KR20170002079A - Bendable display and driving method thereof - Google Patents

Abstract

The present invention relates to a bendable display and a method for driving the same. According to the present invention, the bendable display includes a bendable touch screen panel, a sensor driving circuit, and a switch array. The bendable touch screen panel has multiple capacitors and channels connected to the multiple capacitors. The sensor driver circuit supplies a driving signal to the capacitors through channels and senses a change in the capacitance of the capacitors. The switch array connects the channels to a sensor drive circuit during a touch sensing period and connects some of the channels to a base voltage source or floats during a bending sensing period. The sensor driving circuit senses a touch input based on first capacitors during the touch sensing period and senses whether bending of the bendable touch screen panel is sensed based on at least one second capacitance during the bending sensing period.

Description

≪ Desc / Clms Page number 1 > BENDABLE DISPLAY AND DRIVING METHOD THEREOF &

The present invention relates to a Ben Double display including a touch screen panel and a driving method thereof.

A user interface (UI) enables a user (a user) to communicate with various electric or electronic devices, allowing the user to easily control the device as desired. Representative examples of the user interface include a keypad, a keyboard, a mouse, an on-screen display (OSD), a remote controller having infrared communication or radio frequency (RF) communication functions. User interface technology has been developed to enhance the user's sensibility and ease of operation. Recently, the user interface has evolved into a touch UI, a voice recognition UI, a 3D UI, and the like.

Touch UI is becoming a necessity for portable information devices, and it is applied to almost all home appliances. The electrostatic capacity type touch sensing system is advantageous in that the structure of the touch screen panel is higher in durability and sharpness than the conventional resistive type, and can be applied to various applications because multi-touch recognition and proximity touch recognition are possible.

Also, recently, a bendable display has been commercialized. For example, referring to FIG. 1, a Ben Double display 10 reproduces an input image on a display area 2 of a display panel on which a plastic OLED is formed. Plastic OLEDs are formed on flexible plastic substrates. The Ben Double Display 10 has various advantages in terms of portability and durability.

The BenDouble display 10 further includes a touch screen panel including a touch sensor, and is applied to various fields such as a TV (Television), an automobile display, and a wearable device as well as a mobile device such as a smart phone and a tablet PC.

In the Ben Double display 10 including the touch screen panel, bending sensing parts 3a and 3b for detecting whether or not to bend can be provided. The bending sensing portions 3a and 3b include one or more sensors. For example, the bending sensing units 3a and 3b include a proximity sensor, a magnetic sensor, an infrared sensor, an optical sensor, and the like. The bending sensing units 3a and 3b include an upper sensor 3a and a lower sensor 3b respectively provided on upper and lower sides of a Ben Double display. The upper sensor 3a and the lower sensor 3b are provided at corresponding positions in the Ben Double display bending. It is possible to detect whether the upper sensor 3a and the lower sensor 3b bend when the Ben double display 10 is bent or brought into contact with or adjacent to each other within a predetermined distance. U.S. Patent Application Publication No. US13 / 455341 (Apr. 25, 2012) discloses a foldable display device structure including a bending sensing portion using a magnet.

Such bending sensing parts 3a and 3b are provided in the non-display area 1 of the Ben Double display. That is, the bending sensing units 3a and 3b are provided in an area other than the display area 2 where the image is implemented. Accordingly, when the bending sensing units 3a and 3b are provided, the area of the display area 2 that can occupy the same size display is relatively reduced. Further, since the bending sensing units 3a and 3b are provided, a separate sensor and a driving unit for driving the sensor are added, thereby increasing the manufacturing cost of the display.

The present invention provides a Ben double display and a driving method thereof for detecting bending using a touch screen panel for detecting a touch input.

In order to achieve the above object, a Ben double display according to a preferred embodiment of the present invention includes a touch screen panel for sensing whether a touch input is performed, sensing at least one of bending, bending position, and bending angle, A driving circuit, and a switch array.

The Ben double display according to the preferred embodiment of the present invention can be time-divisionally driven by the sensor driving circuit in a touch sensing period and a bending sensing period.

The Ben double display according to the preferred embodiment of the present invention can sense various events by sensing the bending position and / or the bending angle.

The present invention can detect bending by using a touch screen panel for detecting a touch input. As a result, it is not necessary to provide a separate sensor for detecting whether or not to bend, so that the display area can be relatively increased and the manufacturing cost can be reduced.

The present invention can detect whether the bendable display is bent or not, and inactivate the bendable display area. As a result, unnecessary power consumption that may occur due to the activation of the display area can be reduced even when the display area is not recognized from the outside by bending the Ben double display. In addition, it is possible to prevent a change in the electrostatic capacitance occurring between adjacent touch electrodes as the electrodes are bent, thereby reducing the malfunction caused thereby.

The present invention can detect the bending position and the bending angle of the Ben double display, and can perform various events based on the sensed bending position and the bending angle. As a result, the usability of the user can be improved, and various contents can be realized.

The Ben Double display according to the present invention is driven in a time division manner in a touch sensing period and a bending sensing period for each frame through a sensor driving circuit, and the bending sensing period can be driven shorter than the touch sensing period. As a result, the touch sensing period can be relatively sufficiently secured, and the touch report rate can be prevented from being reduced. This makes it possible to prevent a decrease in touch sensitivity due to time division driving for each frame period.

1 and 2 are views for explaining a display according to the prior art.
3 is a schematic view of a Ben Double display according to the present invention.
FIG. 4 is a view schematically showing a bent display of a Ben Double display according to the present invention.
5 to 8 are views for explaining the configuration and driving method of the Ben double display according to the first embodiment of the present invention.
9 to 12 are views for explaining a configuration and a driving method of a Ben Double display according to a second embodiment of the present invention.
13 is a view for explaining a driving method of a Ben double display according to a third embodiment of the present invention.
FIGS. 14 to 19 are views for explaining a configuration and a driving method of a Ben Double display according to a fourth embodiment of the present invention.
20 to 28 are views for explaining a configuration and a driving method of a Ben Double display according to a fifth embodiment of the present invention.
29 to 31 are diagrams for explaining a configuration and a driving method of a Ben Double display according to a sixth embodiment of the present invention.
32 and 33 are views for explaining the operating state of the Ben Double display according to the seventh embodiment of the present invention.
FIG. 34 is a view for explaining the operating state of the Ben Double display according to the eighth embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description, a detailed description of known technologies or configurations related to the present invention will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured.

3 is a schematic view of a Ben Double display according to the present invention.

The Ben double display according to the present invention includes a display panel (DIS), a display driving circuit, a Ben double touch screen panel (TSP), a sensor driving circuit (60), and a switch array (70).

The display panel DIS includes pixels for reproducing an input image. The display panel (DIS) is made of a bendable material. For example, the pixels may include, but are not limited to, a plastic organic light emitting diode (OLED) device formed on a flexible plastic substrate. Hereinafter, a display panel (DIS) implemented by a plastic OLED element will be described as an example.

The pixel array of the display panel DIS includes pixels formed in the pixel region defined by the data lines (D1 to Dm, m is a positive integer) and the gate lines (G1 to Gn, n is a positive integer) . Each of the pixels includes an OLED which is a self-luminous element. The OLED includes an anode electrode and a cathode electrode, and an organic compound layer interposed therebetween. The organic compound layer includes an emission layer (EML), and may further include a common layer. The common layer may include at least one selected from the group consisting of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL) Or more.

The display panel DIS arranges the pixels each including the OLED in a matrix form and adjusts the brightness of the pixels according to the gradation of the video data. Each of the pixels includes a driving thin film transistor (hereinafter referred to as a TFT) that controls a driving current flowing in the OLED according to a gate-source voltage, a storage that holds the gate-source voltage of the driving TFT constant for one frame A capacitor (Storage Capacitor), and at least one switch TFT for programming the gate-source voltage of the driving TFT in response to the gate pulse (or scan pulse). The driving current is determined by the gate-source voltage of the driving TFT according to the data voltage and the threshold voltage of the driving TFT, and the luminance of the pixel is proportional to the magnitude of the driving current flowing in the OLED.

The display driving circuit includes a data driving circuit 12, a gate driving circuit 14, and a timing controller 20, and writes the video data voltage of the input image to the pixels of the display panel DIS. The data driving circuit 12 converts the digital video data RGB input from the timing controller 20 into an analog gamma compensation voltage to generate a data voltage. The data voltage output from the data driving circuit 12 is supplied to the data lines D1 to Dm. The gate driving circuit 14 sequentially supplies the gate pulses in synchronization with the data voltages to the gate lines G1 to Gn to select the pixels of the display panel DIS to which the data voltages are written.

The timing controller 20 inputs a timing signal such as a vertical synchronizing signal Vsync, a horizontal synchronizing signal Hsync, a data enable signal DE and a main clock MCLK input from the host system 50 And synchronizes the operation timings of the data driving circuit 12 and the gate driving circuit 14 with each other. The data timing control signal for controlling the data driving circuit 12 includes a source sampling clock (SSC), a source output enable (SOE) signal, and the like. The gate timing control signal for controlling the gate drive circuit 14 includes a gate start pulse GSP, a gate shift clock signal, a gate output enable signal GOE, do.

The host system 50 may be implemented as any one of a television system, a set-top box, a navigation system, a DVD player, a Blu-ray player, a personal computer (PC), a home theater system, and a phone system. The host system 50 includes a system on chip (SoC) with a built-in scaler to convert the digital video data RGB of the input image into a format suitable for display on the display panel DIS. The host system 50 transmits timing signals (Vsync, Hsync, DE, MCLK) to the timing controller 20 together with the digital video data. The host system 50 executes an application program associated with the touch position information XY input from the sensor driving circuit 60. [ Further, the host system 50 executes the associated application program in response to the bending information received from the sensor driving circuit 60.

The sensors are arranged in the Ben Double Touch Screen Panel (TSP). The benz double touch screen panel (TSP) may be formed as an add-on type, an on-cell type, or an integrated type according to its structure. In the top plate attaching type, a touch sensor is attached to an upper plate of a display device after separately manufacturing a display device and a touch sensor. The top plate integral type is a method of directly forming elements constituting the touch sensor on the surface of the upper substrate of the display device. The built-in type has a built-in touch sensor inside the display device to achieve a thin display device and enhance durability. The Ben double display according to the present invention can use various types of Ben double touch screen panels (TSP) according to the designer's choice.

The sensors are driven by a mutual capacitance sensor or a self capacitance sensor. The mutual capacitance sensor includes mutual capacitance formed between the two electrodes. The mutual capacitance sensing circuit applies a driving signal (or a stimulus signal) to one of the two electrodes Tx and senses the touch input based on the amount of charge change of the mutual capacitance through the other electrode Rx. As the conductors approach the mutual capacitance, the amount of charge in the mutual capacitance is reduced and the touch input can be sensed. The capacitive sensor includes a capacitance formed in each of the sensor electrodes. The capacitance sensing circuit supplies charge to each of the sensor electrodes and senses the touch input based on the charge variation of the capacitance. When the conductor comes close to the magnetic capacity, the capacitance due to the conductor is connected in parallel to the capacity of the sensor, so that the capacitance value increases. Therefore, in the case of the magnetic capacity, the capacitance value of the sensor increases when the touch input is sensed.

The Ben Double Touch Screen Panel (TSP) is substantially the same as the existing touch screen panel structure in this respect, since it can be implemented as a conventional mutual capacitance type or self capacitance type touch screen panel. The ben double touch screen panel (TSP) may include a plurality of capacitances and channels connected to the capacitive electrodes. In explaining the preferred embodiment of the present invention, the electrostatic capacity will be divided into a first electrostatic capacity and a second electrostatic capacity according to functions to be performed. Here, it should be noted that the configuration for forming the first and second capacitances is not a newly added configuration for the Ben double touch screen panel (TSP). It should also be noted that the first and second capacitances are not necessarily distinct. The touch input of the user can be sensed based on the first capacitance, and the bendability, bending position, and bending angle of the Ben double display can be sensed based on the second capacitance. In the following embodiments, the first capacitance is described as a "mutual capacitance sensor" or a "magnetic capacitance sensor ". The second capacitance is described as a "bending capacitance sensor ".

The sensor driving circuit 60 may include a mutual capacitance sensing circuit or a capacitance sensing circuit so that the sensors can be driven by mutual capacitance sensors or by magnetic capacitance sensors. The sensor driver circuit 60 and the switch array 70 can be integrated into one ROIC (read-out integrated circuit). The sensor driving circuit 60 analyzes the capacitance change amount of the sensor by using the algorithm executing unit 40 that executes the preset coordinate calculation algorithm to determine the touch input position. Further, the sensor driving circuit 60 determines whether or not to bend using the algorithm executing unit 40 that executes a predetermined bending determination algorithm, and calculates the bending angle.

The switch array 70 switches the signal transmission path between the sensor driving circuit 60 and the lines LN of the Ben Double touch screen panel TSP. The switch array 70 connects or disconnects the lines LN of the VEN double touch screen panel TSP to the driving signal generating unit 32, the sensing unit 34, or the base voltage source Vss, . The floating means that the current path between the line LN of the Ben double touch screen panel TSP and the channel of the sensor driving circuit 60 is cut off and the channel of the sensor driving circuit 60 is in the high impedance state. In the case of the capacitance sensing circuit, the driving signal generating portion 32 may be omitted.

The driving signal generating unit 32 supplies driving signals to electrodes used as Tx channels when driving the sensors. The sensing unit 34 may be included in both the capacitive sensing circuit and the capacitive sensing circuit. The mutual capacitance sensing circuit converts the amount of capacitance change of the sensors into a digital value in synchronization with the driving signal applied to the sensors from the sensing unit 34. [ The capacitance sensing circuit supplies charge to the sensors and senses the amount of capacitance change of the sensors and converts them into digital values. The mutual capacitance sensing circuit or the capacitance sensing circuit is connected to an analog-to-digital converter (ADC) for converting an analog signal received from the touch sensor into digital data. The base voltage source Vss applies a ground voltage to the electrodes used as the GND channel when driving the sensors.

The timing generating section 36 generates timing signals for controlling the operation timing of the drive signal generating section 32, the sensing section 34, and the switch array 70. The timing generator 36 receives the synchronization signal from the timing controller 20 and can be synchronized with the timing controller 20. [ The timing generator 36 may be embedded in the timing controller 20. [

The algorithm executing unit 40 executes a preset coordinate calculation algorithm to compare the digital data received from the sensing unit 34 with a preset threshold value. The algorithm executing section 40 executes a predetermined bending determination algorithm to compare the digital data received from the sensing section 34 with a preset threshold value. Any algorithm known for coordinate calculation algorithms and bending determination algorithms is possible. The coordinate calculation algorithm detects digital data above a threshold value. The digital data above the threshold value is judged as the touch data obtained from the sensors in which the touch input is sensed. The bending determination algorithm detects digital data above a threshold value. The digital data exceeding the threshold value is judged as the touch data obtained from the sensors where the bending is detected. The algorithm executing section 40 calculates the touch input position. Further, the algorithm executing section 40 judges whether or not to bend, and calculates the coordinates of the bending position. The algorithm executing section 40 transmits the coordinate information XY to the host system 50. [ In addition, the algorithm executing section 40 transmits the bending information to the host system 50. The bending information includes bending angle and bending angle information.

The Ben double display according to the present invention includes the above-mentioned Ben double touch screen panel (TSP), enabling operation of an intuitive display through the user's finger or the like. In addition, it is possible to detect whether the ben double display according to the present invention is bent by using the above-mentioned ben double touch screen panel (TSP).

FIG. 4 is a view schematically showing a bent display of a Ben Double display according to the present invention.

Referring to FIG. 4, the Ben double display according to the present invention uses the Ben double touch screen panel (TSP) for operating the display to detect whether or not the bending is performed. When the Ben double display according to the present invention is bent, the upper part UP and the lower part BP of one side of the Ben double touch screen panel TSP are brought into contact with each other. When the benz double display is bent so that the touch electrodes disposed in the upper part UP and the lower part BP of the benz double touch screen panel TSP are positioned adjacent to each other, a capacitance is generated between adjacent electrodes. The Ben double display according to the present invention can determine whether bending is caused by sensing a change in capacitance between adjacent electrodes. The Ben double display according to the present invention can be time-divisionally driven by dividing the touch sensing period for the display operation and the bending sensing period for detecting whether the bending is performed for each frame. Hereinafter, the preferred embodiments of the present invention will be described in detail.

The Ben double display according to the present invention does not have a separate bending sensing portion (3a, 3b in FIG. 1) for detecting whether or not the bending is detected. Therefore, problems that occur with the conventional bending sensing parts (3a and 3b in FIG. 1), for example, the non-display area where the bending sensing parts (3a and 3b in FIG. 1) are mounted increases, It is possible to prevent a problem that the area is relatively reduced, a manufacturing cost increase due to the module constituting the bending sensing portion (3a and 3b in FIG. 1) and the driving portion for driving the module.

In addition, the ben double display according to the present invention can detect whether or not the bendable display is bent, and can switch the display area to be activated or deactivated in conjunction with the bendable display. That is, when the display area in which the image or the like is implemented is not recognized from the outside, the display area can be inactivated by bending the Ben double display including the touch screen panel. This makes it possible to prevent an unnecessary increase in power consumption of the Ben Double display. Further, when the ben double display is bent, an undesired capacitance change is sensed between the touch sensors in areas where the two sides are in contact with each other, thereby preventing a malfunction from occurring.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the preferred embodiments of the present invention, it should be noted that the description of the redundant elements may be omitted for convenience of description and redundant explanations.

≪ Embodiment 1 >

A Ben double display according to a first embodiment of the present invention will be described with reference to FIGS. 5 to 8. FIG. 5 to 8 are views for explaining the configuration and driving method of the Ben double display according to the first embodiment of the present invention.

Referring to FIG. 5, the Ben double display according to the first embodiment of the present invention includes a Ben Double touch screen panel TSP1, a mutual capacitance sensing circuit 160, and a switch array 170.

The Ben double touch screen panel TSP1 includes mutual capacitance sensors Cm. The mutual capacitance sensor Cm includes a mutual capacitance formed between the first and the column line electrodes 152 and 154. The row line electrodes 152 are arranged in a first direction (e.g., the X-axis direction). The column line electrodes 154 are arranged in a second direction (e.g., Y-axis direction) intersecting with the line electrodes 152. [ In FIG. 5, five row line electrodes and column line electrodes 152 and 154 are arranged, respectively, but the present invention is not limited thereto.

The mutual capacitance sensing circuit 160 includes a driving signal generating unit 132, a sensing unit 134, an algorithm executing unit 140, and a timing generating unit 136. Each of the channels of the mutual capacitance sensing circuit 160 is connected to the line electrodes 152 and the column line electrodes 154 via the switch array 170.

6 and 7, the Ben double display according to the first exemplary embodiment of the present invention may be time-division driven in a touch sensing period ST1 and a bending sensing period ST2 in each frame period. The touch sensing period ST1 is a period during which a touch input of the user is sensed and an application or the like of the display can be operated in conjunction with the sensed touch input. The bending sensing period ST2 is a period during which the bendable display is sensed.

The bending sensing period ST2 is preferably shorter than the touch sensing period ST1. In the Ben double display according to the first embodiment of the present invention, the bending sensing period ST2 may be reduced for each frame to relatively secure the touch sensing period ST1, Can be prevented from decreasing. The first embodiment of the present invention can provide a Ben double display in which a decrease in touch sensitivity due to time division driving is prevented for each frame period.

The row line electrodes 152 and the column line electrodes 154 are driven to drive the line electrodes 152 and the column line electrodes 154 by dividing the touch sensing period ST1 and the bending sensing period ST2 The Tx channel to which the signal is applied, the Rx channel where the charge is received, the GND channel to which the ground voltage is applied, or the floating line. The driving signal generating unit 132, the sensing unit 134, or the base voltage source Vss may be connected to or connected to the row line electrodes 152 and the column line electrodes 154, respectively.

In the touch sensing period ST1, the low line electrodes 152 are used as Tx channels of the inter-capacitive sensing circuit 160 to which the driving signal is applied. The Tx channels are connected to the line electrodes 152 through the switch array 170. The column line electrodes 154 are used as the Rx channels of the inter-capacitive sensing circuit 160 where the charge of the mutual capacitance sensor Cm is received. The Rx channels are connected to the column line electrodes 154 via the switch array 170.

The driving signal applied from the driving signal generating unit 132 is supplied to the row electrodes 152 of the ben double touch screen panel TSP1 to supply electric charges to the mutual capacitance sensors Cm. Charges from the mutual capacitance sensors Cm are received through the column line electrodes 154 in synchronization with the driving signal. When a conductor including a user's finger or the like is touched to the ben double touch screen panel TSP1, at least a part of the electric field is blocked by the conductor and the amount of charge of the mutual capacitance sensor Cm is reduced. Therefore, in the touch sensing period ST1, the touch input can be sensed based on the amount of change in charge before and after the touch input. The mutual capacitance sensing circuit 160 may determine whether or not the touch input is performed through a change in mutual capacitance formed between the line electrode 152 and the column line electrode 154 during the touch sensing period ST1.

In the bending sensing period ST2, whether or not the ben double display is bent can be detected through the bending capacity sensors Cb of the ben double touch screen panel TSP1. For example, referring to FIG. 8, when the area where the third line electrode 152_3 is disposed is the bending center area BCA, the Ben double display has the second Direction. ≪ / RTI > The first row line electrode 152_1 and the second row line electrode 152_2 located above the bending center region BCA are connected to the fifth row line electrode 152_5 And the fourth line electrode 152_4.

First, the line electrode 152_1 and the second low line electrode 152_2 are used as Tx channels of the inter-capacitive sensing circuit 160 to which a driving signal is applied. The Tx channels are connected to the first line electrode 152_1 and the second line electrode 152_2 through the switch array 170. Fourth line electrode 152_4 and fifth line electrode 152_5 are used as the Rx channels of the inter-capacitance sensing circuit 160 where the charge of the bending capacitance sensor Cb is received. The Rx channels are connected to the fourth line electrode 152_4 and the fifth line electrode 152_5 through the switch array 170. The switch array 170 may float or connect the third line electrode 152_3 and the column line electrodes 154 to the ground voltage source Vss.

In the bending sensing period ST2, the driving signal applied from the driving signal generating unit 132 is supplied to the first row line electrode 152_1 and the second row line electrode 152_2 of the benzodi screen panel TSP1 And supplies electric charges to the corresponding bending capacitance sensors Cb. Charges from the bending capacitance sensors Cb are received through the fourth line electrode 152 and the fifth line electrode 152_5 in synchronization with the drive signal.

A change in electrostatic capacitance occurs between the first line electrode 152_1 and the fifth line electrode 152_5 and between the second line electrode 152_2 and the fourth line electrode 152_4, Can be detected. The mutual capacitance sensing circuit 160 can determine whether to bend through the capacitance formed between the line electrodes 152 during the bending sensing period ST2.

In the description of the first embodiment, it is assumed that the bending center region BCA is the third line electrode 152_3, but the present invention is not limited thereto. The bending center region BCA may be defined as an area in which at least one row line electrode 152 is disposed and may be defined as an area between adjacent row line electrodes 152 in parallel. In the bending sensing period ST2, the low line electrodes 152 provided on either the upper or lower side of the bending center region BCA are defined as the Tx channel, The line electrodes 152 are driven by the Rx channel to sense the bending state.

It is also assumed that there are a plurality of row electrodes used as the Tx channel of the mutual capacitance sensing circuit and a plurality of row electrodes used as the Rx channel. However, the present invention is not limited thereto, and the Tx channel and / At least one line electrode may be sufficient. For example, the first line electrode 152_1 may be used as a Tx channel, and the fifth line electrode 152_5 may be used as an Rx channel to sense the bending state. At this time, the low line electrodes not used for the Tx channel and / or the Rx channel can be floated through the switch array or connected to the ground voltage source.

≪ Embodiment 2 >

9 to 12, a Ben double display according to a second embodiment of the present invention will be described. 9 to 12 are views for explaining a configuration and a driving method of a Ben Double display according to a second embodiment of the present invention.

9, the Ben double display according to the second embodiment of the present invention includes a Ben Double touch screen panel TSP2, a mutual capacitance sensing circuit 260, and a switch array 270. In FIG.

The Ben double touch screen panel TSP2 includes mutual capacitance sensors Cm. The mutual capacitance sensor Cm includes a mutual capacitance formed between the first and the column line electrodes 252 and 254. The line electrodes 252 are arranged in the first direction (e.g., the X-axis direction). The column line electrodes 254 are arranged in a second direction (e.g., the Y-axis direction) intersecting with the line electrodes 252. In FIG. 9, five row line electrodes and column line electrodes 252 and 254 are arranged, but the present invention is not limited thereto.

The mutual capacitance sensing circuit 260 includes a driving signal generating unit 232, a sensing unit 234, an algorithm executing unit 240, and a timing generating unit 236. Each of the channels of the mutual capacitance sensing circuit 260 is connected to the line electrodes 252 and the column line electrodes 254 through the switch array 270.

10 and 11, the Ben double display according to the second exemplary embodiment of the present invention includes a touch sensing period ST1, a first bending sensing period ST2_1, and a second bending sensing period ST2_2. The touch sensing period ST1 is a period during which a touch input of the user is sensed and an application or the like of the display can be operated in conjunction with the sensed touch input. The first bending sensing period ST2_1 is a period during which the bendable display is bent in the first direction. The second bending sensing period ST2_2 is a period during which the bendable display is bendable in the second direction.

The bending sensing period ST2 is preferably shorter than the touch sensing period ST1. In the Ben double display according to the second embodiment of the present invention, the bending sensing period (ST2) can be reduced for each frame to relatively secure the touch sensing period (ST1), thereby preventing the touch report rate from decreasing . The second embodiment of the present invention can provide a Ben double display in which a decrease in touch sensitivity due to time division driving is prevented for each frame period.

In order to drive the line electrodes 252 and the column line electrodes 254 by dividing the touch sensing period ST1, the first bending sensing period ST2_1 and the second bending sensing period ST2_2, 252 and the column line electrodes 254 should operate as a Tx channel to which a driving signal is applied, an Rx channel where charges are received, a GND channel to which a ground voltage is applied, or a floating line. The driving signal generating unit 232, the sensing unit 234, or the base voltage source Vss may be connected or plotted to the row line electrodes 252 and the column line electrodes 254, respectively.

In the touch sensing period ST1, the low line electrodes 252 are used as Tx channels of the inter-capacitance sensing circuit 260 to which the driving signal is applied. The Tx channels are connected to the line electrodes 252 through switch array 270. The column line electrodes 254 are used as the Rx channels of the inter-capacitive sensing circuit 260 where the charge of the mutual capacitance sensor Cm is received. The Rx channels are connected to the column line electrodes 254 through the switch array 270.

The driving signal applied from the driving signal generating unit 232 is supplied to the row electrodes 252 of the benz double touch screen panel TSP2 to supply electric charges to the mutual capacitance sensors Cm. Charges from the mutual capacitance sensors Cm are received through the column line electrodes 254 in synchronization with the driving signal. When a conductor including a user's finger or the like is touched to the V-double touch screen panel TSP2, at least a part of the electric field is blocked by the conductor, and the amount of charge of the mutual capacitance sensor Cm is reduced. Therefore, in the touch sensing period ST1, the touch input can be sensed based on the amount of change in charge before and after the touch input. The mutual capacitance sensing circuit 260 may determine whether or not the touch input is performed through a change in mutual capacitance formed between the line electrode 252 and the column line electrode 254 during the touch sensing period ST1.

In the first bending sensing period ST2_1, whether or not the first bending of the ben double display can be sensed through the first bending capacitive sensors Cb_1 of the ben double touch screen panel TSP2. For example, referring to FIG. 12A, when the area where the third line electrode 252_3 is disposed is assumed to be the first bending center area BCA_1, the Ben double display has the first bending center area BCA_1 along the second direction. At this time, the first row line electrode 252_1 and the second row line electrode 252_2 located above the first bending central region BCA_1 are connected to the fifth bending central region BCA_1, And is positioned adjacent to the line electrode 252_5 and the fourth line electrode 252_4.

First, the line electrode 252_1 and the second low line electrode 252_2 are used as Tx channels of the inter-capacitive sensing circuit 260 to which a driving signal is applied. The Tx channels are connected to the first low line electrode 252_1 and the second low line electrode 252_2 through the switch array 270. Fourth line electrode 252_4 and fifth line electrode 252_5 are used as Rx channels of the inter-capacitance sensing circuit 260 where the charge of the first bending capacitance sensor Cb_1 is received. The Rx channels are connected to the fourth line electrode 252_4 and the fifth line electrode 252_5 through the switch array 270. At this time, the switch array 270 floats or connects the third line electrode 252_3 and the column line electrodes 254 to the ground voltage source Vss.

In the first bending sensing period ST2_1, the driving signal applied from the driving signal generating unit 232 is applied to the first low-line electrode 252_1 and the second low-line electrode 252_2 And supplies electric charges to the corresponding first bending capacitance sensors Cb_1. The charges from the first bending capacitance sensors Cb_1 are received through the fourth line electrode 252 and the fifth line electrode 252_5 in synchronization with the driving signal.

A change in electrostatic capacitance occurs between the first line electrode 252_1 and the fifth line electrode 252_5 and between the second line electrode 252_2 and the fourth line electrode 252_4, Can be detected. The mutual capacitance sensing circuit 260 may determine whether the first bending is performed through the capacitance formed between the line electrodes 252 during the first bending sensing period ST2_1.

In the second bending sensing period ST2_2, whether or not the second bending of the ben double display can be sensed through the second bending capacitive sensors Cb_2 of the ben double touch screen panel TSP2. For example, referring to FIG. 12 (b), when the region where the third column line electrode 254_3 is disposed is assumed to be the second bending center region BCA_2, the Ben double display has the second bending center region BCA_2 may be bent along the first direction. At this time, the first column line electrode 254_1 and the second column line electrode 254_2 located above the second bending central region BCA_2 are connected to the fifth bending central region BCA_2, And is adjacent to the line electrode 254_5 and the fourth column line electrode 254_4.

The first column line electrode 254_1 and the second column line electrode 254_2 are used as Tx channels of the inter-capacitance sensing circuit 260 to which a driving signal is applied. The Tx channels are connected to the first column line electrode 254_1 and the second column line electrode 254_2 through the switch array 270. The fourth column line electrode 254_4 and the fifth column line electrode 254_5 are used as the Rx channels of the inter-capacitive sensing circuit 260 in which the charge of the second bending capacitance sensor Cb_2 is received. Rx channels are connected to the fourth column line electrode 254_4 and the fifth column line electrode 254_5 through the switch array 270. [ At this time, the switch array 270 floats or connects the third column line electrodes 254_3 and the low line electrodes 252 to the ground voltage source Vss.

In the second bending sensing period ST2_2 the driving signal applied from the driving signal generator 232 is applied to the first column line electrode 254_1 and the second column line electrodes 254_2 And supplies electric charges to the corresponding second bending capacitance sensors Cb_2. Charges from the second bending capacitance sensors Cb_2 are received through the fourth column line electrode 254 and the fifth column line electrode 254_5 in synchronization with the drive signal.

A capacitance change occurs between the first column line electrode 254_1 and the fifth column line electrode 254_5 and between the second column line electrode 254_2 and the fourth column line electrode 254_4, 2 It is possible to sense whether or not bending. The mutual capacitance sensing circuit 260 may determine whether or not the second bending is performed through the capacitance formed between the column line electrodes 254 during the second bending sensing period ST2_2.

In the description of the second embodiment, it is assumed that the bending center region BCA is the third line electrode 252_3 and the third column line electrode 254_3, but the present invention is not limited thereto. The bending center region BCA may be defined as at least one region in which at least one row line electrode 252 is disposed and / or at least one region in which at least one or more column line electrodes 254 are disposed, May be defined as a region between the electrodes 252 and / or a region between the adjacent column line electrodes 254 in parallel. The row line electrodes 252 provided on either the upper or lower side of the bending center region BCA are formed on the basis of the defined bending center region BCA in the first and second bending sensing periods ST2_1 and ST2_2, And the column line electrodes 254 are driven by the Tx channel while the row line electrodes 252 and the column line electrodes 254 provided at the rest are driven by the Rx channel to sense the first and second bending.

≪ Third Embodiment >

Referring to FIG. 13, a Ben double display according to a third embodiment of the present invention will be described. 13 is a view for explaining a driving method of a Ben double display according to a third embodiment of the present invention.

The third embodiment of the present invention is substantially the same as that of the second embodiment except for its driving method. Referring to FIG. 13, the Ben double display according to the third embodiment of the present invention is alternately driven in units of two frames including a first frame and a second frame. The first frame is time-division driven in the touch sensing period ST1 and the first bending sensing period ST2_1. The second frame is time-division driven by the touch sensing period ST1 and the second bending sensing period ST2_2.

It is preferable that the first bending sensing period ST2_1 and the second bending sensing period ST2_2 and / or both are shorter than the touch sensing period ST1. In the Ben double display according to the third embodiment of the present invention, the touch sensing period (ST1) is sufficiently ensured so that the touch report rate is not reduced. In addition, since the third embodiment is divided into two periods and divided into two periods for each frame period, a more sufficient touch sensing period (ST1) is obtained as compared with the case where the divided periods are divided into three periods for each frame period as in the case of the second embodiment . Accordingly, the third embodiment can provide a ben double display that more effectively prevents a decrease in touch sensitivity due to time division driving for each frame period.

<Fourth Embodiment>

In the first to third embodiments of the present invention, when a bending center area, which is a standard for bending, is defined in advance and is bent based on a defined bending center area, . In contrast, the fourth embodiment of the present invention discloses a configuration and a driving method for detecting bending if the bending center area is not specified in advance, as shown in FIG. Accordingly, the fourth embodiment of the present invention can provide a Ben Double display capable of sensing bending position as well as sensing bending position.

A Ben double display according to a fourth embodiment of the present invention will be described with reference to FIGS. 15 to 19. FIG. FIGS. 15 to 19 are views for explaining a configuration and a driving method of a Ben Double display according to a fourth embodiment of the present invention.

Referring to FIG. 15, a Ben Double display according to a fourth embodiment of the present invention includes a Ben Double touch screen panel TSP4, a mutual capacitance sensing circuit 460, and a switch array 470.

The Ben double touch screen panel TSP4 includes mutual capacitance sensors Cm. The mutual capacitance sensor Cm includes a mutual capacitance formed between the first and the column line electrodes 452 and 454. The line electrodes 452 are arranged in the first direction (e.g., the X-axis direction). The column line electrodes 454 are arranged in a second direction (e.g., the Y-axis direction) intersecting with the line electrodes 452. In FIG. 15, five row line electrodes and column line electrodes 452 and 454 are arranged, but the present invention is not limited thereto.

The mutual capacitance sensing circuit 460 includes a driving signal generating unit 432, a sensing unit 434, an algorithm executing unit 440, and a timing generating unit 436. Each of the channels of the mutual capacitance sensing circuit 460 is connected to the line electrodes 452 and the column line electrodes 454 through the switch array 470.

16 and 17, the Ben double display according to the fourth exemplary embodiment of the present invention may be time-division driven in the touch sensing period ST1 and the bending sensing period ST2 for each frame period. The touch sensing period ST1 is a period during which a touch input of the user is sensed and an application or the like of the display can be operated in conjunction with the sensed touch input. The bending sensing period ST2 is a period during which the bendable display is sensed. The bending sensing period ST2 is preferably shorter than the touch sensing period ST1. In the Ben double display according to the fourth embodiment of the present invention, the bending sensing period (ST2) can be reduced for each frame to relatively secure the touch sensing period (ST1), thereby preventing the touch report rate from decreasing . The fourth embodiment of the present invention can provide a Ben double display in which a decrease in touch sensitivity due to time division driving is prevented for each frame period.

The row line electrodes 452 and the column line electrodes 454 are driven to drive the line electrodes 452 and the column line electrodes 454 by dividing the touch sensing period ST1 and the bending sensing period ST2 The Tx channel to which the signal is applied, the Rx channel where the charge is received, the GND channel to which the ground voltage is applied, or the floating line. The driving signal generating unit 432, the sensing unit 434, or the base voltage source Vss may be connected to the row line electrodes 452 and the column line electrodes 454, respectively, or may be floated.

In the touch sensing period ST1, the low line electrodes 452 are used as Tx channels of the inter-capacitance sensing circuit 460 to which the driving signal is applied. The Tx channels are connected to the line electrodes 452 through a switch array 470. The column line electrodes 454 are used as the Rx channels of the inter-capacitive sensing circuit 460 where the charge of the mutual capacitance sensor Cm is received. The Rx channels are connected to the column line electrodes 454 through the switch array 470.

The driving signal applied from the driving signal generating unit 432 is supplied to the row line electrodes 452 of the benz double touch screen panel TSP4 to supply charges to the mutual capacitance sensors Cm. Charges from the mutual capacitance sensors Cm are received through the column line electrodes 454 in synchronization with the driving signal. When the conductor including the user's finger or the like is touched to the V-double touch screen panel TSP4, at least a part of the electric field is blocked by the conductor and the amount of charge of the mutual capacitance sensor Cm is reduced. Therefore, in the touch sensing period ST1, the touch input can be sensed based on the amount of change in charge before and after the touch input. The mutual capacitance sensing circuit 460 may determine whether or not the touch input is performed through a change in mutual capacitance formed between the line electrode 452 and the column line electrode 454 during the touch sensing period ST1.

In the bending sensing period ST2, whether or not the ben double display is bent can be detected through the bending capacity sensors Cb of the ben double touch screen panel TSP4. 18, when the Ben double display is bent, the first low line electrode 452_1 is connected to at least one of the second through fifth line electrodes 452_2, 452_3, 452_4, and 452_5, Can be positioned adjacent.

First, the line electrode 452_1 is used as the Tx channels of the inter-capacitance sensing circuit 460 to which the driving signal is applied. The Tx channels are connected to the first line electrode 452_1 through the switch array 470. The second to fifth line electrodes 452_2, 452_3, 452_4 and 452_5 are used as the Rx channels of the inter-capacitive sensing circuit 460 in which the charge of the bending capacitance sensor Cb is received. The Rx channels are connected to the second to fifth line electrodes 452_2, 452_3, 452_4, and 452_5 through the switch array 470. [ At this time, the switch array 470 may float the column line electrodes 454 or connect the column line electrodes 454 to the ground voltage source Vss.

In the bending sensing period ST2, the driving signal applied from the driving signal generating unit 432 is supplied to the first low-line electrode 452_1 of the benz-double touch screen panel TSP4 to be supplied to the corresponding bending capacitance sensor Cb Charge is supplied. The charges from the bending capacitance sensors Cb are received through the second to fifth line electrodes 452_2, 452_3, 452_4, and 452_5 in synchronization with the driving signal. The mutual capacitance sensing circuit 460 can determine whether to bend through the electrostatic capacitance formed between the line electrodes 452 during the bending sensing period ST2.

The mutual capacitance sensing circuit 460 may be configured to sense a change in capacitance caused between the first row line electrode 452_1 and at least one of the second to fifth line electrodes 452_2, 452_3, 452_4, and 452_5 It is possible to sense whether or not the bending is performed. At the same time, the mutual capacitive sensing circuit 460 can identify which line electrode the electrode of which the capacitance change occurs in relation to the first low line electrode 452_1, and can sense the bending position based on this have.

In the description of the fourth embodiment, the case where the driving signal is applied only to the first line electrode 452_1 is described, but the present invention is not limited thereto. The row line electrode to which the driving signal is applied may be any one row line electrode disposed at one end of the row screen electrode among the row line electrodes and includes at least one row line electrode adjacent thereto in sequence .

It is also assumed that all the row electrodes are used as the Tx channel or the Rx channel, but the present invention is not limited thereto. For example, a row line electrode that is used as a GND channel or floated may be disposed between row line electrodes used as a Tx channel and row line electrodes used as an Rx channel.

It is preferable that the row electrodes used for the Tx channel to which the driving signal is applied are smaller than the number of the row electrodes used for the Rx channel. Further, in order to widen the range in which the bending position can be sensed, it is preferable to configure as few as possible the number of row line electrodes used in the Tx channel.

Referring to FIG. 19, the relationship between the number of row lines used in the Tx channel and the sensing range of the bending position will be described. 19A shows an example in which the first and second low line electrodes 452_1 and 452_2 are used as a Tx channel. FIG. 19B shows an example in which only the first low line electrode 452_1 is connected to the Tx channel As shown in FIG. The remaining line electrodes, which are not used for the Tx channel, are used as the Rx channel. At this time, it is assumed that one end of the Ben double display is bent at the same bending position as shown in the figure.

In the case of FIG. 19 (a), the Ben double display is bent so that the first row line electrode 452_1 and the second row line electrode 452_2, to which a driving signal is applied, are in contact with each other. In this case, since both the first line electrode 452_1 and the second low line electrode 452_2 are connected to the driving signal generating unit 432, the first low line electrode 452_1 and the second low line electrode 452_2 Can not be sensed. 19B, the first row line electrode 452_1 to which the drive signal is applied and the second row line electrode 452_2 to receive charge from the bending capacitance sensor are brought into contact with each other, Bending and bending position sensing is possible.

<Fifth Embodiment>

A Ben double display according to a fifth embodiment of the present invention will be described with reference to FIGS. 20 to 28. FIG. 20 to 28 are views for explaining a configuration and a driving method of a Ben Double display according to a fifth embodiment of the present invention.

Referring to FIG. 20, a Ben Double display according to a fifth embodiment of the present invention includes a Ben Double touch screen panel (TSP 5), a capacitance sensing circuit 560, and a switch array 570.

The Ben double touch screen panel TSP5 includes the capacitance sensors Cs. The capacitance sensor Cs includes a capacitance formed in the segment electrodes T11 to T31, T12 to T32, and T13 to T33. The segment electrodes T11 to T31, T12 to T32, and T13 to T33 are divided into a first direction (e.g., the X-axis direction) and a second direction (e.g. In FIG. 20, the segment electrodes are arranged in the form of a 3 × 3 matrix. However, the present invention is not limited thereto.

The capacitance sensing circuit 560 includes a driving signal generating unit 532, a sensing unit 534, an algorithm executing unit 540, and a timing generating unit 536. Each of the channels of the capacitance sensing circuit 560 is connected to the segment electrodes T11 to T31, T12 to T32, T13 to T33 through the switch array 570. [ A charge pump may be incorporated in the sensing unit 534, and in this case, the driving signal generating unit 532 may be omitted.

The Ben double display according to the fifth exemplary embodiment of the present invention may be time-division driven during the touch sensing period ST1 and the bending sensing period ST2 for each frame period. The touch sensing period ST1 is a period during which a touch input of the user is sensed and an application or the like of the display can be operated in conjunction with the sensed touch input. The bending sensing period ST2 is a period during which the bendable display is sensed. The bending sensing period ST2 is preferably shorter than the touch sensing period ST1. In the Ben double display according to the fifth embodiment of the present invention, the bending sensing period (ST2) can be reduced for each frame to relatively secure the touch sensing period (ST1), thereby preventing the touch report rate from decreasing . The fifth embodiment of the present invention can provide a Ben double display in which a decrease in touch sensitivity due to time division driving is prevented for each frame period.

The segment electrodes T11 to T31, T12 to T32, and T13 to T33 are divided into the touch sensing period ST1 and the bending sensing period ST2 to drive the respective segment electrodes T11 to T31, T12 to T32, T33) should operate as drive signal channel, GND channel, and floating line. The driving signal channel supplies driving signals for supplying electric charges to the segment electrodes during the touch sensing period.

In the touch sensing period ST1, the segment electrodes T11 to T31, T12 to T32, and T13 to T33 are used as drive signal channels of the capacitance sensing circuit 560 to which a drive signal is applied. The driving signal channels are connected to the respective segment electrodes T11 to T31, T12 to T32, and T13 to T33 through the switch array 570. [

In the touch sensing period ST1, the capacitance sensing circuit 560 supplies charges to the segment electrodes T11 to T31, T12 to T32, and T13 to T33, respectively, and senses the touch input based on the charge variation of the capacitance . When the conductor approaches the magnetic capacitance, the capacitance due to the conductor is connected in parallel to the capacitance of the magnetic capacitance sensor Cs, and the capacitance value increases. Accordingly, in the touch sensing period ST1, the touch input can be sensed based on the change in the capacitance value before and after the touch input. The capacitance sensing circuit 560 can determine whether or not the touch input is performed through the change in capacitance formed in each of the segment electrodes T11 to T31, T12 to T32, and T13 to T33 during the touch sensing period ST1.

In the bending sensing period ST2, whether or not the ben double display is bent can be detected through the bending capacity sensor Cb of the ben double touch screen panel TSP5. 28, for example, assuming a first bending center area (area extending in the first direction) (BCA_1), the Ben double display displays the second bending center area BCA_1 Direction. &Lt; / RTI &gt; The first, second, and third segment electrodes T11, T12, and T13 located above the first bending central region BCA_1 are located at the bottom of the first bending central region BCA_1. Eighth, and ninth segment electrodes T31, T32, and T33.

Assuming a second bending center area (area extending in the second direction) BCA_2, the Ben double display may be bent along the first direction with respect to the second bending center area BCA_2. The first, fourth, and seventh segment electrodes T11, T21, and T31 located above the second bending central region BCA_2 are disposed at the bottom of the second bending central region BCA_2. Sixth, and ninth-segment electrodes T13, T23, and T33.

Assuming a third bending center area (an area extending in an oblique direction (for example, a T axis direction)) (BCA_3), the Ben double display has a direction orthogonal to the oblique direction with respect to the third bending center area BCA_3 Can be bent along. The first, second, and fourth segment electrodes T11, T12, and T21 located above the third bending center area BCA_3 are located at the bottom of the third bending center area BCA_3. Eighth, and ninth segment electrodes T23, T32, and T33.

The bending sensing period ST2 includes at least one of a first bending sensing period ST2_1, a second bending sensing period ST2_2, and a third bending sensing period ST2_3. The first bending sensing period ST2_1 is a period for sensing whether the first bending center area BCA_1 is bent or not. The second bending sensing period ST2_2 is a period for sensing whether or not the second bending display area BCA_2 is bent based on the second bending display area BCA_2. The third bending sensing period ST2_3 is a period for sensing whether the third bending display area BCA_3 is the third bending display area.

In the first bending sensing period ST2_1, the first, second, and third segment electrodes T11, T12, and T13 are used as driving signal channels of the capacitance sensing circuit 560, respectively. The driving signal channels are connected to the first, second and third segment electrodes T11, T12 and T13 through the switch array 570. [ The seventh, eighth, and ninth segment electrodes T31, T32, and T33 are used as the GND channels of the capacitance sensing circuit 560. GND channels are connected to the seventh, eighth, and ninth segment electrodes T31, T32, T33 through the switch array 570. [ At this time, the switch array 570 floats the fourth, fifth, and sixth segment electrodes T21, T22, and T23.

In the first bending sensing period ST2_1, the capacitance sensing circuit 560 supplies electric charges to the bending capacitance sensors Cb formed in the first, second, and third segment electrodes T11, T12, and T13, Sensing the amount of change. The capacitance sensing circuit 560 senses whether or not the first bending is performed based on the sensed charge variation. The third segment electrode T13 and the seventh segment electrode T31 are provided between the first segment electrode T11 and the seventh segment electrode T31, between the second segment electrode T12 and the eighth segment electrode T32, The capacitive sensing circuit 560 can sense whether the first bending is performed based on the change in capacitance. That is, when the seventh, eighth, and ninth segment electrodes T31, T32, and T33 to which the ground voltage is applied are disposed adjacent to the first, second, and third segment electrodes T11, T12, and T13, The capacitance due to the seventh, eighth, and ninth segment electrodes T31, T32, and T33 is connected in parallel to the bending capacitance sensor Cb to change the capacitance value, and whether bending can be sensed based on the change in the capacitance value have.

In the second bending sensing period ST2_2, the first, fourth, and seventh segment electrodes T11, T21, and T31 are used as driving signal channels of the capacitance sensing circuit 560, respectively. The driving signal channels are connected to the first, fourth and seventh segment electrodes T11, T21 and T31 through the switch array 570. [ The third, sixth, and ninth-segment electrodes T13, T23, and T33 are used as the GND channels of the capacitance sensing circuit 560. The GND channels are connected to the third, sixth, and ninth segment electrodes T13, T23, and T33 through the switch array 570. At this time, the switch array 570 floats the second, fifth, and eighth segment electrodes T12, T22, and T32.

In the second bending sensing period ST2_2, the capacitance sensing circuit 560 supplies electric charges to the bending capacitance sensors Cb formed in the first, fourth, and seventh segment electrodes T11, T21, and T31, Sensing the amount of change. The capacitance sensing circuit 560 detects the second bending based on the sensed charge variation. It is preferable that the first segment electrode T11 and the third segment electrode T13 are formed between the fourth segment electrode T21 and the sixth segment electrode T23 and the seventh segment electrode T31 and the seventh segment electrode T31 are formed between the first segment electrode T11 and the third segment electrode T13, The capacitive sensing circuit 560 senses whether or not the second bending is performed based on this. That is, when the third, sixth and ninth segment electrodes T13, T23 and T33 to which the ground voltage is applied are arranged adjacent to the first, fourth and seventh segment electrodes T11, T21 and T31, The capacitance due to the third, sixth and ninth segment electrodes T13, T23 and T33 is connected in parallel to the bending capacitance sensor Cb to change the capacitance value of the bending capacitance sensor Cb, The presence or absence of bending can be sensed.

In the third bending sensing period ST2_3, the first, second, and fourth segment electrodes T11, T12, and T21 are used as driving signal channels of the capacitance sensing circuit 560, respectively. The driving signal channels are connected to the first, second, and fourth segment electrodes T11, T12, and T21 through the switch array 570. [ The sixth, eighth and ninth segment electrodes T23, T32 and T33 are used as the GND channels of the capacitance sensing circuit 560. The GND channels are connected to the sixth, eighth, and ninth segment electrodes T23, T32, T33 through the switch array 570. [ At this time, the switch array 570 floats the third, fifth, and seventh segment electrodes T13, T22, and T33.

In the third bending sensing period ST2_3, the capacitance sensing circuit 560 supplies electric charges to the bending capacitance sensors Cb formed in the first, second and fourth segment electrodes T11, T12 and T21, Sensing the amount of change. The capacitance sensing circuit 560 detects whether or not the third bending is performed based on the sensed charge variation. The second segment electrode T12 and the sixth segment electrode T23 are formed between the first segment electrode T11 and the ninth segment electrode T33 and the fourth segment electrode T21 and the eighth segment electrode T21 are formed between the second segment electrode T12 and the sixth segment electrode T23, The capacitive sensing circuit 560 can sense whether the third bending is performed based on this change. That is, when the sixth, eighth, and ninth segment electrodes T23, T32, and T33 to which the ground voltage is applied are disposed adjacent to the first, second, and fourth segment electrodes T11, T12, and T21, The capacitance due to the sixth, eighth, and ninth segment electrodes T23, T32, and T33 is connected in parallel to the bending capacitance sensor Cb to change the capacitance value, and whether bending can be sensed based on the change in the capacitance value have.

The capacitance sensing circuit 560 can determine whether the bending sensing circuit 560 is bent by changing the capacitance of the bending capacitance sensor Cb formed in a part of the segment electrodes T11 to T31, T12 to T32, and T13 to T33 during the bending sensing period .

21 to 27, a method of driving a Ben Double display according to a fifth embodiment of the present invention will be described.

The Ben double display according to the fifth embodiment of the present invention includes a touch sensing period ST1 and a touch sensing period ST2 for sensing a case of bending along one of the first direction, the second direction, and the direction orthogonal to the oblique direction. Divisionally driven in the bending sensing period ST2.

During the touch sensing period ST1, a driving signal may be applied to each of the segment electrodes simultaneously or sequentially. Also, by using a multiplexer, the driving signal can be sequentially applied to a plurality of group units including n (n is an integer of 1 or more) electrodes. At this time, driving signals are simultaneously applied to n electrodes included in one group. 21 to 27 illustrate a driving method in which driving signals are sequentially applied in units of three groups including three electrodes during a touch sensing period ST1.

FIG. 21 shows an example of a driving method capable of sensing only when the Ben double display is bent along the second direction with respect to the first bending center area BCA_1. The Ben double display can be time-division driven in the touch sensing period ST1 and the first bending sensing period ST2_1 for each frame period.

22 shows an example of a driving method capable of sensing only when the Ben double display is bent along the first direction with respect to the second bending center area BCA_2. The Ben double display can be time-division driven in the touch sensing period ST1 and the second bending sensing period ST2_2 for each frame period.

23 shows an example of a driving method capable of sensing only the case where the Ben double display is bent along the direction orthogonal to the oblique direction with reference to the third bending center area BCA_3. The Ben double display can be time-division driven in the touch sensing period ST1 and the third bending sensing period ST2_3 for each frame period.

The Ben double display according to the fifth embodiment of the present invention includes a touch sensing period ST1 and a touch sensing period ST2 for sensing a case of bending along at least two directions among the first direction, the second direction, and the direction orthogonal to the oblique direction. Divisionally driven in the bending sensing period ST2.

For example, FIGS. 24 and 25 show a driving method for sensing the bendable display in the case where the bendable display is capable of bending along the first direction and the second direction.

Referring to FIG. 24, the Ben double display may be time-division driven in the touch sensing period ST1 and the first and second bending sensing periods ST2_1 and ST2_2 for each frame period. Referring to FIG. 25, a Ben Double display may be alternately driven in units of two frames including a first frame and a second frame. The first frame is time-division driven in the touch sensing period ST1 and the first bending sensing period ST2_1. The second frame is time-division driven in the touch sensing period ST1 and the second bending sensing period ST2_2. The driving method shown in Fig. 25 can sufficiently secure the touch sensing period (ST1) for each frame period as compared with the driving method shown in Fig. 24, and can more effectively prevent a decrease in touch sensitivity due to time division driving.

As another example, Figs. 26 and 27 illustrate a driving method for sensing a bendable display capable of bending along a direction orthogonal to the first direction, the second direction, and the oblique direction.

Referring to FIG. 26, the Ben double display may be time-division driven by the touch sensing period ST1 and the first, second and third bending sensing periods ST2_1, ST2_2 and ST2_3 for each frame period. Referring to FIG. 27, a Ben Double display may be alternately driven in units of three frames including a first frame, a second frame, and a third frame. The first frame is time-division driven in the touch sensing period ST1 and the first bending sensing period ST2_1. The second frame is time-division driven by the touch sensing period ST1 and the second bending sensing period ST2_2. The third frame is time-division driven in the touch sensing period ST1 and the third bending sensing period ST2_3. The driving method shown in Fig. 27 can sufficiently secure the touch sensing period (ST1) for each frame period as compared with the driving method shown in Fig. 26, and can more effectively prevent a decrease in touch sensitivity due to time division driving.

In describing the fifth embodiment, the bending center area BCA is defined as one line as the first bending center area BCA_1, the second bending center area BCA_2, and the third bending center area BCA_3. However, the present invention is not limited to this, and may be defined as a plurality of lines in the first direction, the second direction, or the diagonal direction. Also, the bending center area BCA may be defined between adjacent lines in the first direction, the second direction, or the oblique direction. In the bending sensing period ST2, on the basis of the defined bending center area BCA, the row segment electrodes provided on either the upper or lower side of the bending center area BCA are respectively driven as drive signal channels, Each of the segment electrodes is driven by a GND channel to sense the bending state.

Although not shown, the Ben Double display according to the fifth embodiment of the present invention includes a plurality of row line electrodes connected to the capacitance sensing circuit 560 through the switch array 570, Line electrodes. A capacitive sensor provided on a Ben Double touch screen panel includes a capacitance formed in each of the row line electrodes and the column line electrodes.

In the touch sensing period ST1, the capacitance sensing circuit 560 supplies charge to each of the row electrodes and the column line electrodes, and senses the touch input based on the charge variation of the capacitance. When the conductor approaches the magnetic capacitance sensor, the capacitance due to the conductor is connected in parallel to the capacitance of the magnetic capacitance sensor, thereby increasing the capacitance value. Accordingly, in the touch sensing period ST1, the touch input is sensed based on the change in the capacitance value before and after the touch input.

In the bending sensing period ST2, the ben double display can sense whether or not the bending is performed through the capacitance sensing circuit. The bending includes a first bending bending along the column direction with respect to the row direction and / or a second bending bending along the row direction with respect to the column direction. The bending sensing period ST2 may include a first bending sensing period and / or a second bending sensing period to sense the first bending and / or the second bending.

During the first bending sensing period, the sensor driving circuit applies a driving signal to at least one of the row electrodes and senses a second capacitance change. At this time, the switch array floats the column line electrodes and connects the base voltage source to one or more of the row line electrodes. When a line electrode to which a ground voltage is applied is bent and a beneath touch screen panel is bent and the line electrode is disposed adjacent to a line electrode to which a driving signal is applied, a capacitance due to a line electrode to which a ground voltage is applied to the bending capacitance sensor is connected in parallel The capacity value of the bending capacity sensor changes, and whether or not the first bending is sensed based on the change of the capacity value.

During the second bending sensing period, the sensor driving circuit applies a driving signal to at least one of the column line electrodes and senses a second capacitance change. At this time, the switch array floats the line electrodes and connects the base voltage source to one or more of the column line electrodes. When a column line electrode to which a ground voltage is applied is bent and a beneath touch screen panel is bent and disposed adjacent to a column line electrode to which a driving signal is applied, capacitance due to the column line electrodes to which a ground voltage is applied to the bending capacitance sensor is parallel The capacity value of the bending capacity sensor is changed, and whether or not the second bending is sensed based on the change of the capacity value.

As described above, the Ben double display according to the fifth embodiment of the present invention may include a Ben double touch screen panel including various types of electrodes. As another example, the touch electrodes may be arranged in a stripe shape extending in either one of the row direction and the column direction.

<Sixth Embodiment>

The fifth embodiment of the present invention discloses a structure and a driving method for detecting a bending center area defined as a bending center area when the bending center area is defined and bending based on a defined bending center area. Alternatively, a sixth embodiment of the present invention discloses a structure capable of detecting whether or not a bending center region is not previously specified, and a driving method thereof. Accordingly, the sixth embodiment of the present invention can provide a ben double display capable of bending position sensing as well as bending sensing.

29 to 31, a Ben double display according to a sixth embodiment of the present invention will be described. 29 to 31 are diagrams for explaining a configuration and a driving method of a Ben Double display according to a sixth embodiment of the present invention.

29, the Ben double display according to the sixth embodiment of the present invention includes a Ben Double touch screen panel TSP 6, a capacitance sensing circuit 660, and a switch array 670.

The Ben double touch screen panel TSP6 includes the capacitance sensors Cs. The capacitance sensor Cs includes a capacitance formed in the segment electrodes T11 to T31, T12 to T32, and T13 to T33. The segment electrodes T11 to T31, T12 to T32, and T13 to T33 are divided into a first direction (e.g., the X-axis direction) and a second direction (e.g. In FIG. 29, the segment electrodes are arranged in the form of a 3 × 3 matrix. However, the present invention is not limited thereto. In addition, the segment electrodes may extend in one direction and be arranged in a stripe shape.

The capacitance sensing circuit 660 includes a driving signal generating unit 632, a sensing unit 634, an algorithm executing unit 640, and a timing generating unit 636. Each of the channels of the capacitance sensing circuit 660 is connected to the segment electrodes T11 to T31, T12 to T32, T13 to T33 through the switch array 670. [ A charge pump may be incorporated in the sensing unit 634, and in this case, the driving signal generating unit 632 may be omitted.

Referring to FIG. 30, the Ben double display according to the sixth exemplary embodiment of the present invention may be time-division driven in a touch sensing period ST1 and a bending sensing period ST2 in each frame period. The touch sensing period ST1 is a period during which a touch input of the user is sensed and an application or the like of the display can be operated in conjunction with the sensed touch input. The bending sensing period ST2 is a period during which the bendable display is sensed. The touch sensing period ST1 is preferably longer than the bending sensing period ST2. In the Ben double display according to the sixth embodiment of the present invention, the touch sensing period (ST1) is sufficiently ensured, and the decrease in touch sensitivity due to the time division driving for each frame period can be prevented.

The segment electrodes T11 to T31, T12 to T32, and T13 to T33 are divided into the touch sensing period ST1 and the bending sensing period ST2 to drive the respective segment electrodes T11 to T31, T12 to T32, T33) should operate as drive signal channel, GND channel, and floating line. The driving signal channel supplies driving signals for supplying electric charges to the segment electrodes T11 to T31, T12 to T32, and T13 to T33 during the touch sensing period.

In the touch sensing period ST1, the segment electrodes T11 to T31, T12 to T32, and T13 to T33 are used as driving signal channels of the capacitance sensing circuit 660 to which a driving signal is applied, respectively. The driving signal channels are connected to the respective segment electrodes T11 to T31, T12 to T32, and T13 to T33 through the switch array 670.

In the touch sensing period ST1, the capacitance sensing circuit 660 supplies electric charge to each of the segment electrodes T11 to T31, T12 to T32, and T13 to T33, and senses the touch input based on the charge variation of the capacitance . When the conductor approaches the magnetic capacitance, the capacitance due to the conductor is connected in parallel to the capacitance of the magnetic capacitance sensor Cs, and the capacitance value increases. Accordingly, in the touch sensing period ST1, the touch input can be sensed based on the change in the capacitance value before and after the touch input. The capacitance sensing circuit 660 can determine whether or not the touch input is performed through the change in capacitance formed in each of the segment electrodes T11 to T31, T12 to T32, and T13 to T33 during the touch sensing period ST1.

In the bending sensing period ST2, whether or not the ben double display is bent can be detected through the bending capacity sensor Cb of the ben double touch screen panel TSP6. For example, referring to FIG. 31, when the Ben double display is bent, the first segment electrode T11 is connected to the second through ninth segment electrodes T12, T13, T21, T22, T23, T31, ) Adjacent to each other.

In the bending sensing period ST2, the first segment electrode T11 is used as a drive signal channel of the capacitance sensing circuit 660. [ The driving signal channel is connected to the first segment electrode T11 through the switch array 670. [ The second to ninth-segment electrodes T12, T13, T21, T22, T23, T31, T32 and T33 are used as the GND channels of the capacitance sensing circuit 660. The GND channels are connected to the second to ninth segment electrodes T12, T13, T21, T22, T23, T31, T32, and T33 through the switch array 670.

In the bending sensing period ST2, the capacitance sensing circuit 660 supplies electric charge to the bending capacitance sensor Cb formed in the first segment electrode T11 and senses the charge variation. The capacitance sensing circuit 660 senses the presence or absence of bending based on the sensed charge variation. A change in capacitance occurs between the first segment electrode T11 and at least one of the second to ninth segment electrodes T12, T13, T21, T22, T23, T31, T32, and T33 at the time of bending , And the capacitance sensing circuit 660 can sense the bending based on this. That is, when at least one of the second to ninth-segment electrodes T12, T13, T21, T22, T23, T31, T32, and T33 to which the ground voltage is applied is disposed adjacent to the first segment electrode T11 The capacitance due to at least one of the second to ninth segment electrodes T12, T13, T21, T22, T23, T31, T32 and T33 is connected in parallel to the bending capacitance sensor Cb, The capacity value changes, and whether or not to bend can be sensed based on the change of the capacity value.

The capacitance sensing circuit 660 is connected between the first segment electrode T11 and at least one of the second to ninth segment electrodes T12, T13, T21, T22, T23, T31, T32, It is possible to sense the bending position based on the change in capacity that occurs. The capacitance sensing circuit 660 can identify which segment electrode the electrode of which capacity change occurs in relation to the first segment electrode T11, and can sense the bending position based on this.

In the description of the sixth embodiment of the present invention, only the case where the first segment electrode T11 is used as the drive signal channel of the capacitance sensing circuit 660 has been described as an example, but the present invention is not limited thereto. The electrode used as the driving signal channel of the capacitance sensing circuit 660 may be any one of the segment electrodes disposed at one end of the touch screen panel among the segment electrodes and may include at least one segment electrode adjacent thereto Lt; / RTI &gt;

<Seventh Embodiment>

In the Ben double display according to the seventh embodiment of the present invention, various events can be performed by sensing the bending position. 32 and 33, a Ben double display according to a seventh embodiment of the present invention will be described. 32 and 33 are views for explaining the operating state of the Ben Double display according to the seventh embodiment of the present invention.

Referring to FIG. 32, when one end of the Ben Double display is bent, the display area AA is divided into a first display area NRA that is not exposed to the outside and a second display area RA that is exposed to the outside do. The Ben Double display can sense the bending position through the sensor driving circuit, and inactivates the first display area NRA which is not exposed to the outside based on the sensed bending position and the second display area RA) can be activated.

The present invention can provide a ben double display in which an unnecessary increase in power consumption is prevented by deactivating the first display area NRA which is not exposed to the outside. In addition, the present invention can provide a user-friendly Ben double display by allowing the user to adjust the size of the display area AA in accordance with his / her preference.

As another example, referring to FIG. 33, the Ben Double display may further include a back display area provided on the back surface of the Ben Double display. The backside display area is an area where a visual image or the like that can be visually recognized by the user is implemented. The backside display area can be driven at the same time or at the same time as the display area AA formed on the front face of the Ben Double display.

When one end of the Ben Double display is bent, the display area AA is divided into a first display area NRA that is not exposed to the outside and a second display area RA that is exposed to the outside. At this time, a part BA of the rear display area is recognized by the user located in front of the Ben double display together with the second display area RA exposed to the outside. The Ben double display can sense the bending position through the sensor driving circuit and deactivates the first display area NRA based on the sensed bending position and controls the second display area RA, A part (BA) of the display area can be activated.

Referring to FIG. 33 (a), the activated second display area RA and a part of the back display area BA can implement one content at the same time. In addition, although not shown in the drawing, the Ben double display according to the seventh embodiment of the present invention can implement different contents in the activated second display area RA and the activated back display area BA, Thus, a multi-display can be realized.

Referring to FIG. 33 (b), the activated second display area RA and a part BA of the activated rear display area can perform different functions. For example, the activated second display area RA may be a touch input part TW, and a part BA of the activated rear display area may be a touch input information display part MW interlocked with the touch input part TW. If there is a touch input by the user, the sensor driving circuit can determine whether the touch input is a character using the character recognition algorithm implemented in advance, and display the determined character on the touch input information display portion MW.

The Ben double display according to the seventh embodiment of the present invention can sense the bending position through the sensor driving circuit and can perform various events based on the sensed bending position. Accordingly, the seventh embodiment of the present invention can provide a Ben double display capable of improving the usability of the user and a Ben double display capable of realizing various contents.

&Lt; Eighth Embodiment >

Hereinafter, a Ben double display according to an eighth embodiment of the present invention will be described with reference to FIG. FIG. 34 is a view for explaining the operating state of the Ben Double display according to the eighth embodiment of the present invention. FIG.

Referring to FIG. 34, the bendable display according to the eighth exemplary embodiment of the present invention can determine a bend angle through a change in the bending capacity sensor Cb sensed during bending, and can perform various events based on the bend angle. .

Figures 34 (a), (b), and (c) are views showing a bending process of the Ben double display in a time-wise manner. 34 (a), when the angle formed by the upper surface UP and the lower surface BP of the benz double touch screen panel TSP8 on one plane is 180 degrees, the upper surface UP and the lower surface (BP) are not disposed adjacent to each other, so that no electrostatic capacitance is generated between the electrodes.

Referring to Figure 34 (b), when the benz-double display is bent so that the upper surface UP and the lower surface BP have a certain angle alpha, A capacitance C is generated between any one electrode (hereinafter referred to as a 'first electrode') and any electrode (hereinafter referred to as a 'second electrode') provided on the corresponding lower surface BP. Reference symbol C denotes a capacitance value generated first between the first electrode and the second electrode when Ben double display bending.

Referring to Figure 34 (c), the Ben double display may be further bent as compared to that shown in Figure 34 (b). As the distance between the first electrode and the second electrode decreases, the electrostatic capacitance value C 'formed between the first electrode and the second electrode increases. The capacitance value is inversely proportional to the distance between the first electrode and the second electrode. Since the distance between the first electrode and the second electrode decreases as the angle formed by the upper surface UP and the lower surface BP becomes smaller, the capacitance value C 'formed between the first electrode and the second electrode decreases, Increases. Reference numeral C 'denotes a changed electrostatic capacitance value between the first electrode and the second electrode. The sensor driving circuit can set the C value and the C 'value in advance through the algorithm executing section and determine the bending angle between the upper surface UP and the lower surface BP according to the sensed values of C and C' Algorithm. The set C and C 'values can be predetermined through experiments in consideration of the position of the electrode and the intensity of the applied signal, and the bending angles according to the predetermined C and C' values can be set in advance by matching.

The ben double display according to the eighth embodiment of the present invention can process various events according to the determined bending angle. For example, the control unit of the Ben Double display can gradually decrease the brightness of light emitted through the display area, starting from the case where the electrostatic capacity value between the first electrode and the second electrode is C value. That is, the control unit of the Ben Double display can lower the luminance of the light emitted through the display area in synchronization with the moment when the capacitance has the value C, and can display the C ', The light emitted through the display area can be turned off.

The ben double display according to the eighth embodiment of the present invention can sense the bending angle through the sensor driving circuit and can perform various events based on the sensed bending angle. Accordingly, the eighth embodiment of the present invention can provide a Ben double display capable of improving the usability of a user, and can provide a Ben double display capable of realizing various contents.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

TSP: Ben double touch screen panel 60: Sensor driving circuit
70: switch array 32: drive signal generator
34: sensing unit 36: timing generating unit
40: algorithm executing unit Cm: mutual capacity sensor
Cs: Capacitance sensor Cb: Bending capacity sensor
BCA: bending center area ST1: touch sensing period
ST2: Bending sensing period FL: Floating
GND: Ground voltage

Claims (23)

A Ben double touch screen panel having a plurality of capacitances and channels connected to the capacitances;
A sensor driving circuit for supplying a driving signal to the capacitance through the channels and sensing a change in the capacitance; And
And a switch array connecting the channels to the sensor driving circuit during a touch sensing period and connecting or floating some of the channels to a base voltage source during a bending sensing period,
In the sensor driving circuit,
Sensing the touch input based on the first capacitances during the touch sensing period,
A ben double display for sensing whether the ben double touch screen panel is bent based on one or more second capacitances during the bending sensing period. The method according to claim 1,
The Ben double touch screen panel includes:
A plurality of row line electrodes connected to the channels and column line electrodes crossing the row line electrodes,
Wherein the first capacitance is a capacitance between the row line electrodes and the column line electrodes,
Wherein the second capacitance is at least one of a capacitance between the row line electrodes and a capacitance between the column line electrodes. 3. The method of claim 2,
The switch array includes:
Connecting the column line electrodes to the base voltage source during the bending sensing period,
In the sensor driving circuit,
Wherein a bend sensing period is selected to apply a driving signal to at least one of the row electrodes and to sense a second capacitance through at least one of the row electrodes. 3. The method of claim 2,
The switch array includes:
Connecting the line electrodes to the base voltage source during the bending sensing period,
In the sensor driving circuit,
Wherein the driving signal is applied to at least one of the column line electrodes during the bending sensing period and the second capacitance is sensed through at least one of the column electrodes. 3. The method of claim 2,
Wherein the bending sensing period includes:
A first bending sensing period and a second bending sensing period,
The switch array includes:
Connecting or floating the column line electrodes to the base voltage source during the first bending sensing period and connecting or floating the line electrode to the base voltage source during the second bending sensing period,
In the sensor driving circuit,
Applying a driving signal to at least one of the row electrodes during a first bending sensing period, sensing a second capacitance through at least one of the row electrodes,
Wherein a driving signal is applied to at least one of the column line electrodes during a second bending sensing period and a second capacitance is sensed through at least another of the column line electrodes. 6. The method according to any one of claims 3 to 5,
Wherein the Ben double display panel includes a bending center area,
The switch array includes:
Wherein the row line electrodes and the column line electrodes provided in the bending center region during the bending sensing period are connected to the base voltage source or floated. The method according to claim 1,
The Ben double touch screen panel includes:
A plurality of segment electrodes connected to the channels,
Wherein the first and second capacitances are capacitances connected to the segment electrodes. 8. The method of claim 7,
In the sensor driving circuit,
A drive signal is applied to at least one of the segment electrodes during the bending sensing period to sense the second capacitance change,
The switch array includes:
Wherein the base voltage source is connected to at least one of the segment electrodes during the bending sensing period. 9. The method of claim 8,
Wherein the Ben double display panel includes a bending center area,
The switch array includes:
Wherein the segment electrodes provided on the bending center region are floated during the bending sensing period. The method according to claim 1,
The Ben double touch screen panel includes:
A plurality of row line electrodes connected to the channels and column line electrodes crossing the row line electrodes,
Wherein the first and second capacitances are capacitances connected to the row electrodes and the column line electrodes. 11. The method of claim 10,
In the sensor driving circuit,
And applying a driving signal to at least one of the row electrodes during the bending sensing period to sense the second capacitance change,
The switch array includes:
Wherein the column line electrodes are floating during the bending sensing period and the base voltage source is connected to another one of the row line electrodes. 11. The method of claim 10,
In the sensor driving circuit,
A driving signal is applied to at least one of the column line electrodes during the bending sensing period to sense the second capacitance change,
The switch array includes:
A plurality of column line electrodes connected to the plurality of column line electrodes, and a plurality of column line electrodes connected to the plurality of column line electrodes; The method according to claim 1,
The sensor driving circuit includes:
A bens double display for sensing a bending position based on the second capacitance during the bending sensing period. 14. The method of claim 13,
And a display panel provided with a display area,
Wherein the display region is formed on the basis of the sensed bending position,
A first display area which is not exposed to the outside, and a second display area which is exposed to the outside. 15. The method of claim 14,
Wherein the first display area is inactivated. 15. The method of claim 14,
Further comprising a back display area provided on a back surface of the display panel,
And the backside display area is formed on the basis of the sensed bending position,
A first rear display area which is not recognized by the front face of the display panel and a second rear display area which is recognized by the front face. 17. The method of claim 16,
The second display region recognized on the front face of the display panel and the second rear face display region,
A Ben Double display that implements one content at a time, or each separate content. The method according to claim 1,
The sensor driving circuit includes:
A bens double display for sensing a bending angle based on the second capacitance during the bending sensing period. A Ben Double touch screen panel having a plurality of capacitances and channels connected to the capacitances, a sensor driving circuit for supplying a driving signal to the capacitance through the channels and sensing a change in the capacitance; And a switch array connecting the channels to the sensor driving circuit during a touch sensing period and connecting or floating some of the channels to a ground voltage source during a bending sensing period,
Sensing a touch input based on first capacitances during the touch sensing period through the sensor driving circuit; And
And a second step of sensing, via the sensor driving circuit, at least one of bending, bending position, and bending angle of the ben double touch screen panel based on one or more second capacitances during the bending sensing period, How to drive a double display. 20. The method of claim 19,
The touch screen panel includes:
Division driving in the touch sensing period and the bending sensing period for each frame period through the Ben-double sensor driving circuit. 21. The method of claim 20,
Wherein the bending sensing period is shorter than the touch sensing period. 20. The method of claim 19,
Wherein the bending sensing period includes:
A first bending sensing period and a second bending sensing period,
The touch screen panel includes:
Divisionally driven by the sensor driving circuit in the touch sensing period, the first bending sensing period, and the second bending sensing period for each frame period. 20. The method of claim 19,
Wherein the bending sensing period includes:
A first bending sensing period and a second bending sensing period,
The touch screen panel includes:
And a second bending sensing period in which a first frame is time-divided by the touch sensing period and the first bending sensing period, and a second frame periodically divided by the touch sensing period and the second bending sensing period, A method of driving a Ben Double display driven alternately.

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