KR20240111994A - Foldable terminal apparatus equipped with flexible display apparatus having multiple display areas - Google Patents

Abstract

The present invention relates to a foldable terminal device, and more specifically, to a foldable terminal device equipped with a flexible display having multiple display areas.
A foldable terminal device with a flexible display according to an embodiment of the present invention is a single flexible display, and includes a plurality of displays that are independently activated depending on whether the foldable terminal device is folded. The flexible display comprising an area; and a self-dot type touch panel including a single touch drive IC that receives sensing signals from a plurality of touch sensors and extracts touch coordinates of the touch sensors.

Description

Foldable terminal device with a flexible display having multiple display areas {FOLDABLE TERMINAL APPARATUS EQUIPPED WITH FLEXIBLE DISPLAY APPARATUS HAVING MULTIPLE DISPLAY AREAS}

The present invention relates to a foldable terminal device, and more specifically, to a foldable terminal device equipped with a flexible display having multiple display areas.

In general, various portable electronic devices, including foldable smartphones, laptops, tablets, game consoles, etc., are equipped with an organic light-emitting diode (OLED) flexible display that includes a touch sensor.

Foldable smartphones are divided into bar-type and clamshell-type. In terms of display size when unfolded, bar-type smartphones are tablet-sized and clamshell-type foldable smartphones are mobile smartphone-sized.

Figure 1 is a schematic diagram of a conventional foldable phone, consisting of two flexible OLEDs, that is, one Main Display (101) and one Sub Display (101). do.

Additionally, a conventional foldable smartphone includes two display drive ICs (DDI) 121 and 122 and two touch drive ICs (TDI) 111 and 112. And it additionally includes MUX (131).

FIG. 2 is a diagram schematically showing a three-dimensional perspective view of a foldable phone equipped with two flexible OLEDs of FIG. 1.

As shown in FIG. 2, the main display 201 of the two flexible OLEDs is formed in the unfolded region of the foldable phone or the inner surface of the foldable phone in an unfolded state.

The sub-display 202 is formed on the outer surface of the foldable phone in the folded state.

One main display is mounted on the inside of the foldable smartphone and one sub-display is mounted on the outside of the foldable smartphone, and the size of the main display is relatively larger than the size of the sub-display.

This conventional foldable smartphone has a display module structure including two different displays, two DDIs, two different TDIs, two different flexible PCBs (FPCBs), and discrete components in one foldable phone. There were problems such as larger, thicker, more complex, higher power consumption, and higher costs.

The matters described as background technology above are only for the purpose of improving understanding of the background of the present invention, and should not be taken as an acknowledgment that they correspond to prior art already known to those with ordinary knowledge in this technical field.

Public Patent Publication 10-2020-0109737

The present invention is intended to provide a foldable terminal device equipped with a flexible display having multiple display areas.

The present invention was derived to solve the problems caused by the prior art described above, and its purpose is to implement a technology that increases cost-effectiveness by avoiding duplication of peripheral components related to a flexible display and improving performance.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description of the present invention. .

According to one aspect of a foldable terminal device equipped with a flexible display having a plurality of display areas of the present invention,

The foldable terminal device is,

A single flexible display, the flexible display including a plurality of display areas that are independently activated depending on whether the foldable terminal device is folded or not; and

It includes a self-dot type touch panel equipped with a single touch drive IC that receives sensing signals from a plurality of touch sensors and extracts touch coordinates of the touch sensors.

Preferably,

In the touch panel,

The plurality of touch sensors are deposited in a matrix format with at least one column and at least one row on each display area; and

The Touch Drive IC receives the sensing signal from each touch sensor on the activated display area and extracts the coordinates of the touch sensor where the touch occurred.

Preferably,

The touch panel is,

It further includes a plurality of switching circuit units that switch between a turn-on state that transmits the sensing signal of each touch sensor on the activated display area to the touch drive IC and a turn-off state that is pulled down to ground. However,

Each of the switching circuit units controls switching of touch sensors belonging to the same column of the touch panel.

Preferably,

The flexible display,

a first display area activated when the foldable terminal device is unfolded; and

Includes a second display area and a third display area that are activated when the foldable terminal device is folded,

The first display area is formed on the inner surface of the terminal device when the terminal device is unfolded, and the second display area is formed on an edge of the terminal device when the terminal device is folded. The third display area is formed on the external surface of the terminal device when the terminal device is folded.

Preferably,

Each of the switching circuit units,

a plurality of first switch units that control sensing and ground switching of a plurality of first touch sensors generated on the first display area; and

and a plurality of second switch units that control sensing and ground switching of a plurality of second touch sensors generated on the second display area and the third display area.

Preferably,

Each of the first switch unit and the second switch unit includes two transistors,

The two transistors include a first transistor that is pulled down to ground when activated by a pair of control signals output from the touch drive IC, and a second transistor that is connected to the touch drive IC when activated.

Preferably,

The first switch unit and the second switch unit are connected in parallel to each other,

The first switch unit is connected to the touch drive IC to simultaneously sense the plurality of first touch sensors by a first pair of control signals (SEL-SUB: High, SEL-MAIN: Low), and the second switch The unit pulls down the plurality of second touch sensors to ground,

By a second pair of control signals (SEL-SUB: Low, SEL-MAIN: High), the first switch unit simultaneously pulls down the plurality of first touch sensors to ground, and the second switch unit pulls down the plurality of first touch sensors to ground. 2 Connect to the touch drive IC to sense the touch sensor.

Preferably,

Depending on whether the flexible display is folded, one of the plurality of first touch sensors or the plurality of second touch sensors is activated by the first switch unit and the second switch unit, so that the touch drive The efficiency of the touch drive IC is increased by reducing the number of pins of the touch drive IC and the size of the memory by commonizing the active elements including the pins of the IC, memory, and an operational amplifier (Amp),

The touch drive IC is characterized in that it is composed of a single device.

Preferably,

It further includes a display drive IC that activates at least one display area depending on whether the flexible display is folded,

The display drive IC is characterized in that it is composed of a single unit.

Preferably,

The flexible display is characterized as an organic light-emitting diode (OLED) display.

Preferably,

The touch drive IC is,

Applying a driving signal of a predetermined voltage to the plurality of touch sensors deposited on the first display area for touch sensing of the plurality of touch sensors deposited on the first display area, and sensing of the plurality of touch sensors Receive a signal.

Preferably,

The sensing signal has information on voltage change due to touch capacitance (Ct) generated by sensing by an arbitrary touch sensor.

Preferably,

The touch panel is,

It further includes a plurality of touch sensor signal lines for transmitting the sensing signal from each touch sensor to the touch drive IC.

Preferably,

The touch panel is,

It further includes a plurality of muxes (MUX) that multiplex the output of the same row of each of the switching circuit units and connect them to the touch drive IC.

According to a foldable terminal device equipped with a flexible display with multiple display areas according to an embodiment of the present invention, compared to the conventional technology, the number of built-in ICs, the size of the IC, and the number of peripheral components are reduced, and the module structure is improved. While keeping it small, cost-effectiveness can be significantly improved by reducing the thickness and improving additional functions.

The effects of the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

Figure 1 is a schematic diagram of a conventional foldable phone, which includes two flexible OLEDs, namely a Main Display and a Sub Display.
FIG. 2 is a diagram schematically showing a three-dimensional perspective view of a foldable phone equipped with two flexible OLEDs of FIG. 1.
Figure 3 is a diagram showing a schematic diagram of a foldable phone according to an embodiment of the present invention, operating as a main display area, edge display area, and sub display area. Possibly one flexible OLED is provided.
FIG. 4 is a diagram schematically showing a three-dimensional perspective view of a foldable phone equipped with one flexible OLED of FIG. 3.
Figure 5 shows the problem that the size of the component parts, that is, the touch drive IC (TDI) and the MUX, increases when replacing the two flexible OLEDs of the conventional foldable phone with one flexible OLED of the present invention. This is a drawing showing.
FIG. 6 is a diagram illustrating a foldable phone equipped with one flexible OLED of the present invention, and does not increase the size of the components by including a plurality of switching circuit units (SW COL-n).
FIG. 7A is a detailed circuit diagram of the switching circuit unit (SW COL-n) of the present invention, and FIG. 7B shows a table showing an example of a control signal for controlling the switch unit of the switching circuit unit.
Figure 8 is a diagram showing a self-dot type touch sensor (b) of the present invention, and for comparison, shows a conventional mutual type touch sensor (a).

In order to fully understand the present invention, its operational advantages, and the objectives achieved by practicing the present invention, please refer to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same elements.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings and examples.

The term touch panel in the present invention refers to a capacitive touch panel, which generates a predetermined capacitance between a body finger or a touch input tool with similar conductive characteristics and the touch pattern of the touch panel, and a voltage applied to the generated capacitance. This refers to a device that can determine whether or not a touch has been touched based on changes.

A foldable terminal device or smartphone in the present invention refers to a smartphone whose display can be folded small and is equipped with a flexible display whose display itself can be folded.

Figure 3 is a diagram showing a schematic diagram of a foldable phone according to an embodiment of the present invention, operating as a main display area, edge display area, and sub display area. Possibly one flexible OLED is provided.

A foldable terminal device, that is, a foldable phone, according to an embodiment of the present invention includes a touch panel including one flexible display 300 and one TDI 311.

The flexible display 300 is composed of an Organic Light Emitting Diode (OLED) display.

A single flexible display 300 includes a plurality of display areas 301, 302, and 303 that are independently activated depending on whether the foldable terminal device is folded.

The touch panel includes a single touch drive IC (TDI: Touch Drive IC) 311 that receives sensing signals from a plurality of touch sensors and extracts the touch coordinates of the touch sensors, and is configured in a self-dot method. do.

The flexible display 300 includes a main display area 301 that is activated when the foldable terminal device is unfolded, an edge display area 303 that is activated when the foldable terminal device is folded, and a sub-display area. Includes (302).

The main display area 301 is formed on the inner surface of the terminal device when the terminal device is unfolded.

The edge display area 303 is formed at the edge of the terminal device when the terminal device is folded.

The sub-display area 302 is formed on the outer surface of the terminal device when the terminal device is folded.

The foldable phone of the present invention further includes a display drive IC (DDI) 321 that activates at least one display area depending on whether the flexible display 300 is folded.

The display drive IC 321 is composed of a single unit. In FIG. 3 , for ease of understanding, the DDI is shown in the touch panel area, but in reality, the DDI 321 is not formed on the touch panel, but on a display panel disposed below the touch panel. In Figure 3, the touch panel area is shown to show that the foldable phone of the present invention is composed of one TDI (311) and one DDI (321).

The touch panel further includes a plurality of muxes (MUX) 331 that multiplex sensor signal lines and connect them to the TDI (311).

The MUX multiplexes the output of the same row of the plurality of touch sensors configured in each column and connects it to the touch drive IC 311.

The touch drive IC 311 is used for touch sensing of a plurality of touch sensors deposited on the main display area 301 when the foldable phone is unfolded, that is, unfolded, and the main display area 301 is activated. A driving signal of voltage is applied to a plurality of touch sensors deposited on the first display area, and sensing signals from the plurality of touch sensors are received.

The sensing signal of the touch sensor has information on the voltage change due to the touch capacitance (Ct) generated by sensing by an arbitrary touch sensor.

FIG. 4 is a diagram schematically showing a three-dimensional perspective view of a foldable phone equipped with one flexible OLED of FIG. 3.

As shown in FIG. 4, the present invention, unlike conventional foldable phones, consists of a single flexible OLED.

A flexible display is an OLED display in which a main display area 401, an edge display area 403, and a sub-display area 402 are connected.

The main display area 401 is a display portion that is activated when the foldable terminal device is unfolded and is formed on the inner surface of the terminal device.

The sub-display area 402 is a display portion that is activated when the foldable terminal device is folded and is formed on the external surface of the terminal device.

The edge display area 403 is a display portion that is activated when the foldable terminal device is folded and is formed at the edge of the terminal device.

Figure 5 shows the problem that the size of the component parts, that is, the touch drive IC (TDI) and the MUX, increases when replacing the two flexible OLEDs of the conventional foldable phone with one flexible OLED of the present invention. This is a drawing showing.

In the configuration of the conventional foldable phone shown in FIG. 1, when two flexible displays are replaced with one flexible OLED, a sensor signal line ( 542) increases in each column.

As the number of touch sensor signal lines 542 connected to the MUX formed in each column increases, the size of the MUX increases, and active elements such as memory and operational amplifiers (Amp) in the TDI also increase. It increases.

The large number of signal lines input to the TDI (511) increases the number of channels, memory, and related active elements of the TDI (511), which increases the size of the TDI (511) and increases the footprint of the TDI (511). And this causes the price of TDI (511) to rise.

Figure 6 is a diagram illustrating, as an example, the sensor arrangement of a foldable phone equipped with one flexible OLED of the present invention, and does not increase the size of the components including a plurality of switching circuit units (SW COL-n). .

The present invention is intended to improve the prior art of FIG. 5. The main display area 601 of the foldable phone is activated when unfolded, and the sub-display area 602 and edge display area 603 are activated when folded. This is activated.

In the touch panel of the present invention, a plurality of touch sensors are deposited in a matrix format with at least one column and at least one row on each display area.

The touch drive IC (TDI) 611 receives the sensing signal from each touch sensor on the activated display area and extracts the coordinates of the touch sensor where the touch occurred.

As shown in FIG. 6, the main display area 601 includes eight touch sensors 641 (M11, M12, M13, M14, M15, M16, M17, M18) in the first column (Column[1]). do.

The edge display area 603 includes one touch sensor 641 (S11) in the first column.

The sub-display area 602 includes four touch sensors (S641; S12, S13, S14, and S15) in the first column.

The number of columns and rows of the touch panel of the present invention may vary depending on the size of the display, and is not limited to the number shown in FIG. 6.

The flexible OLED 600 shown in FIG. 6 consists of a touch sensor with n columns and 13 rows in a matrix format.

The touch panel of the present invention includes a plurality of touch sensor signal lines for transmitting sensing signals from each touch sensor 641 to the touch drive IC 611.

The main display area 601 includes eight touch sensor signal lines 671, 672, 673, 674, 675, 676, 677, and 678 in the first column (Column[1]).

The edge display area 603 includes one touch sensor signal line 681 in the first column.

The sub-display area 602 includes four touch sensor signal lines 682, 683, 684, and 685 in the first column.

The touch panel of the present invention includes a plurality of switching circuit units (SW-COL1 to SW-COLn) 661.

A plurality of switching circuit units 661 transmit the sensing signal of each touch sensor on the activated display area to the touch drive IC in a turn-on state and transmit the sensing signal of each touch sensor on the non-activated display area to the touch drive IC. Switches to a turn-off state without transmitting to the IC.

When the foldable phone is unfolded, the main display area 601 is activated, and the first column switching circuit unit (SW-COL1) controls switching of the touch sensor belonging to the same column.

Specifically, the first column switching circuit unit (SW-COL1) serves to select the row of the touch sensor activated in the first column depending on whether it is folded.

Therefore, the number of switching circuit units is equal to the number of columns of the touch panel.

Of the eight touch sensors formed in the main display area 601 of the first column, five (M11, M12, M13, M14, M15) are used in the switching circuit (SW-COL1) (661) when the foldable smartphone is unfolded. By the switching operation of , the touch sensors (M11, M12, M13, M14, M15) are in a sensing operation state.

Five touch sensors (S11, S12, S13, S14, S15) formed in the edge display area 603 and sub-display area 602 of the first column are used in the switching circuit (SW-COL1) when the foldable smartphone is unfolded. ) The switching operation of 661 pulls down to ground when the foldable smartphone is unfolded.

Five of the eight touch sensors (M11, M12, M13, M14, M15) formed in the main display area 601 of the first column are used in the switching circuit (SW-COL1) 661 when the foldable smartphone is folded. The switching operation pulls down the touch sensors (M11, M12, M13, M14, and M15) to ground.

Five touch sensors (S11, S12, S13, S14, S15) formed in the edge display area 603 and sub-display area 602 of the first column are used in the switching circuit unit (SW-COL1) when the foldable smartphone is folded. The switching operation of 661 enters the sensing operation state.

The touch sensors (M16, M17, M18) are not connected to the switching circuit unit (SW-COL1) 661, but are directly connected to the touch drive IC (TDI) 611 via the MUX 631.

FIG. 7A is a detailed circuit diagram of the switching circuit unit (SW COL-1) of the present invention, and FIG. 7B shows a table showing an example of a control signal for controlling the switch unit of the switching circuit unit.

FIG. 7A is a diagram showing a detailed circuit diagram of the switching circuit unit (SW COL-1) of the present invention.

The switching circuit unit 761 includes five switch units (731 to 731) that control sensing and ground switching of five touch sensors (M11 to M15) among the eight touch sensors (M11 to M18) generated on the main display area 701. 740) and five second switch units (741 to 750) that control the sensing and ground switching of five touch sensors (S11 to S15) created on the edge display area 703 and the sub-display area 702. do.

Each of the first switch unit and the second switch unit includes a plurality of transistors (eg, 731 and 736, 741 and 746). As an example, the transistor may be a P-channel transistor.

A plurality of transistors (731 and 736, 741 and 746) are connected to the first transistor 731, which is pulled down to ground when activated by a pair of control signals output from the touch drive IC 611, and the touch drive IC when activated. It includes a second transistor 736.

The first switch unit and the second switch unit are connected to each other in parallel.

By activating the output of the first switch unit by the SEL-MAIN (LOW) and SEL-SUB (HIGH) control signals (FIG. 7b), the sensing signals of the touch sensors (M11 to M15) are transmitted to the touch drive IC (611) through the MUX. Meanwhile, the second switch unit pulls down the touch sensors (S11 to S15) to ground and deactivates the connection with the touch drive IC (611).

By the SEL-MAIN (HIGH) and SEL-SUB (LOW) control signals (FIG. 7b), the first switch unit simultaneously pulls down the touch sensors (M11 to M15) to ground and disables the connection with the touch drive IC (611). Meanwhile, the second switch unit activates the output to connect the sensing signals of the touch sensors S11 to S15 to the touch drive IC 611 through the MUX.

The touch sensors (M16, M17, M18) are not connected to the switch unit but are directly connected to the touch drive IC (TDI) 611 through the MUX 631.

Figure 7b shows a table showing an example of a control signal for controlling the switch unit of the switching circuit unit.

As shown in the sensor block selection table of FIG. 7b, a touch sensor or edge display formed on the main display area is based on a combination of SEL-MAIN and SEL-SUB two control signals generated from the touch drive IC (TDI) 611. Touch sensors formed on the area and sub-display area are selected.

The number of touch sensors located in each column of the edge display area and the sub-display area of the present invention is the transistors (731-736, 732-737, 733-738, 734) formed in pairs in the first switch unit and the second switch unit. -739, 735-740, 741-746, 742-747, 743-748, 744-749, 745-750), which is limited to the number of touch sensors formed in the maximum main display area or less.

Therefore, even if a plurality of touch sensors is increased in the edge display area and sub-display area by the switching circuit unit (SW-COLn) of the present invention, the size of the MUX does not need to be increased to accommodate the increased touch sensor signal line.

As shown in FIGS. 6 and 7A, the number of touch sensors located in each column of the edge display area and the sub-display area is determined by the output signals of the first and second switch units located in the switching circuit unit (SW-COLn) It is the same as the number of MS11, MS12, MS13, MS14, and MS15).

For example, the output of the switching circuit (SW-COLn) is divided into MS11, MS12, MS13, MS14, MS15 and M16, M17, and M18, and the number of touch sensors located in each column of the edge display area and sub-display area is 3. As the number increases, the number of transistors formed in pairs located inside the first and second switch units located within the switching circuit unit (SW-COLn) increases by 3, and the output of the switching circuit unit (SW-COLn) is MS11, MS12, Transformed into MS13, MS14, MS15, MS16, MS17, and MS18. In this case, there is no need to increase the size of the MUX.

The output of the switching circuit of each column is input to the mux 631 to multiplex sensor signals corresponding to the same row. That is, the switching circuit output MS11 of the first column and the switching circuit output MS21 of the second column are multiplexed, and the outputs of MS12 and MS22, MS13 and MS23, and the remaining switching circuit units are also multiplexed.

In the case of SEL-MAIN (LOW) and SEL-SUB(LOW), and in the case of SEL-MAIN (HIGH) and SEL-SUB(HIGH), the output of the switch does not exist, so it is not used as a control signal.

Control signals for controlling the first switch unit and the second switch unit within the switching circuit unit are output from the touch drive IC 611.

In the case of SEL-MAIN (LOW) and SEL-SUB (HIGH), it is a control signal for selecting touch sensors in an unfolded state of the foldable smartphone, and the first switch unit senses the touch sensors (M11 to M15). It is connected to the touch drive IC 611, and the second switch unit pulls down the touch sensors S11 to S15 to ground.

In the case of SEL-MAIN (HIGH) and SEL-SUB (LOW), it is a control signal for selecting touch sensors in a folded state of the foldable smartphone, and the first switch unit pulls the touch sensors (M11 to M15) to ground. down, and the second switch unit is connected to the touch drive IC 611 to sense the touch sensors S11 to S15.

Figure 8 is a diagram showing a self-dot type touch sensor (a) of the present invention, and for comparison, shows a conventional mutual type touch sensor (a).

The self-dot method of the present invention determines whether or not there is a touch by using the voltage change depending on whether touch capacitance is generated in each touch sensor.

The conventional mutual method consists of a touch sensor in the form of a grid on the horizontal and vertical axes.

By adopting a self-dot type touch panel, it is possible to configure one touch panel for one flexible OLED of the present invention.

As such, the present invention is not limited to the above-described embodiments and the accompanying drawings, and it is known in the technical field of the present invention that various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of.

Claims (14)

As a foldable terminal device,
A single flexible display, the flexible display including a plurality of display areas that are independently activated depending on whether the foldable terminal device is folded or not; and
A plurality of displays including a self-dot type touch panel with a single touch drive IC that receives sensing signals from a plurality of touch sensors and extracts touch coordinates of the touch sensors A foldable terminal device having a flexible display having an area. In claim 1,
In the touch panel,
The plurality of touch sensors are deposited in a matrix format with at least one column and at least one row on each display area; and
The Touch Drive IC is a folder equipped with a flexible display having a plurality of display areas, where the touch drive IC receives the sensing signal from each of the touch sensors on the activated display area and extracts the coordinates of the touch sensor where the touch occurred. ble terminal device. In claim 2,
The touch panel is,
It further includes a plurality of switching circuit units that switch between a turn-on state that transmits the sensing signal of each touch sensor on the activated display area to the touch drive IC and a turn-off state that is pulled down to ground. ,
A foldable terminal device with a flexible display having a plurality of display areas, wherein each of the switching circuit units controls switching of touch sensors belonging to the same column of the touch panel. In claim 3,
The flexible display,
a first display area activated when the foldable terminal device is unfolded; and
Includes a second display area and a third display area that are activated when the foldable terminal device is folded,
The first display area is formed on the inner surface of the terminal device when the terminal device is unfolded, and the second display area is formed on an edge of the terminal device when the terminal device is folded. A foldable terminal device with a flexible display having a plurality of display areas, wherein the third display area is formed on the external surface of the terminal device when the terminal device is folded. In claim 4,
Each of the switching circuit units,
a plurality of first switch units that control sensing and ground switching of a plurality of first touch sensors generated on the first display area; and
A flexible display having a plurality of display areas, including a plurality of second switch units that control sensing and ground switching of a plurality of second touch sensors generated on the second display area and the third display area. A foldable terminal device. In claim 5,
Each of the first switch unit and the second switch unit includes two transistors,
The two transistors include a first transistor that is pulled down to ground when activated by a pair of control signals output from the touch drive IC, and a second transistor that is connected to the touch drive IC when activated. A foldable terminal device having a flexible display. In claim 6,
The first switch unit and the second switch unit are connected in parallel to each other,
By a first pair of control signals, the first switch unit connects to the touch drive IC to simultaneously sense the plurality of first touch sensors, and the second switch unit pulls down the plurality of second touch sensors to ground. And
By a second pair of control signals, the first switch unit simultaneously pulls down the plurality of first touch sensors to ground, and the second switch unit is connected to the touch drive IC to sense the plurality of second touch sensors. A foldable terminal device equipped with a flexible display having a plurality of display areas. In claim 7,
Depending on whether the flexible display is folded, one of the plurality of first touch sensors or the plurality of second touch sensors is activated by the first switch unit and the second switch unit, so that the touch drive The efficiency of the touch drive IC is increased by reducing the number of pins of the touch drive IC and the size of the memory by commonizing the active elements including the pins of the IC, memory, and an operational amplifier (Amp),
A foldable terminal device with a flexible display having multiple display areas, wherein the touch drive IC is composed of a single unit. In claim 1,
It further includes a display drive IC that activates at least one display area depending on whether the flexible display is folded,
A foldable terminal device with a flexible display having multiple display areas, wherein the display drive IC is composed of a single unit. In claim 1,
A foldable terminal device with a flexible display having a plurality of display areas, characterized in that the flexible display is an organic light-emitting diode (OLED) display. In claim 4,
The touch drive IC is,
Applying a driving signal of a predetermined voltage to the plurality of touch sensors deposited on the first display area for touch sensing of the plurality of touch sensors deposited on the first display area, and sensing of the plurality of touch sensors A foldable terminal device having a flexible display having a plurality of display areas and receiving signals. In claim 11,
A foldable terminal device equipped with a flexible display having a plurality of display areas, wherein the sensing signal has information on a voltage change due to a touch capacitance (Ct) generated by sensing of an arbitrary touch sensor. In claim 12,
The touch panel is,
A foldable terminal device with a flexible display having multiple display areas, further comprising a plurality of touch sensor signal lines for transmitting the sensing signal from each touch sensor to the touch drive IC. In claim 13,
The touch panel is,
A foldable terminal device with a flexible display having multiple display areas, further comprising a plurality of muxes that multiplex the output of the same row of each of the switching circuit units and connect them to the touch drive IC. .