pen touch sensing) can be performed even in a variety of situations where the number of active pens and the touch range by the active pen can be dynamically varied.

36 and 37, the local sensing area LSA is shown in the form of a square block, but this is only an example for convenience of explanation and may be various shapes.

For example, the local sensing area LSA may vary in shape depending on the performance of the display panel 110, the state of the display panel, the shape of the touch electrode, the number of the touch electrodes, and the grouping of the touch electrodes. For example, depending on the shape of the grouping of the touch electrodes, the local sensing area may be various shapes such as a square, a circle, an ellipse, a square, a polygon, or a cross.

In addition, the shape of the local sensing area LSA may be constant or may be adaptively changed depending on the presence or the number of the finger and / or the active pen.

38 and 39 are exemplary diagrams of local sensing in the touch system according to the present embodiments.

As shown in Figs. 38 and 39, the three touch driving circuits ROIC # 1, ROIC # 2 and ROIC # 3 can drive the touch panel TSP.

The first touch drive circuit ROIC # 1 controls the first touch panel area TSPA # 1 of the touch panel TSP.

That is, the first touch driving circuit ROIC # 1 drives the touch electrodes disposed in the first touch panel area TSPA # 1 of the touch panel TSP and the first touch panel areas TSPA # The TSPA # 1 can detect a signal from the touch electrodes disposed on the TSPA # 1.

The second touch drive circuit ROIC # 2 controls the second touch panel area TSPA # 2 of the touch panel TSP.

That is, the second touch driving circuit ROIC # 2 drives the touch electrodes disposed in the second touch panel area TSPA # 2 of the touch panel TSP and drives the second touch panel areas TSPA # The signal can be detected from the touch electrodes disposed in the TSPA # 2.

The third touch operation circuit ROIC # 3 controls the third touch panel area TSPA # 3 of the touch panel TSP.

That is, the second touch driving circuit ROIC # 3 drives the touch electrodes disposed in the third touch panel area TSPA # 3 of the touch panel TSP and the third touch panel areas TSPA # TSPA # 3) of the touch electrode.

38, the local sensing area in which each of the three touch driving circuits ROIC # 1, ROIC # 2, and ROIC # 3 performs driving and signal detection for local sensing may exist in its own touch panel area have.

Specifically, the first touch driving circuit ROIC # 1 can perform driving and signal detection on the first local sensing area LSA # 1 in the first touch panel area TSPA # 1.

The second touch driving circuit ROIC # 2 can perform driving and signal detection on the second local sensing area LSA # 2 in the second touch panel area TSPA # 2.

The third touch driving circuit ROIC # 3 can perform driving and signal detection on the third local sensing area LSA # 3 in the third touch panel area TSPA # 3.

39, the local sensing area in which each of the three touch driving circuits ROIC # 1, ROIC # 2, and ROIC # 3 performs driving and signal detection for local sensing includes all touch panel areas TSP # 1 , TSPA # 2, TSPA # 3, and the whole area of the touch panel (TSP)).

Specifically, the first touch driving circuit ROIC # 1 can perform driving and signal detection on the first local sensing area LSA # 1 that spans the entire area of the touch panel TSP.

The second touch driving circuit ROIC # 2 can perform driving and signal detection on the second local sensing area LSA # 2 that spans the entire area of the touch panel TSP.

The third touch driving circuit ROIC # 3 can perform driving and signal detection on the third local sensing area LSA # 3 that spans the entire area of the touch panel TSP.

40 is a view showing two types of touch electrodes TE in the touch display device 100 according to the present embodiments.

40, each of the plurality of touch electrodes TE forming the touch panel TSP may be a plate type having no open area or a mesh type having at least one open area OA, ).

The plate-type touch electrode TE may be a transparent electrode.

When one touch electrode TE is a mesh type, each open area OA existing in one touch electrode TE corresponds to a light emitting area of a sub pixel for image display .

Meanwhile, the touch display apparatus 100 according to the present embodiments may be various types of displays such as a liquid crystal display (LCD) display, an organic light emitting display (OLED) display, and a Quantum dot display .

In addition, in the touch display device 100 according to the present embodiment, the touch panel TSP includes an add-on type (or an external type) separately manufactured from the display panel 110 and bonded to the display panel 110, Lt; / RTI >

Alternatively, the touch panel TSP may be an embedded type (e.g., an in-cell type, an on-cell type, or the like) embedded in the display panel 110. [ In this case, the touch panel TSP can be regarded as an aggregate of a plurality of touch electrodes TE, and a plurality of touch electrodes TE can be embedded in the display panel 110. [

A panel structure for a case where a plurality of touch electrodes TE are embedded in the display panel 110 when the display panel 110 is a liquid crystal display panel will be briefly described with reference to FIG.

42 to 47, when the display panel 110 is an organic light emitting display panel, the panel structure for a case where a plurality of touch electrodes TE are embedded in the display panel 110 is shown as an example .

41 is a sectional view of a touch panel according to an embodiment of the present invention when the display panel 110 of the touch display device 100 is the liquid crystal display panel 110 and the touch panel TSP is embedded, And is conceptualized in a circuit.

Referring to FIG. 41, one pixel is formed in a size corresponding to a region TEA in which i × j sub-pixels SP are arranged by i data lines DL1 to DLi and j gate lines GL1 to GLj, A touch electrode TE is disposed.

In each subpixel SP, a gate electrode is connected to the gate line, a source electrode (or drain electrode) is connected to the corresponding data line, and a drain electrode (or source electrode) is connected to the pixel electrode PXL. (TR).

A plurality of touch electrodes TE are disposed in the display panel 110 as a whole.

The plurality of touch electrodes TE form a pixel electrode PXL and a capacitor Cst in each sub-pixel SP.

41, a capacitor Cst in each subpixel SP is formed by a pixel voltage applied to the pixel electrode PXL and a common voltage Vcom applied to a CEP point.

All of the CEP points in one touch electrode area TEA are points that are present on one touch electrode TE when viewed electrically.

During the display period, in all the touch electrode regions TEA, the CEP points corresponding to one electrode of the capacitor Cst in each subpixel SP may be all connected by the multiplexers MUXs. Accordingly, the common voltage Vcom can be applied to all sub-pixel regions of the display panel 110. [

Accordingly, the common voltage Vcom can be applied to all the CEP points in the display panel 110 by the multiplexers MUXs.

The CEP points corresponding to one electrode of the capacitors Cst in each subpixel SP in one or more or all of the touch electrode regions TEA during a blank interval (for example, LHB) are multiplexed by the multiplexers MUXs All may be connected.

Accordingly, a driving signal (e.g., a touch driving signal TDS) may be applied to all or part of the touch electrodes TE of all the touch electrodes disposed on the display panel 110 by the multiplexer MUXs.

That is, the multiplexer MUXs applies a driving signal (e.g., a touch driving signal TDS) to all CEP points on the touch electrode TE of all or part of all the touch electrodes disposed on the display panel 110 .

In order to prevent the parasitic capacitance from being formed between the data line and the touch electrode, when the touch driving signal TDS is applied to the touch electrode TE, the same (substantially the same) as the touch driving signal TDS A corresponding load-free driving signal LFD_DATA (Vtouch_data in FIG. 2) may be applied to the data lines DL1 to DLi.

To this end, the multiplexers MUXd1 to MUXdi are connected to the data lines DL1 to DLi.

During the display period, the multiplexers MUXd1 to MUXdi can supply the corresponding data voltages Vdata to the data lines DL1 to DLi, respectively.

During the display period, the multiplexers MUXd1 to MUXdi can supply the load-free driving signal LFD_DATA (Vtouch_data in FIG. 2) to all the data lines DL1 to DLi in the touch electrode area TEA.

In order to prevent the parasitic capacitance from being formed between the gate line and the touch electrode, when the touch driving signal TDS is applied to the touch electrode TE, the same (substantially the same as) the touch driving signal TDS A corresponding load-free driving signal LFD_GATE (Vtouch_gate in FIG. 2) may be applied to the gate lines GL1 to GLj.

To this end, the multiplexers MUXg1 to MUXgj are connected to the gate lines GL1 to GLj.

During the display period, the multiplexers MUXg1 to MUXgj can sequentially supply the gate voltage Vgate to the gate lines GL1 to GLj.

During the display period, the multiplexers MUXg1 to MUXgj can supply the load-free driving signal LFD_GATE (Vtouch_gate in FIG. 2) to all the gate lines GL1 to GLj in the touch electrode area TEA.

42 is a circuit diagram of each subpixel SP in the display panel 110 when the display panel 110 of the touch display device 100 according to the present embodiment is an organic light emitting display panel.

Referring to FIG. 42, in the display panel 110 according to the present embodiment, each subpixel SP basically includes an organic light emitting diode OLED, a driving transistor (not shown) for driving the organic light emitting diode OLED A first transistor T1 for transmitting a data voltage Vdata to a first node N1 corresponding to a gate node of the driving transistor DRT; (Vdata) or a storage capacitor (C1) for holding the voltage corresponding thereto for one frame time.

The organic light emitting diode OLED may include a first electrode E1, an anode electrode or a cathode electrode, an organic light emitting layer EL, and a second electrode E2, a cathode electrode or an anode electrode.

For example, a base voltage EVSS may be applied to the second electrode E2 of the organic light emitting diode OLED.

The driving transistor DRT drives the organic light emitting diode OLED by supplying a driving current to the organic light emitting diode OLED.

The driving transistor DRT has a first node N1, a second node N2, and a third node N3.

The first node N1 of the driving transistor DRT is a node corresponding to a gate node and may be electrically connected to a source node or a drain node of the first transistor T1.

The second node N2 of the driving transistor DRT may be electrically connected to the first electrode E1 of the organic light emitting diode OLED and may be a source node or a drain node.

The third node N3 of the driving transistor DRT may be electrically connected to a driving voltage line DVL that supplies a driving voltage EVDD as a node to which the driving voltage EVDD is applied, Node or source node.

The driving transistor DRT and the first transistor T1 may be implemented as an n-type or a p-type.

The first transistor T1 is electrically connected between the data line DL and the first node N1 of the driving transistor DRT and receives the scan signal SCAN through the gate line have.

The first transistor T1 may be turned on by the scan signal SCAN to transfer the data voltage Vdata supplied from the data line DL to the first node N1 of the driving transistor DRT .

The storage capacitor C1 may be electrically connected between the first node N1 and the second node N2 of the driving transistor DRT.

The storage capacitor C1 is not a parasitic capacitor (for example, Cgs or Cgd) which is an internal capacitor existing between the first node N1 and the second node N2 of the driving transistor DRT, And is an external capacitor intentionally designed outside the driving transistor DRT.

FIG. 43 is a diagram showing a position where the touch electrode TE is formed when the display panel 110 is the organic light emitting display panel 110 and the touch panel TSP is embedded in the touch display device 100 according to the present embodiment. Fig.

When the display panel 110 according to the present embodiment is the organic light emitting display panel 110 and the touch panel TSP is embedded, the plurality of touch electrodes TE are positioned on the encapsulation layer ENCAP can do. Here, the encapsulation layer (ENCAP) is a layer for protecting from moisture, air, physical shock, or foreign matter that may occur during the manufacturing process to secure panel reliability.

This structure is called TOE (Touch Sensor on Encapsulation Layer) structure.

44 to 46 are diagrams illustrating a case where the display panel 110 of the touch display device 100 according to the present embodiment is an organic light emitting display panel 110 and a touch panel TSP is embedded, (Touch Sensor Metal Layer On Encapsulation Layer) structure related to the TE (TE).

44 to 46, a touch sensor metal used in touch sensing includes not only a plurality of touch electrodes TE but also a plurality of touch electrodes TE and a touch circuit TC A plurality of touch lines TL corresponding to a signal line SL electrically connected to the touch panel and a plurality of touch pads TP connected to the touch circuit TC, have.

All of the touch sensor metals may be located on the encapsulation layer ENCAP.

44 and 45 show the TOE structure in which the touch electrode TE and the touch line TL exist in different layers.

46 and 47 show the TOE structure in which the touch electrode TE and the touch line TL exist in the same layer.

First, the first TOE structure illustrated in FIG. 44 will be described.

On the TOE structure, the touch electrode TE, the touch line TL and the touch pad TP are present on the encapsulation layer ENCAP.

However, the touch electrode TE, the touch line TL, and the touch pad TP exist in different layers.

A touch line TL is placed on the encapsulation layer ENCAP.

The end of the touch line TL may serve as a touch pad TP or may be connected to a touch pad TP located outside the panel. Here, the touch pad TP is connected to the touch circuit TC.

An insulating layer IL is present on the touch line TL.

A mesh-type touch electrode TE is placed on the insulating layer IL.

In the bridge portion, the touch electrode TE is electrically connected to the touch line TL through a contact hole passing through the insulating layer IL.

An overcoat layer (OCL) covering the touch electrode TE may be disposed.

Black matrices BM and color filters CF are disposed on the overcoat layer OCL.

The color filters CF correspond to, for example, a red color filter CF_R, a green color filter CF_G and a blue color filter CF_B, and correspond to a red color filter CF_R, a green color filter CF_G, The position of each of the color filters CF_B corresponds to the position of one sub-pixel.

One black matrix BM exists at the boundary of two subpixels SP and the area occupied by one touch electrode TE is larger than the area occupied by one subpixel SP.

The positions of the open regions in one touch electrode TE of the mesh type shown in FIG. 44 correspond to the positions of the light emitting regions of the respective subpixels SP.

Next, the second TOE structure illustrated in FIG. 45 will be described.

On the TOE structure, the touch electrode TE, the touch line TL and the touch pad TP are present on the encapsulation layer ENCAP.

However, the touch electrode TE, the touch line TL, and the touch pad TP exist in different layers.

Black matrices BM and color filters CF are arranged on the encapsulation layer ENCAP.

An overcoat layer OCL is disposed covering these black matrices BM and the color filters CF.

The touch line TL is located on the overcoat layer OCL.

The end of the touch line TL may serve as a touch pad TP or may be connected to a touch pad TP located outside the panel. Here, the touch pad TP is connected to the touch circuit TC.

An insulating layer IL is present on the touch line TL.

A mesh-type touch electrode TE is placed on the insulating layer IL.

In the bridge portion, the touch electrode TE is electrically connected to the touch line TL through a contact hole passing through the insulating layer IL.

The positions of the open regions in one touch electrode TE of the mesh type shown in FIG. 45 correspond to the positions of the light emitting regions of the respective subpixels SP.

Next, the third TOE structure illustrated in FIG. 46 will be described.

In the TOE structure, the touch sensor metal including the touch electrode TE, the touch line TL and the touch pad TP exists on the encapsulation layer ENCAP.

However, the touch sensor TE including the touch electrode TE, the touch line TL, and the touch pad TP exists in the same layer.

A touch sensor TE including a touch line TL and a touch pad TP is placed on the encapsulation layer ENCAP.

The end of the touch line TL may serve as a touch pad TP or may be connected to a touch pad TP located outside the panel. Here, the touch pad TP is connected to the touch circuit TC.

The overcoat layer OCL may be disposed on the touch sensor TE including the touch line TL and the touch pad TP.

Black matrices BM and color filters CF are disposed on the overcoat layer OCL.

The positions of the open regions in one touch electrode TE of the mesh type shown in FIG. 46 correspond to the positions of the light emitting regions of the respective subpixels SP.

Next, the fourth TOE structure illustrated in FIG. 47 will be described.

In the TOE structure, the touch sensor metal including the touch electrode TE, the touch line TL and the touch pad TP exists on the encapsulation layer ENCAP.

However, the touch sensor metal including the touch electrode TE, the touch line TL, and the touch pad TP may be located on the same layer.

Black matrices BM and color filters CF are arranged on the encapsulation layer ENCAP.

An overcoat layer OCL is disposed covering these black matrices BM and the color filters CF.

A touch sensor metal including a touch electrode TE, a touch line TL, and a touch pad TP is positioned on the overcoat layer OCL.

The end of the touch line TL may serve as a touch pad TP or may be connected to a touch pad TP located outside the panel. Here, the touch pad TP is connected to the touch circuit TC.

The positions of the open regions in one touch electrode TE of the mesh type shown in FIG. 47 correspond to the positions of the light emitting regions of the respective subpixels SP.

On the other hand, in the TOE structures of Figs. 44 to 47, color filters CF are arranged above the encapsulation layer ENCAP. These color filters CF may be necessary in the case of using a white organic light emitting diode (White OLED). When the white organic light emitting diode (White OLED) uses organic light emitting diodes such as red, green and blue, respectively, the color filters CF may not be required.

In the above-described embodiments, a plurality of touch electrodes TE are driven by a so-called multiplexer unit (or a multiplexer channel unit) in a touch display device 100 in which a touch electrode is built in the display panel 110, The display driving and the touch driving are divided into a display period and a touch period. The active pen includes a period (beacon signal transmission period) for informing the touch panel information and status during a touch period, and a plurality of active pens It is possible to provide position sensing and a driving method and apparatus in which a pen signal of each active pen is transmitted.

According to the present embodiments, it is possible to provide a touch display device 100, an active pen, a touch system, a touch circuit, and a pen recognition method that can efficiently provide display, touch sensing, and pen touch sensing.

According to the embodiments, it is possible to provide the touch display device 100, the active pen, the touch system, the touch circuit, and the pen recognition method capable of improving the pen touch sensing performance without deteriorating the display performance and the touch performance .

According to the embodiments, a touch display device 100, an active pen, a touch system, a touch circuit, and a pen recognition method capable of simultaneously performing a plurality of pen touch inputs can be provided.

According to the present embodiments, it is possible to provide a touch display device 100, an active pen, a touch system, a touch circuit, and a pen recognition method that can accurately distinguish and process a plurality of pen touch inputs from each other.

According to the embodiments, the touch display device 100, the active pen, the touch system, the touch circuit, and the pen recognition device 100, which enable recognition of positions, pressures, tilts, Method can be provided.

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 inventions. , Separation, substitution, and alteration of the invention will be apparent to those skilled in the art. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (48)

A display panel on which a plurality of touch electrodes are arranged; And
And a touch circuit which supplies a driving signal to the display panel, senses a touch by a finger based on a signal received in response to the driving signal, or senses a pen touch by two or more active pens,
One frame period repeatedly includes a display interval and a blank interval,
Wherein the pen signals output from the two or more active pens are emitted to the display panel in two or more blank intervals of the plurality of blank intervals in the one frame period,
Wherein the touch circuit senses a pen touch by the at least two active pen based on the pen signals.
The method according to claim 1,
Wherein the at least two blank intervals correspond to a pen position / tilt sensing interval for sensing at least one of a position and a tilt for the at least two active pen.
3. The method of claim 2,
Wherein the intervals between the pen position / tilt sensing intervals are equal to each other.
3. The method of claim 2,
Wherein the plurality of blank intervals included in the one frame period are divided into a plurality of blank intervals,
And a beacon signal including pulses indicative of predetermined codes is transmitted to the at least two active pens in the display panel, the at least one blank interval corresponding to a beacon signal transmission interval.
5. The method of claim 4,
And operates in one of a pen search mode and a pen mode according to the beacon signal.
5. The method of claim 4,
Wherein the beacon signal includes panel information and drive control information.
5. The method of claim 4,
Wherein a frequency of a plurality of pen pulses constituting the pen signal is defined by the beacon signal,
Wherein the number of pulses of the plurality of pen pulses forming the pen signal is defined by the beacon signal.
5. The method of claim 4,
Wherein the number of blank intervals existing between the beacon signal transmission period and the next beacon signal transmission period is defined by the beacon signal.
5. The method of claim 4,
And a blank interval in which the pen signal is not radiated exists between the beacon signal transmission period and the next beacon signal transmission period.
5. The method of claim 4,
Wherein a plurality of blank intervals in the one frame period are divided into a plurality of blank intervals,
After the blank interval corresponding to the interval in which the beacon signal is transmitted,
And at least one blank section corresponding to a section for sensing at least one of a position and a tilt for the two or more active pens,
One or more blank intervals corresponding to a period for sensing pressure of the two or more active pens or one or more blank intervals corresponding to a period in which data including pen- Further comprising a touch display device.
The method according to claim 1,
In the first half of each of the two or more blank sections,
A ping signal consisting of pulses indicative of predetermined codes is transmitted from the display panel to the active pen,
Then, a drive signal is supplied to the display panel, and a pen signal is output from the active pen.
12. The method of claim 11,
Wherein the pen signal is transmitted from the active pen after a predetermined time elapses from a last pulse among the pulses constituting the finger signal.
The method according to claim 1,
Wherein the pen signal comprises:
A plurality of pen pulses,
A first state that is in a positive phase relationship with the operation signal of the touch circuit or the drive signal,
And a second state that is in an inverse relationship with the operation signal of the touch circuit or the drive signal.
The method according to claim 1,
Wherein the pen signal comprises:
Comprising a plurality of pen pulses,
Some pulses of the plurality of pen pulses,
A first state that is in a positive phase relationship with the operation signal of the touch circuit or the drive signal,
A second state in which the operation signal of the touch circuit is in an inverse relationship with the operation signal of the touch circuit,
And a third state having a constant value.
The method according to claim 1,
Wherein each of the plurality of blank sections in the one frame section includes:
An uplink section for signal transmission from the display panel to the active pen,
And a down-link section for signal transmission from the active pen to the display panel.
16. The method of claim 15,
During the uplink interval,
A beacon signal or a ping signal distinguished from the drive signal is transmitted from the display panel to the active pen,
During the down-link interval,
And the pen signal is output from the active pen to the display panel.
The method according to claim 1,
A signal transmitted from the display panel to the active pen, and a signal transmitted from the active pen to the display panel,
The touch display device is a different digital modulated signal.
18. The method of claim 17,
Wherein the signal transmitted from the display panel to the active pen is a spread spectrum modulated signal,
Wherein the signal transmitted from the active pen to the display panel is a multi-level modulated signal.
The method according to claim 1,
Wherein the driving signal is an AC type signal including a plurality of pulses or a DC type signal having a constant voltage.
The method according to claim 1,
The touch circuit performs pen recognition processing in a local sensing area corresponding to a partial area of the entire screen area,
Wherein the number of the local sensing areas is one or more,
Wherein the position or size of the local sensing area is variable.
The method according to claim 1,
The one frame period is divided into 16 display periods and 16 blank periods in a time division manner,
Wherein the sixteen blank intervals include two or more blank intervals for sensing a position of the pen touch by the two or more active pens.
Two or more active pens; And
A display panel on which a plurality of touch electrodes are arranged; a sensor for sensing a touch by a finger based on a signal received in response to the drive signal supplied with a drive signal to the display panel, or sensing a pen touch by two or more active pens And a touch display device including a touch circuit,
One frame period in the touch display device repeatedly includes a display period and a blank period,
Wherein the pen signals output from the two or more active pens are emitted to the display panel in two or more blank intervals of the plurality of blank intervals in the one frame period,
Wherein the touch circuit of the touch display device senses a pen touch by the at least two active pen based on the pen signals.
In an active pen interlocking with a touch display device,
Two or more pen tips contacting or non-contacting the display panel of the touch display device; And
Sensing a pressure through at least one of the two or more pen tips, receiving a drive signal applied to the display panel through at least one of the two or more pen tips, and, via at least one of the two or more pen tips, And outputs a pen signal to the display unit,
The pen signal is output to the display panel in a blank section between two display sections,
Wherein the pen signal is output to the display panel in another active pen during a blank interval in which the pen signal is output to the display panel.
24. The method of claim 23,
Wherein the two or more pen tips are spaced a distance apart.
25. The method of claim 24,
Wherein the output position and timing of the pen signal vary according to the type of the driving signal.
26. The method of claim 25,
Wherein the driving signal is an AC type signal including a plurality of pulses, the pen signal is simultaneously output from the at least two pen tips, and the pen signal is output at only a portion of the at least two pen tips.
26. The method of claim 25,
Wherein the pen signal is sequentially output from the two or more pen tips when the driving signal is a DC type signal having a constant voltage.
26. The method of claim 25,
Wherein the drive signal and the pen signal are different digital modulated signals.
29. The method of claim 28,
Wherein the drive signal is a spread spectrum modulated signal and the pen signal is a multi-level modulated signal.
A first circuit for supplying a driving signal to a display panel on which a plurality of touch electrodes are arranged and for detecting a signal generated in response to the driving signal through the display panel; And
And a second circuit for sensing a touch by a finger or sensing a pen touch by an active pen on the basis of a signal detected by the first circuit,
The first circuit comprising:
The method comprising: operating in a plurality of blank intervals within one frame interval,
A driving signal is supplied to the display panel during two or more different blank intervals in the one frame period, the pen signals output from the two or more active pens are detected through the display panel,
The second circuit comprising:
And sensing the pen touch by the two or more active pens based on the pen signals.
A pen recognition method of a touch display apparatus,
A first step of supplying a driving signal to a display panel on which a plurality of touch electrodes are arranged and detecting a signal generated in response to the driving signal through the display panel; And
Sensing a touch by a finger based on a signal detected in the first step or sensing a pen touch by an active pen,
In the first step, the touch display device displays,
The method comprising: operating in a plurality of blank intervals within one frame interval,
A driving signal is supplied to the display panel during two or more different blank intervals in the one frame period, the pen signals output from the two or more active pens are detected through the display panel,
In the second step, the touch display device displays,
And sensing the pen touch by the at least two active pens based on the pen signals.
A display panel on which a plurality of touch electrodes are arranged; And
And a touch circuit that supplies a driving signal to the display panel and senses a touch by a finger or senses a pen touch by an active pen based on a signal received in response to the driving signal,
There is a blank interval between two display intervals in which display driving is performed,
A first blank interval, a second blank interval, and a third blank interval corresponding to three different blank intervals in which the display panel receives the pen signal from the active pen among the plurality of blank intervals,
The touch circuit includes:
Wherein during the first blank interval, a pen signal output from the active pen is received through the display panel to sense the position of the active pen,
During the second blank interval, receiving the pen signal output from the active pen through the display panel to sense the position of the active pen,
During the third blank interval, receiving a pen signal output from the active pen through the display panel to sense the position of the active pen,
At least one of a position of the active pen sensed through the first blank interval, a position of the active pen sensed through the second blank interval, and a position of the active pen sensed through the third blank interval Even if different,
Wherein a temporal interval between the first blank section and the second blank section and a temporal interval between the second blank section and the third blank section are the same.
In an active pen interlocking with a touch display device,
Two or more pen tips contacting or non-contacting the display panel of the touch display device; And
Sensing a pressure through at least one of the two or more pen tips, receiving a drive signal applied to the display panel through at least one of the two or more pen tips, and, via at least one of the two or more pen tips, And a processing unit for generating a pen signal on the display unit,
The pen signal generated on the display panel through at least one of the two or more pen tips to sense the position of the active pen may be divided into three different blank sections among the blank sections existing between the two display sections The second blank interval, and the third blank interval corresponding to the first blank interval,
Even if at least one of the position of the active pen in the first blank section, the position of the active pen in the second blank section and the position of the active pen in the third blank section are different,
Wherein the temporal spacing between the first blank section and the second blank section is the same as the temporal spacing between the second blank section and the third blank section.
In the touch display device,
A display panel on which a plurality of touch electrodes are arranged; And
And a touch circuit that supplies a driving signal to the display panel and senses a touch by a finger or senses a pen touch by an active pen based on a signal received in response to the driving signal,
There is a blank interval between display periods in which the display panel is driven to display,
There is a first blank interval and a second blank interval in which a beacon signal is transmitted from the display panel to the active pen,
The beacon signal transmitted in the first blank interval may include a beacon signal,
And information for controlling driving for sensing the pen touch by the active pen during one or more blank intervals existing between the first blank interval and the second blank interval.
37. The method of claim 36,
Wherein the operation mode of the active pen is changed during at least one blank interval existing between the first blank interval and the second blank interval according to the beacon signal transmitted in the first blank interval.
35. The method of claim 34,
Wherein the frequency of the pen signal output from the active pen is changed during one or more blank intervals between the first blank interval and the second blank interval according to a beacon signal transmitted in the first blank interval.
35. The method of claim 34,
Wherein the number of pulses of the pen signal output from the active pen is changed during one or more blank intervals existing between the first blank interval and the second blank interval according to a beacon signal transmitted in the first blank interval.
35. The method of claim 34,
Wherein the number of one or more blank intervals existing between the first blank interval and the second blank interval varies depending on a beacon signal transmitted in the first blank interval.
35. The method of claim 34,
And a blank interval in which a pen signal is not output from the active pen is present in at least two blank intervals existing between the first blank interval and the second blank interval.
35. The method of claim 34,
Wherein the first blank interval and the second blank interval are included in one frame period.
35. The method of claim 34,
Wherein the plurality of blank intervals further include a third blank interval in which a beacon signal is transmitted,
Wherein an interval between the first blank section and the second blank section and an interval between the second blank section and the third blank section are the same.
35. The method of claim 34,
Wherein the plurality of blank intervals further include a third blank interval in which a beacon signal is transmitted,
Wherein an interval between the first blank section and the second blank section and an interval between the second blank section and the third blank section are different from each other.
A display panel on which a plurality of touch electrodes are arranged; And
And a touch circuit that supplies a touch driving signal to the plurality of touch electrodes and senses a touch generated on the display panel,
Wherein one frame section of the display panel includes a plurality of display sections and a plurality of blank sections,
Wherein the plurality of blank sections include at least a first blank section and a second blank section,
A plurality of touch electrodes for supplying a beacon signal to at least one of the plurality of touch electrodes during the first blank interval,
And supplies a touch driving signal to at least one of the plurality of touch electrodes during the second blank interval.
44. The method of claim 43,
Wherein the plurality of blank sections further include a third blank section,
During the third blank interval,
And supplies a signal different from the touch driving signal supplied to the touch electrode in the second blank section.
44. The method of claim 43,
The touch circuit includes:
A touch sensing unit for sensing the touch by sensing the touch electrode by outputting the touch driving signal;
A signal generator for generating a signal different from the touch driving signal; And
And a switch for electrically connecting one of the signal generating unit and the touch sensing unit to the touch electrode selectively.
In an active pen interlocking with a touch display device,
One or more pen tips contacting or non-contacting the display panel of the touch display device; And
And a processor for receiving a beacon signal applied to the display panel through at least one pen tip of the at least one pen tip and outputting a pen signal to the display panel based on the beacon signal.
47. The method of claim 46,
Wherein the pen signal comprises:
Outputting to the display panel in a blank interval between two display periods,
Wherein the pen signal is output to the display panel in another active pen during a blank interval in which the pen signal is output to the display panel.
A touch panel including a display panel on which a plurality of touch electrodes are arranged, and a touch circuit for supplying a touch driving signal to the plurality of touch electrodes and sensing a touch generated on the display panel; And
At least one pen tip in contact with or non-contact with the display panel, and a beacon signal applied to the display panel through at least one pen tip of the at least one pen tip, And a processing unit for outputting a pen signal to the display unit,
Wherein one frame section of the display panel includes a plurality of display sections and a plurality of blank sections,
Wherein the plurality of blank sections include at least a first blank section and a second blank section,
A plurality of touch electrodes for supplying a beacon signal to at least one of the plurality of touch electrodes during the first blank interval,
And supplying a touch driving signal to at least one of the plurality of touch electrodes during the second blank interval.

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