Display device

Abstract

A display device includes a display panel that displays an image, a touch sensor that senses a touch, a display controller that drives the display panel, and a touch controller that drives the touch sensor. The display controller transmits a timing signal that indicates timing of a display operation to the touch controller and modulates the timing signal in a blank interval of a frame interval to thereby provide display driving information to the touch controller. Thus, the display controller can provide the display driving information to the touch controller without a separate dedicated channel.

Description

Technical Field

[0001] This invention relates to display devices, and more particularly to display devices that provide display information to peripheral devices. Background Technology

[0002] The display device may include peripheral devices that provide various functions or be connected to said peripheral devices. For example, the peripheral devices may include touch sensors that sense touch, EMR digitizers that sense electromagnetic resonance (EMR) pens, Wi-Fi devices that perform Wi-Fi communication, Bluetooth devices that perform Bluetooth communication, etc.

[0003] However, the display operation of the display device and the operation of the peripheral devices may affect each other. For example, the driving voltage of the display device may be distorted due to the touch sensing operation of the touch sensing device, or the touch driving voltage of the touch sensing device may be distorted due to the display operation of the display device. Summary of the Invention

[0004] One object of the present invention is to provide a display device that provides display information to peripheral devices.

[0005] However, the problems to be solved by the present invention are not limited to those mentioned above, and various extensions can be made without departing from the scope and ideas of the present invention.

[0006] To achieve an objective of the present invention, the display device according to various embodiments of the present invention includes: a display panel for displaying an image; a touch sensor for sensing a touch; a display controller for driving the display panel; and a touch controller for driving the touch sensor. The display controller transmits a timing signal representing the timing of a display operation to the touch controller, and modulates the timing signal in blank intervals within a frame interval, thereby providing display driving information to the touch controller.

[0007] In one embodiment, the display controller may modulate at least one of the presence or absence of pulses of the timing signal in each horizontal time of the blank interval, the pulse phase of the timing signal in the blank interval, and the pulse width of the timing signal in the blank interval, thereby providing the display driving information to the touch controller.

[0008] In one embodiment, the display driving information may include at least one of the following: frame rate information driving the display panel, scan mode information about the display panel, and driving voltage information about the display panel.

[0009] In one embodiment, the timing signal may include a vertical synchronization signal representing the timing of the frame interval and a horizontal synchronization signal representing the timing of each horizontal time.

[0010] In one embodiment, the display controller may encode the horizontal synchronization signal in the blank interval such that whether the horizontal synchronization signal has a pulse in each horizontal time period in the blank interval matches the bits of the driving information data representing the display driving information, thereby transmitting the driving information data representing the display driving information to the touch controller in the blank interval.

[0011] In one embodiment, the display controller may switch the vertical synchronization signal at the start time of the blank interval in order to notify the touch controller of the start timing of the transmission of the drive information data.

[0012] In one embodiment, the display controller modulates the vertical sync signal such that at the beginning of the blank interval, the vertical sync signal has a first edge to notify the touch controller of the start timing of the transmission of the drive information data, and at the end of the blank interval, the vertical sync signal has a second edge to notify the touch controller of the end timing of the transmission of the drive information data.

[0013] In one embodiment, the display controller encodes the horizontal synchronization signal in the blank interval such that the phase of the pulses of the horizontal synchronization signal from the start time point of the blank interval matches the driving information data representing the display driving information, thereby transmitting the driving information data representing the display driving information to the touch controller in the blank interval.

[0014] In one embodiment, the display controller switches the vertical synchronization signal at the start time point of the blank interval to notify the touch controller of the start timing of the transmission of the drive information data.

[0015] In one embodiment, the display controller modulates the vertical sync signal such that at the start time point of the blank interval, the vertical sync signal has a first edge to notify the touch controller of the start timing of the transmission of the drive information data, and at the end time point of the blank interval, the vertical sync signal has a second edge to notify the touch controller of the end timing of the transmission of the drive information data.

[0016] In one embodiment, the display controller encodes the vertical sync signal in the blank area such that the pulse width of the vertical sync signal in the blank area matches the drive information data representing the display drive information, thereby transmitting the drive information data representing the display drive information to the touch controller in the blank area.

[0017] In one embodiment, the display controller periodically switches the horizontal synchronization signal in the blank interval.

[0018] In one embodiment, the display controller maintains the horizontal sync signal at a constant level in the blank area to notify the touch controller of the timing of the transmission of the drive information data.

[0019] In one embodiment, the display controller encodes the vertical synchronization signal in the blank interval such that the phase of the pulses of the vertical synchronization signal from the start time point of the blank interval matches the driving information data representing the display driving information, thereby transmitting the driving information data representing the display driving information to the touch controller in the blank interval.

[0020] In one embodiment, the display controller periodically switches the horizontal synchronization signal in the blank interval.

[0021] In one embodiment, the display controller maintains the horizontal sync signal at a constant level in the blank area to notify the touch controller of the timing of the transmission of the drive information data.

[0022] In one embodiment, the timing signal includes a data strobe signal representing the timing of valid image data and a horizontal synchronization signal representing the timing of each horizontal time.

[0023] In one embodiment, the display controller modulates at least one of the presence or absence of pulses of the data strobe signal in each horizontal time of the blank interval, the pulse phase of the data strobe signal in the blank interval, and the pulse width of the data strobe signal in the blank interval, thereby providing the display driving information to the touch controller.

[0024] To achieve an objective of the present invention, the various embodiments of the present invention relate to a display device comprising: a display panel for displaying an image; peripheral devices; and a display controller for driving the display panel. The display controller transmits a timing signal representing the timing of a display operation to the peripheral devices, and modulates the timing signal in blank intervals within frame intervals to provide display driving information to the peripheral devices.

[0025] In one embodiment, the peripheral device may include at least one of a touch sensing device for sensing touch, an electromagnetic resonance digitizer for sensing an electromagnetic resonance pen, a Wi-Fi device for performing Wi-Fi communication, and a Bluetooth device for performing Bluetooth communication.

[0026] (Invention effect) In the display devices according to various embodiments of the present invention, the display controller can transmit a timing signal representing the timing of a display operation to a peripheral device (e.g., a touch controller of a touch sensing device), and modulate the timing signal in blank intervals of a frame interval to provide display driving information to the peripheral device. Thus, the display driving information can be provided to the peripheral device without the need for a separate channel, reducing or preventing interference between the display operation of the display device and the operation of the peripheral device.

[0027] However, the effects of the present invention are not limited to those described above, and various extensions can be made without departing from the scope and ideas of the present invention. Attached Figure Description

[0028] Figure 1 This is a block diagram illustrating the display device involved in various embodiments of the present invention.

[0029] Figure 2 This is a diagram showing a portion of the display panel and a portion of the touch sensor.

[0030] Figure 3 This is a timing diagram used to illustrate an example of display operation and touch-sensing operation.

[0031] Figure 4 This is a timing diagram used to illustrate examples of display operations and touch-sensing operations related to frame rate.

[0032] Figure 5 This is a timing diagram used to illustrate examples of display operations and touch sensing operations related to scanning modes.

[0033] Figure 6 This is a sequence diagram illustrating a method for providing display information in a display device according to an embodiment of the present invention.

[0034] Figure 7 It is used to explain in Figure 6 The figure shows an example of encoding the horizontal synchronization signal in the blank interval in the method.

[0035] Figure 8 Is Figure 6 The method represents a timing diagram of an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal, and output image data.

[0036] Figure 9 Is Figure 6 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data gating signals, and output image data.

[0037] Figure 10 This is a sequence diagram illustrating a method for providing display information in a display device according to other embodiments of the present invention.

[0038] Figure 11 It is used to explain in Figure 10 The figure shows an example of encoding the horizontal synchronization signal in the blank interval in the method.

[0039] Figure 12 Is Figure 10 The method represents a timing diagram of an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal and output image data.

[0040] Figure 13 Is Figure 10 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data strobe signals, and output image data.

[0041] Figure 14 This is a sequence diagram illustrating a method for providing display information in a display device according to another embodiment of the present invention.

[0042] Figure 15 It is used to explain in Figure 14 The figure shows an example of encoding the vertical synchronization signal in the blank interval in the method.

[0043] Figure 16 Is Figure 14 The method represents a timing diagram of an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal and output image data.

[0044] Figure 17 Is Figure 14 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data strobe signals, and output image data.

[0045] Figure 18 This is a sequence diagram illustrating a method for providing display information in a display device according to another embodiment of the present invention.

[0046] Figure 19 It is used to explain in Figure 18 The figure shows an example of encoding the vertical synchronization signal in the blank interval in the method.

[0047] Figure 20 Is Figure 18The method represents a timing diagram of an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal and output image data.

[0048] Figure 21 Is Figure 18 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data strobe signals, and output image data.

[0049] Figure 22 This is a block diagram illustrating a display device according to other embodiments of the present invention.

[0050] Figure 23 This is a sequence diagram illustrating a method for providing display information in a display device according to other embodiments of the present invention.

[0051] Figure 24 This is a block diagram illustrating a display device according to another embodiment of the present invention.

[0052] Figure 25 This is a block diagram illustrating an electronic device including a display device according to various embodiments of the present invention.

[0053] (Symbol Explanation) 100, 1100: Display device; 110, 1310: Display panel; 120, 1120, 1330: Display controller; 130: Data driver; 140: Scan driver; 150, 1150: Controller; 160: Touch sensor; 170, 1170: Touch controller; 180, 1180: Internal timing signal generator; 190, 1190: Timing signal encoder; 1350: Peripheral device. Detailed Implementation

[0054] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings, and repeated descriptions of the same constituent elements are omitted.

[0055] Figure 1 This is a block diagram illustrating the display device according to various embodiments of the present invention. Figure 2 This is a diagram showing a portion of the display panel and a portion of the touch sensor. Figure 3 This is a timing diagram used to illustrate an example of display operation and touch-sensing operation. Figure 4 This is a timing diagram used to illustrate examples of display operations and touch-sensing operations related to frame rate. Figure 5 This is a timing diagram used to illustrate examples of display operations and touch sensing operations related to scanning modes.

[0056] Reference Figure 1The display device 100 according to various embodiments of the present invention may include a display panel 110 for displaying images, a display controller 120 for driving the display panel 110, a touch sensor 160 for sensing touch, and a touch controller 170 for driving the touch sensor 160. On the other hand, Figure 1 The illustration shows an example of a display controller 120 providing timing signals (e.g., vertical sync signal VSYNC and horizontal sync signal HSYNC) to a touch sensing device including a touch sensor 160 and a touch controller 170. However, according to various embodiments, the display controller 120 may provide the timing signals to any peripheral device.

[0057] The display panel 110 can be driven by the display controller 120 to display images. The display panel 110 may include a plurality of data lines, a plurality of scan lines, and a plurality of pixels PX connected to the plurality of data lines and the plurality of scan lines. In one embodiment, the display panel 110 may be an OLED display panel in which each pixel PX includes an organic light-emitting diode (OLED).

[0058] For example, such as Figure 2 As shown, each pixel PX may include a switching transistor TSW, a storage capacitor CST, a driving transistor TDR, and an organic light-emitting diode EL. The switching transistor TSW can transmit the data voltage VDAT of the data line DL to the storage capacitor CST in response to the scan signal SS. The storage capacitor CST can store the data voltage VDAT transmitted by the switching transistor TSW. The driving transistor TDR can generate a driving current based on the data voltage VDAT stored in the storage capacitor CST. The organic light-emitting diode EL can emit light based on the driving current flowing from the line of high power supply voltage ELVDD to the line of low power supply voltage ELVSS. On the other hand, Figure 2 An example of a 2T1C structure for each pixel PX is shown, but the pixel PX of the display device 100 involved in the embodiments of the present invention are not limited to... Figure 2 For example, the display panel 110 is not limited to the OLED display panel, but can be any display panel. For example, the display panel 110 can be an LCD (Liquid Crystal Display) panel, an LED (Light Emitting Diode) panel, an FED (Field Emission Display) panel, etc., but is not limited to these.

[0059] The display controller 120 can perform display operations driving the display panel 110 based on input image data IDAT provided from an external main processor (e.g., an application processor (AP), a graphics processing unit (GPU), or a graphics card) and a control signal CTRL. In one embodiment, the input image data IDAT can be RGB image data including red image data, green image data, and blue image data. Furthermore, in one embodiment, the control signal CTRL can include an external vertical synchronization signal EVSYNC, an external horizontal synchronization signal EHSYNC, an external data strobe signal EDE, a master clock signal, etc., but is not limited to these. In one embodiment, such as... Figure 1 As shown, the display controller 120 may include a data driver 130 that provides a data voltage VDAT to a plurality of pixels PX, a scan driver 140 that provides a scan signal SS to a plurality of pixels PX, and a controller 150 that controls the data driver 130 and the scan driver 140.

[0060] Data driver 130 can generate a data voltage VDAT based on the data control signal DCTRL received from controller 150 and the output image data ODAT, and provide the data voltage VDAT to the multiple pixels PX through the plurality of data lines. In one embodiment, the data control signal DCTRL may include a level start signal generated based on an internal data strobe signal IDE, an internal horizontal synchronization signal IHSYNC, and a load signal, but is not limited thereto. In one embodiment, data driver 130 and controller 150 can be implemented using a single integrated circuit, which may be referred to as a timing controller embedded data driver (TED). In other embodiments, data driver 130 and controller 150 may be implemented using separate integrated circuits.

[0061] The scan driver 140 can generate a scan signal SS based on a scan control signal SCTRL received from the controller 150, and sequentially provide the scan signal SS to the plurality of pixels PX in rows through the plurality of scan lines. In one embodiment, the scan control signal SCTRL may include a scan start signal, a scan clock signal, etc., generated based on an internal vertical synchronization signal IVSYNC, but is not limited thereto. In one embodiment, the scan driver 140 may be integrated or formed in the periphery of the display panel 110. In other embodiments, the scan driver 140 may be implemented by one or more integrated circuits.

[0062] The controller (e.g., a timing controller (T-CON)) 150 may receive input image data IDAT and control signal CTRL from the external main processor (e.g., the AP, the GPU, or the graphics card). The controller 150 may generate output image data ODAT, a data control signal DCTRL, and a scan control signal SCTRL based on the input image data IDAT and the control signal CTRL. In one embodiment, the controller 150 may include an internal timing signal generator 180 that generates timing signals representing the timing of the display operation based on the control signal CTRL, and may generate the data control signal DCTRL and the scan control signal SCTRL based on the timing signals generated by the internal timing signal generator 180. For example, the internal timing signal generator 180 may generate internal vertical synchronization signals IVSYNC, internal horizontal synchronization signals IHSYNC, and internal data strobe signals IDE suitable for the display operation as the timing signals based on external vertical synchronization signals EVSYNC, external horizontal synchronization signals EHSYNC, and external data strobe signals EDE received from the external main processor. In addition, the controller 150 can provide output image data ODAT and data control signal DCTRL to the data driver 130 to control the data driver 130, and provide scan control signal SCTRL to the scan driver 140 to control the scan driver 140.

[0063] Touch sensor 160 can be a capacitive touch sensor that senses changes in capacitance caused by the touch of a conductive object (e.g., a finger, stylus, etc.). For example, as Figure 1 As shown, the touch sensor 160 may include a plurality of touch driving lines TXL extending in a first direction and a plurality of touch sensing lines RXL extending in a second direction different from (or the same as) the first direction, but is not limited thereto. Furthermore, as... Figure 1 As shown, each touch driving line TXL may have touch driving electrodes connected to each other, and each touch sensing line RXL may have touch sensing electrodes connected to each other. The touch driving electrodes and the touch sensing electrodes may each have a diamond shape, but are not limited thereto. Furthermore, according to an embodiment, the touch sensor 160 may be an add-on type touch sensor attached to the display panel 110, or the touch sensor 160 may be an embedded type touch sensor formed internally. For example, the touch sensor 160 may be an on-cell type embedded touch sensor or an in-cell type embedded touch sensor, but is not limited thereto.

[0064] Touch controller 170 can perform touch sensing operations to drive touch sensor 160 to detect the touch and / or proximity of a conductive object. For example, touch controller 170 can provide a touch driving voltage VTX to multiple touch driving lines TXL. Based on the touch driving voltage VTX, a touch sensing voltage VRX can be induced on the multiple touch sensing lines RXL through capacitive coupling or mutual capacitance between the multiple touch driving lines TXL and the multiple touch sensing lines RXL. Touch controller 170 can receive the touch sensing voltage VRX and, based on the touch sensing voltage VRX, sense the change in mutual capacitance caused by the touch of the conductive object, thereby detecting the touch.

[0065] On the other hand, the display operation of the display controller 120 and the touch sensing operation of the touch controller 170 may affect each other. Figure 2 To illustrate the interference between the display operation and the touch sensing operation, an example of a portion 110a of the display panel 110 and a portion 160a of the touch sensor 160 is shown. For example, as Figure 2 As shown, a parasitic capacitance PC_DL can be formed between the data line DL and the low power supply voltage line ELVSSL, a parasitic capacitance PC_TX can be formed between the low power supply voltage line ELVSSL and the touch drive line TXL, and a parasitic capacitance PC_RX can be formed between the low power supply voltage line ELVSSL and the touch sensing line RXL. In this case, the touch drive voltage VTX used for the touch sensing operation may interfere with the data voltage VDAT used for the display operation through the parasitic capacitances PC_TX and PC_DL on the touch drive line and the data line. The data voltage VDAT used for the display operation may interfere with the touch drive voltage VTX and / or the touch sensing voltage VRX used for the touch sensing operation through the parasitic capacitances PC_DL and PC_RX on the touch sensing line (or the parasitic capacitance PC_TX on the touch drive line and the mutual capacitance CM between the touch drive line TXL and the touch sensing line RXL).

[0066] In the display device 100 according to various embodiments of the present invention, the display controller 120 can transmit a timing signal representing the timing of the display operation to the touch controller 170. The touch controller 170 can perform the touch sensing operation at a timing different from the timing of the display operation based on the timing signal, so as to reduce or prevent interference between the display operation and the touch sensing operation. In one embodiment, as... Figure 1As shown, the display controller 120 can act as the timing signal, transmitting a vertical synchronization signal VSYNC (or an internal vertical synchronization signal IVSYNC) representing the timing of each frame interval (e.g., start timing) via the vertical synchronization signal line VSYNCL, and a horizontal synchronization signal HSYNC (or an internal horizontal synchronization signal IHSYNC) representing the timing of each horizontal time interval (e.g., start timing) via the horizontal synchronization signal line HSYNCL. In this case, as... Figure 3 As shown, the display controller 120 changes the data voltage VDAT used for the display operation within a first time T1 of each horizontal time HT, and the touch controller 170 changes the touch driving voltage VTX used for the touch sensing operation within a second time T2 of each horizontal time HT that does not overlap with the first time T1, thereby reducing or preventing interference between the data voltage VDAT used for the display operation and the touch driving voltage VTX used for the touch sensing operation.

[0067] However, even if the touch controller 170 receives the vertical sync signal VSYNC and the horizontal sync signal HSYNC from the display controller 120, it is difficult for the touch controller 170 to know the driving frequency (or frame rate), driving mode, etc. of the display device 100, making it difficult to handle various frame rates and driving modes of the display device 100. On the other hand, if a separate channel is formed between the display controller 120 and the touch controller 170 to provide display driving information such as the frame rate and driving mode of the display device 100, this channel may have high redundancy because it is not frequently used. Furthermore, if the data channel between the external main processor and the display controller 120 is also shared with the touch controller 170, the data between the external main processor and the display controller 120 and the data between the display controller 120 and the touch controller 170 may conflict with each other.

[0068] To address this problem, in the display device 100 according to various embodiments of the present invention, the display controller 120 can modulate the timing signal (i.e., the horizontal synchronization signal HSYNC and / or the vertical synchronization signal VSYNC) during blank intervals in the frame interval, thereby providing the display driving information to the touch controller 170. Here, modulating the timing signal can mean changing or adjusting the timing signal in any way.

[0069] In one embodiment, in order to modulate the timing signal, such as Figure 1As shown, the controller 150 may include a timing signal encoder 190 that modulates or encodes the timing signal. The timing signal encoder 190 may receive an internal vertical synchronization signal IVSYNC and an internal horizontal synchronization signal IHSYNC from an internal timing signal generator 180, and modulate or encode the internal vertical synchronization signal IVSYNC and / or the internal horizontal synchronization signal IHSYNC in the blank interval to represent the display driving information, thereby generating a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC that not only represent the timing of the display operation but also the display driving information, and providing the vertical synchronization signal VSYNC and the horizontal synchronization signal HSYNC to the touch controller 170.

[0070] In one embodiment, the timing signal encoder 190 can modulate at least one of the presence or absence of pulses of the timing signal in each horizontal time interval of the blank interval, the pulse phase of the timing signal in the blank interval, and the pulse width of the timing signal in the blank interval, thereby providing the display driving information to the touch controller 170. In one example, as shown in reference Figures 6 to 9 As described later, the timing signal encoder 190 can encode the horizontal synchronization signal HSYNC in the blank interval such that whether the horizontal synchronization signal HSYNC has a pulse in each horizontal time of the blank interval matches the bits of the drive information data representing the display drive information. In other examples, see reference... Figures 10 to 13 As described later, the timing signal encoder 190 can encode the horizontal synchronization signal HSYNC in the blank interval such that the phase of the pulses of the horizontal synchronization signal HSYNC from the start time point of the blank interval matches the drive information data representing the display drive information. In yet another example, as referred to Figures 14 to 17 As described later, the timing signal encoder 190 can encode the vertical sync signal VSYNC in the blank interval such that the pulse width of the vertical sync signal VSYNC in the blank interval matches the drive information data representing the display drive information. In yet another example, as referred to Figures 18 to 21 As described later, the timing signal encoder 190 can encode the vertical synchronization signal VSYNC in the blank interval such that the phase of the pulses of the vertical synchronization signal VSYNC from the start time point of the blank interval matches the drive information data representing the display drive information. However, the modulation or encoding of the timing signal based on the timing signal encoder 190 is not limited to the example described above.

[0071] The display driving information represented by the modulated or encoded timing signal may include at least one of the following: frame rate information representing the frame rate at which the display panel 110 is driven, scan mode information representing the scan mode of the display panel 110, and drive voltage information representing the drive voltage supplied to the display panel 110.

[0072] In one embodiment, the display controller 120 can modulate the horizontal sync signal HSYNC and / or the vertical sync signal VSYNC in the blank interval to provide the frame rate information to the touch controller 170 as the display driving information. The touch controller 170 can change the timing of the touch sensing operation based on the frame rate information. For example, when the touch controller 170 receives the frame rate information representing a frame rate of approximately 120Hz, such as... Figure 4 As shown in 210, the touch controller 170 can perform the touch sensing operation of providing touch driving voltage VTX to multiple touch driving lines TXL within the valid interval AP of the frame interval FP during which the display operation of providing data voltage VDAT to each pixel PX is performed. In this case, as Figure 3 As shown, the touch controller 170 can change the touch drive voltage VTX used for the touch sensing operation within each horizontal time HT of the effective interval AP, and within a second time T2 that does not overlap with the first time T1 of the time for changing the data voltage VDAT used for the display operation. However, when the touch controller 170 receives the frame rate information representing a frame rate of approximately 60Hz, as... Figure 4 As shown in 230, the touch controller 170 can perform the touch sensing operation within the blank interval BP of the frame interval FP where the display operation is not performed. This further reduces or prevents interference between the data voltage VDAT used to perform the display operation and the touch drive voltage VTX used to perform the touch sensing operation.

[0073] In other embodiments, the display controller 120 may modulate the horizontal sync signal HSYNC and / or the vertical sync signal VSYNC in the blank interval to provide the touch controller 170 with scan mode information representing a normal scan mode or a high-speed scan mode as the display driving information. The touch controller 170 may change the timing of the touch sensing operation based on the scan mode information. For example, when the touch controller 170 receives the scan mode information representing the normal scan mode of the display operation (or display scan operation) that provides scan signals SS and data voltages VDAT to multiple pixels PX via each frame interval FP (or the effective interval of each frame interval FP), such as Figure 5As shown in 250, the touch controller 170 can perform the touch sensing operation within a frame interval FP (or the effective interval of each frame interval FP) during which the display operation (or the display scan operation) is performed. However, when the touch controller 170 receives the scan mode information indicating the high-speed scan mode of the display operation (or the display scan operation) that provides scan signals SS and data voltages VDAT to multiple pixels PX via the first interval FH (e.g., the first half of the frame interval FP) of each frame interval FP, as... Figure 5 As shown in 270, the touch controller 170 can perform the touch sensing operation in a second interval SH (e.g., the second half of the frame interval FP), which is different from the first interval FH of the frame interval FP that performs the display operation (or the display scanning operation). This further reduces or prevents interference between the data voltage VDAT used for the display operation and the touch drive voltage VTX used for the touch sensing operation.

[0074] on the other hand, Figure 4 The image shows an example of a touch controller 170 receiving the frame rate information as the display driving information. Figure 5 The illustration shows an example of a touch controller 170 receiving the scan mode information as display driving information, but the display driving information provided to the touch controller 170 is not limited to... Figure 4 and Figure 5 For example, the display driving information may include all of the frame rate information and the scan mode information, or may include other information together with or instead of the frame rate information or the scan mode information. For example, the display driving information may include driving voltage information regarding the driving voltage supplied to the display panel 110 (e.g., data voltage VDAT, high power supply voltage ELVDD, and / or low power supply voltage ELVSS), and the touch controller 170 may change the timing of the touch sensing operation based on the driving voltage information.

[0075] As described above, in the display device 100 according to various embodiments of the present invention, the display controller 120 transmits a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC, representing the timing of the display operation, to the touch controller 170. The horizontal synchronization signal HSYNC and / or the vertical synchronization signal VSYNC are modulated or encoded in the blank interval to provide the display driving information to the touch controller 170. Therefore, the display driving information can be provided to the touch controller 170 without a separate channel for providing the display driving information, and interference between the display operation and the touch sensing operation can be reduced or prevented.

[0076] Figure 6This is a sequence diagram illustrating a method for providing display information in a display device according to an embodiment of the present invention. Figure 7 It is used to explain in Figure 6 The figure shows an example of encoding the horizontal synchronization signal in the blank interval in the method. Figure 8 Is Figure 6 The method includes a timing diagram representing an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal, and output image data. Figure 9 Is Figure 6 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data gating signals, and output image data.

[0077] Reference Figure 1 and Figure 6 In one embodiment of the display device 100 of the present invention, the display controller 120, as display information, can provide not only timing signals indicating the timing of display operations, but also display driving information such as the frame rate and driving mode of the display device 100. The display controller 120 can transmit the vertical synchronization signal VSYNC and the horizontal synchronization signal HSYNC to the touch controller 170 as the timing signals (S310).

[0078] Furthermore, the display controller 120 can encode the horizontal synchronization signal HSYNC in the blank interval, such that whether the horizontal synchronization signal HSYNC has a pulse in each horizontal time period of the blank interval matches the bits of the drive information data representing the display drive information, thereby transmitting the drive information data representing the display drive information to the touch controller 170 in the blank interval (S330).

[0079] For example, such as Figure 7 As shown, the blank interval BP may include a first horizontal time HT1, a second horizontal time HT2, and a third horizontal time HT3. The timing signal encoder 190 of the display controller 120 can modulate or encode the horizontal synchronization signal HSYNC such that whether the horizontal synchronization signal HSYNC has a pulse in the first horizontal time HT1 matches the first bit of the drive information data DIDAT, whether the horizontal synchronization signal HSYNC has a pulse in the second horizontal time HT2 matches the second bit of the drive information data DIDAT, and whether the horizontal synchronization signal HSYNC has a pulse in the third horizontal time HT3 matches the third bit of the drive information data DIDAT. Furthermore, the display drive information DDINFO represented by the drive information data DIDAT may include frame rate information FRI and scan mode information SMI.

[0080] For example, such as Figure 7As shown in 410, the horizontal synchronization signal HSYNC, which has no pulse during the first horizontal time HT1 to the third horizontal time HT3, can correspond to the drive information data DIDAT of "000". The drive information data DIDAT of "000" can represent display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 60Hz and scan mode information SMI indicating a normal scan mode. Furthermore, as... Figure 7 As shown in 420, the horizontal synchronization signal HSYNC, which has no pulse during the first horizontal time HT1 and the second horizontal time HT2 but has a pulse during the third horizontal time HT3, can correspond to the drive information data DIDAT of "001". The drive information data DIDAT of "001" can represent display drive information DDINFO including frame rate information FRI representing a frame rate of approximately 30Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 7 As shown in 430, the horizontal synchronization signal HSYNC, which has no pulse during the first horizontal time HT1 and the third horizontal time HT3 but has a pulse during the second horizontal time HT2, can correspond to the drive information data DIDAT of "010". The drive information data DIDAT of "010" can represent display drive information DDINFO including frame rate information FRI representing a frame rate of approximately 10Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 7 As shown in 440, the horizontal synchronization signal HSYNC, which has no pulse during the first horizontal time HT1 and pulses during the second horizontal time HT2 and the third horizontal time HT3, can correspond to the drive information data DIDAT of "011". The drive information data DIDAT of "011" can represent display drive information DDINFO including frame rate information FRI representing a frame rate of approximately 1 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 7 As shown in 450, the horizontal synchronization signal HSYNC, which has no pulses during the second horizontal time HT2 and the third horizontal time HT3 but has pulses during the first horizontal time HT1, can correspond to the drive information data DIDAT of "100". The drive information data DIDAT of "100" can represent display drive information DDINFO including frame rate information FRI indicating a frame rate of approximately 120Hz and scan mode information SMI indicating a high-speed scan mode. Furthermore, as... Figure 7As shown in 460, the horizontal synchronization signal HSYNC, which has no pulse during the second horizontal time HT2 but has pulses during the first horizontal time HT1 and the third horizontal time HT3, can correspond to the drive information data DIDAT of "101". The drive information data DIDAT of "101" can represent display drive information DDINFO including frame rate information FRI representing a frame rate of approximately 60Hz and scan mode information SMI representing the high-speed scan mode. Furthermore, as... Figure 7 As shown in 470, the horizontal synchronization signal HSYNC, which has no pulse during the third level time HT3 and has pulses during the first level time HT1 and the second level time HT2, can correspond to the drive information data DIDAT of "110". The drive information data DIDAT of "110" can represent display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 30Hz and scan mode information SMI indicating the high-speed scan mode. Furthermore, as... Figure 7 As shown in 480, the horizontal synchronization signal HSYNC, which has pulses during the first horizontal time HT1 to the third horizontal time HT3, can correspond to the drive information data DIDAT of "111". The drive information data DIDAT of "111" can represent display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 10Hz and scan mode information SMI indicating the high-speed scan mode. On the other hand, Figure 7 The image shows an example of the horizontal synchronization signal HSYNC, drive information data DIDAT, and display drive information DDINFO encoded in the blank interval BP, but the horizontal synchronization signal HSYNC, drive information data DIDAT, and display drive information DDINFO are not limited to these. Figure 7 Example.

[0081] Furthermore, in one embodiment, the display controller 120 can switch the vertical synchronization signal VSYNC at the start time of the blank interval BP, thereby timing the timing for notifying the touch controller 170 of the start of the transmission of drive information data DIDAT. For example, as Figure 8As shown, in the active interval AP, the vertical sync signal VSYNC has an invalid level (e.g., high level), the horizontal sync signal HSYNC is switched periodically (e.g., every horizontal time interval), the internal data strobe signal IDE has an valid level (e.g., low level), and the output image data ODAT provided from the controller 150 to the data driver 130 can be the valid image data VALD. Furthermore, in the blank interval BP between each active interval AP, the internal data strobe signal IDE can have an invalid level (e.g., high level), and the output image data ODAT can be the invalid image data INVD. The display controller 120 can encode the horizontal sync signal HSYNC in the blank interval BP such that whether the horizontal sync signal HSYNC has a pulse in each horizontal time interval HT1, HT2, HT3 of the blank interval BP matches the bits of the drive information data DIDAT, thereby allowing the drive information data DIDAT representing the display drive information DDINFO to be transmitted to the touch controller 170 in the blank interval BP. Furthermore, the display controller 120 can switch the vertical synchronization signal VSYNC at the start time of the blank interval BP, that is, modulate the vertical synchronization signal VSYNC so that there is a pulse 490 in the initial part of the first horizontal time HT1 of the blank interval BP, thereby notifying the touch controller 170 of the start timing of the transmission of the drive information data DIDAT.

[0082] In other embodiments, such as Figure 9 As shown, the display controller 120 can modulate the vertical synchronization signal VSYNC such that at the beginning time of the blank interval BP, the vertical synchronization signal VSYNC has a first edge 491 (e.g., a falling edge) to notify the touch controller 170 of the start timing of the transmission of the drive information data DIDAT, and at the end time of the blank interval BP, the vertical synchronization signal VSYNC has a second edge 492 (e.g., a rising edge) to notify the touch controller 170 of the end timing of the transmission of the drive information data DIDAT.

[0083] As described above, in a display device 100 according to an embodiment of the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170, and modulate the presence or absence of pulses of the horizontal synchronization signal HSYNC in each horizontal time interval HT1, HT2, HT3 of the blank interval BP, thereby providing display driving information DDINFO to the touch controller 170. Therefore, the display driving information DDINFO can be provided to the touch controller 170 without a separate channel for providing the display driving information DDINFO, reducing or preventing interference between display operations and touch sensing operations.

[0084] Figure 10 This is a sequence diagram illustrating a method for providing display information in a display device according to other embodiments of the present invention. Figure 11 It is used to explain in Figure 10 The figure shows an example of encoding the horizontal synchronization signal in the blank interval in the method. Figure 12 Is Figure 10 The method uses a timing diagram to represent an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal, and output image data. Figure 13 Is Figure 10 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data strobe signals, and output image data.

[0085] Reference Figure 1 and Figure 10 In other embodiments of the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170 (S510), and can encode the horizontal synchronization signal HSYNC in the blank interval such that the phase of the pulse of the horizontal synchronization signal HSYNC from the start time point of each blank interval is matched with the driving information data representing the display driving information, thereby transmitting the driving information data representing the display driving information to the touch controller 170 in the blank interval (S530).

[0086] For example, such as Figure 11 As shown, the timing signal encoder 190 of the display controller 120 can encode the horizontal synchronization signal HSYNC in the blank interval BP, such that the time or phase of the pulse of the horizontal synchronization signal HSYNC from the start time point of the blank interval BP to the falling edge matches the drive information data DIDAT. Furthermore, the display drive information DDINFO represented by the drive information data DIDAT may include frame rate information FRI and scan mode information SMI.

[0087] For example, such as Figure 11 As shown in 610, the horizontal synchronization signal HSYNC, with a pulse phase P0 of approximately 0 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 60 Hz and scan mode information SMI representing a normal scan mode. Furthermore, as... Figure 11 As shown in Figure 620, the horizontal synchronization signal HSYNC, with a pulse phase P1 of approximately 90 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 30 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 11As shown in 630, the horizontal synchronization signal HSYNC, with a pulse phase P2 of approximately 180 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 10 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 11 As shown in Figure 640, the horizontal synchronization signal HSYNC, with a pulse phase P3 of approximately 270 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 1 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 11 As shown in Figure 650, the horizontal synchronization signal HSYNC, with a pulse phase P4 of approximately 360 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 120Hz and scan mode information SMI indicating a high-speed scan mode. Furthermore, as... Figure 11 As shown in Figure 660, the horizontal synchronization signal HSYNC, with a pulse phase P5 of approximately 450 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 60 Hz and scan mode information SMI representing the high-speed scan mode. Furthermore, as... Figure 11 As shown in Figure 670, the horizontal synchronization signal HSYNC, with a pulse phase P6 of approximately 540 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 30 Hz and scan mode information SMI representing the high-speed scan mode. Furthermore, as... Figure 11 As shown in Figure 680, the horizontal synchronization signal HSYNC, with a pulse phase P7 of approximately 630 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 10 Hz and scan mode information SMI representing the high-speed scan mode. On the other hand, Figure 11 The diagram shows an example of the pulse phase of the horizontal synchronization signal HSYNC, the drive information data DIDAT, and the display drive information DDINFO; however, the pulse phase of the horizontal synchronization signal HSYNC, the drive information data DIDAT, and the display drive information DDINFO are not limited to these examples. Figure 11 Example.

[0088] Furthermore, in one embodiment, such as Figure 12 As shown, the display controller 120 can modulate the vertical synchronization signal VSYNC such that at the start time of the blank interval BP, the vertical synchronization signal VSYNC has a pulse 690, in order to notify the touch controller 170 of the start timing of the transmission of the drive information data DIDAT. In other embodiments, such as Figure 13As shown, the display controller 120 can modulate the vertical synchronization signal VSYNC such that at the beginning time of the blank interval BP, the vertical synchronization signal VSYNC has a first edge 691 (e.g., a falling edge) to notify the touch controller 170 of the start timing of the transmission of the drive information data DIDAT, and at the end time of the blank interval BP, the vertical synchronization signal VSYNC has a second edge 692 (e.g., a rising edge) to notify the touch controller 170 of the end timing of the transmission of the drive information data DIDAT.

[0089] As described above, in the display device 100 according to other embodiments of the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170, and modulate the pulse phase of the horizontal synchronization signal HSYNC in the blank interval BP, thereby providing display driving information DDINFO to the touch controller 170. Thus, the display driving information DDINFO can be provided to the touch controller 170 without a separate channel for providing the display driving information DDINFO, reducing or preventing interference between display operations and touch sensing operations.

[0090] Figure 14 This is a sequence diagram illustrating a method for providing display information in a display device according to another embodiment of the present invention. Figure 15 It is used to explain in Figure 14 The figure shows an example of encoding the vertical synchronization signal in the blank interval in the method. Figure 16 Is Figure 14 The method uses a timing diagram to represent an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal, and output image data. Figure 17 Is Figure 14 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data strobe signals, and output image data.

[0091] Reference Figure 1 and Figure 14 In another embodiment of the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170 (S710). The vertical synchronization signal VSYNC in the blank interval is encoded such that the pulse width of the vertical synchronization signal VSYNC in each blank interval matches the driving information data representing the display driving information, thereby the driving information data representing the display driving information can be transmitted to the touch controller 170 in the blank interval (S730).

[0092] For example, such as Figure 15As shown, the timing signal encoder 190 of the display controller 120 can encode the vertical synchronization signal VSYNC in the blank interval BP, so that the pulse widths W1, W2, and W3 of the vertical synchronization signal VSYNC in the blank interval BP are matched with the drive information data DIDAT. Furthermore, the display drive information DDINFO represented by the drive information data DIDAT may include frame rate information FRI and scan mode information SMI.

[0093] For example, such as Figure 15 As shown in 810, the vertical synchronization signal VSYNC, having a pulse width W1 corresponding to the first horizontal time HT1 (i.e., a pulse width W1 corresponding to the first horizontal time 1H), can correspond to display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 120Hz and scan mode information SMI indicating a high-speed scan mode. Furthermore, as... Figure 15 As shown in 830, the vertical synchronization signal VSYNC, having a pulse width W2 corresponding to the first horizontal time HT1 and the second horizontal time HT2 (i.e., the pulse width W2 corresponding to the second horizontal time 2H), can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 60Hz and scan mode information SMI representing the high-speed scan mode. Furthermore, as... Figure 15 As shown in 850, the vertical synchronization signal VSYNC, having a pulse width W3 corresponding to the first horizontal time HT1 to the third horizontal time HT3 (i.e., the pulse width W3 corresponding to the third horizontal time 3H), can correspond to the display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 60Hz and scan mode information SMI indicating a normal scan mode. On the other hand, Figure 15 The diagram shows an example of the pulse width of the vertical sync signal VSYNC, the drive information data DIDAT, and the display drive information DDINFO; however, the pulse width of the vertical sync signal VSYNC, the drive information data DIDAT, and the display drive information DDINFO are not limited to these parameters. Figure 15 Example.

[0094] Furthermore, in one embodiment, such as Figure 16 As shown, the display controller 120 can periodically switch the horizontal synchronization signal HSYNC during the blank interval BP (e.g., every horizontal time interval HT1, HT2, HT3). In other embodiments, such as Figure 17 As shown, the display controller 120 can maintain the horizontal sync signal HSYNC at a constant level (e.g., invalid level or high level) during the blank interval BP, unlike the periodically switching of the active interval AP of the horizontal sync signal HSYNC, so that the timing of the transmission of drive information data DIDAT to the touch controller 170 is notified.

[0095] As described above, in another embodiment of the display device 100 according to the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170, and modulate the pulse width of the vertical synchronization signal VSYNC in the blank interval BP to provide display driving information DDINFO to the touch controller 170. Therefore, the display driving information DDINFO can be provided to the touch controller 170 without a separate channel for providing the display driving information DDINFO, thereby reducing or preventing interference between display operations and touch sensing operations.

[0096] Figure 18 This is a sequence diagram illustrating a method for providing display information in a display device according to another embodiment of the present invention. Figure 19 It is used to explain in Figure 18 The figure shows an example of encoding the vertical synchronization signal in the blank interval in the method. Figure 20 Is Figure 18 The method uses a timing diagram to represent an example of vertical synchronization signal, horizontal synchronization signal, internal data gating signal, and output image data. Figure 21 Is Figure 18 The method represents a timing diagram of other examples of vertical synchronization signals, horizontal synchronization signals, internal data strobe signals, and output image data.

[0097] Reference Figure 1 and Figure 18 In another embodiment of the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170 (S910). The vertical synchronization signal VSYNC in the blank interval is encoded such that the phase of the pulse of the vertical synchronization signal VSYNC from the start time point of each blank interval is matched with the driving information data representing the display driving information, so that the driving information data representing the display driving information can be transmitted to the touch controller 170 in the blank interval (S930).

[0098] For example, such as Figure 19 As shown, the timing signal encoder 190 of the display controller 120 can encode the vertical synchronization signal VSYNC in the blank interval BP, such that the time or phase up to the falling edge of the pulse of the vertical synchronization signal VSYNC in the blank interval BP is matched with the drive information data DIDAT. Furthermore, the display drive information DDINFO represented by the drive information data DIDAT may include frame rate information FRI and scan mode information SMI.

[0099] For example, such as Figure 19As shown in 1010, the vertical sync signal VSYNC, with a pulse phase P0 of approximately 0 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 60 Hz and scan mode information SMI representing a normal scan mode. Furthermore, as... Figure 19 As shown in 1020, the vertical sync signal VSYNC, with a pulse phase P1 of approximately 90 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 30 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 19 As shown in 1030, the vertical sync signal VSYNC, with a pulse phase P2 of approximately 180 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 10 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 19 As shown in 1040, the vertical sync signal VSYNC, with a pulse phase P3 of approximately 270 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 1 Hz and scan mode information SMI representing the normal scan mode. Furthermore, as... Figure 19 As shown in Figure 1050, the vertical sync signal VSYNC, with a pulse phase P4 of approximately 360 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI indicating a frame rate of approximately 120Hz and scan mode information SMI indicating a high-speed scan mode. Furthermore, as... Figure 19 As shown in 1060, the vertical synchronization signal VSYNC, with a pulse phase P5 of approximately 450 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 60 Hz and scan mode information SMI representing the high-speed scan mode. Furthermore, as... Figure 19 As shown in 1070, the vertical synchronization signal VSYNC, with a pulse phase P6 of approximately 540 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 30 Hz and scan mode information SMI representing the high-speed scan mode. Furthermore, as... Figure 19 As shown in Figure 1080, the vertical synchronization signal VSYNC, with a pulse phase P7 of approximately 630 degrees, can correspond to display drive information DDINFO, which includes frame rate information FRI representing a frame rate of approximately 10 Hz and scan mode information SMI representing the high-speed scan mode. On the other hand, Figure 19 The diagram shows an example of the pulse phase of the vertical synchronization signal VSYNC, the drive information data DIDAT, and the display drive information DDINFO; however, the pulse phase of the vertical synchronization signal VSYNC, the drive information data DIDAT, and the display drive information DDINFO are not limited to these examples. Figure 19 Example.

[0100] Furthermore, in one embodiment, such as Figure 20 As shown, the display controller 120 can periodically switch the horizontal synchronization signal HSYNC during the blank interval BP (e.g., every horizontal time interval HT1, HT2, HT3). In other embodiments, such as Figure 21 As shown, the display controller 120 can maintain the horizontal sync signal HSYNC at a constant level (e.g., invalid level or high level) during the blank interval BP, unlike the periodically switching of the active interval AP of the horizontal sync signal HSYNC, so that the timing of the transmission of drive information data DIDAT to the touch controller 170 is notified.

[0101] As described above, in another embodiment of the display device 100 according to the present invention, the display controller 120 can transmit a vertical synchronization signal VSYNC and a horizontal synchronization signal HSYNC to the touch controller 170, and modulate the pulse phase of the vertical synchronization signal VSYNC in the blank interval BP, thereby providing display driving information DDINFO to the touch controller 170. Thus, the display driving information DDINFO can be provided to the touch controller 170 without a separate channel for providing the display driving information DDINFO, reducing or preventing interference between display operations and touch sensing operations.

[0102] Figure 22 This is a block diagram illustrating a display device according to other embodiments of the present invention.

[0103] Reference Figure 22 Other embodiments of the present invention may include a display device 1100 comprising a display panel 110, a display controller 1120, a touch sensor 160, and a touch controller 1170. In one embodiment, the display controller 1120 may include a data driver 130, a scan driver 140, and a controller 1150. Furthermore, the controller 1150 may include an internal timing signal generator 1180 and a timing signal encoder 1190. Figure 22 The display device 1100, in addition to the display controller 1120 transmitting a timing data strobe signal DE representing valid image data to the touch controller 1170 in place of the vertical synchronization signal VSYNC, can have the following functions: Figure 1 The display device 100 has a similar configuration and can be used with Figure 1 The display device 100 operates similarly.

[0104] The timing signal encoder 1190 can receive the internal data strobe signal IDE and the internal horizontal synchronization signal IHSYNC from the internal timing signal generator 1180. In the blank interval, it modulates or encodes the internal data strobe signal IDE and / or the internal horizontal synchronization signal IHSYNC to represent display driving information, thereby generating a data strobe signal DE and a horizontal synchronization signal HSYNC that not only represent the timing of the display operation but also the display driving information. The data strobe signal DE is transmitted to the touch controller 1170 through the data strobe signal line DEL, and the horizontal synchronization signal HSYNC is transmitted through the horizontal synchronization signal line HSYNCL.

[0105] In one embodiment, the timing signal encoder 1190 can modulate at least one of the presence or absence of pulses of the data strobe signal DE (and / or horizontal synchronization signal HSYNC) in each horizontal time of the blank interval, the pulse phase of the data strobe signal DE (and / or horizontal synchronization signal HSYNC) in the blank interval, and the pulse width of the data strobe signal DE (and / or horizontal synchronization signal HSYNC) in the blank interval, thereby providing the display driving information to the touch controller 1170.

[0106] Figure 23 This is a sequence diagram illustrating a method for providing display information in a display device according to other embodiments of the present invention.

[0107] Reference Figure 22 and Figure 23 In other embodiments of the display device 1100 of the present invention, the display controller 1120 may transmit a data strobe signal DE and a horizontal synchronization signal HSYNC to the touch controller 1170 (S1210), and modulate or encode the data strobe signal DE and / or the horizontal synchronization signal HSYNC in each blank interval, thereby providing display driving information to the touch controller 1170 in the blank interval (S1230). In one embodiment, the display controller 1120 may modulate at least one of the presence or absence of pulses of the data strobe signal DE and / or the horizontal synchronization signal HSYNC in each horizontal time of the blank interval, the pulse phase of the data strobe signal DE and / or the horizontal synchronization signal HSYNC in the blank interval, and the pulse width of the data strobe signal DE and / or the horizontal synchronization signal HSYNC in the blank interval, thereby providing the display driving information to the touch controller 1170.

[0108] As described above, in the display device 1100 according to other embodiments of the present invention, the display controller 1120 can transmit a data strobe signal DE and a horizontal synchronization signal HSYNC to the touch controller 1170, and modulate the data strobe signal DE and / or the horizontal synchronization signal HSYNC in the blank interval BP to provide the display driving information to the touch controller 1170. Therefore, the display driving information can be provided to the touch controller 1170 without a separate channel for providing the display driving information, and interference between display operation and touch sensing operation can be reduced or prevented.

[0109] Figure 24 This is a block diagram illustrating a display device according to another embodiment of the present invention.

[0110] Reference Figure 24 Another embodiment of the present invention relates to a display device 1300, which may include a display panel 1310, a display controller 1330, and a peripheral device 1350. Figure 24 The display device 1300, in addition to including peripheral devices 1350 together with or in place of the touch sensing device, can be connected with... Figure 1 The display device 100 or Figure 22 The display device 1100 has a similar configuration and can perform similar operations.

[0111] The display controller 1330 can transmit a timing signal STM representing the timing of display operations to the peripheral device 1350, and modulate the timing signal STM in blank intervals within frame intervals to provide display driving information to the peripheral device 1350. In one embodiment, the peripheral device 1350 may include at least one of a touch sensing device for sensing touch, an EMR digitizer for sensing an electromagnetic resonance (EMR) pen, a Wi-Fi device for performing Wi-Fi communication, and a Bluetooth device for performing Bluetooth communication, but is not limited thereto.

[0112] As described above, in another embodiment of the display device 1300 according to the present invention, the display controller 1330 can transmit a timing signal STM to the peripheral device 1350, and modulate the timing signal STM in a blank interval to provide the display driving information to the peripheral device 1350. Therefore, the display driving information can be provided to the peripheral device 1350 without a separate channel for providing the display driving information, thereby reducing or preventing interference between display operation and the operation of the peripheral device 1350.

[0113] Figure 25 This is a block diagram illustrating an electronic device including a display device according to various embodiments of the present invention.

[0114] Reference Figure 25 Electronic device 2100 may include processor 2110, storage device 2120, storage device 2130, input / output device 2140, power supply 2150, and display device 2160. Electronic device 2100 may communicate with video card, sound card, memory card, USB device, etc., or may include various ports that can communicate with other systems.

[0115] Processor 2110 can perform specific calculations or tasks. According to embodiments, processor 2110 can be a microprocessor, central processing unit (CPU), etc. Processor 2110 can be connected to other components via address bus, control bus, and data bus, etc. According to embodiments, processor 2110 can also be connected to an expansion bus such as a Peripheral Component Interconnect (PCI) bus.

[0116] Storage device 2120 can store data required for the operation of electronic device 2100. For example, storage device 2120 may include non-volatile storage devices such as EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), Flash Memory, PRAM (Phase Change Random Access Memory), RRAM (Resistance Random Access Memory), NFGM (Nano Floating Gate Memory), PoRAM (Polymer Random Access Memory), MRAM (Magnetic Random Access Memory), FRAM (Ferroelectric Random Access Memory) and / or volatile storage devices such as DRAM (Dynamic Random Access Memory), SRAM (Static Random Access Memory), and mobile DRAM.

[0117] Storage device 2130 may include solid-state drives (SSDs), hard disk drives (HDDs), CD-ROMs, etc. Input / output devices 2140 may include input components such as keyboards, keypads, touchpads, touchscreens, mice, etc., and output components such as speakers, printers, etc. Power supply 2150 provides the power required for the operation of electronic device 2100. Display device 2160 can be connected to other components via the aforementioned bus or other communication links.

[0118] In the display device 2160 according to various embodiments of the present invention, the display controller can transmit a timing signal to a peripheral device and modulate the timing signal in a blank interval to provide display driving information to the peripheral device. Therefore, the display driving information can be provided to the peripheral device without a separate channel for providing the display driving information, thereby reducing or preventing interference between display operation and the operation of the peripheral device.

[0119] According to the embodiments, the electronic device 2100 may be any electronic device including the display device 2160, such as a mobile phone, smartphone, tablet computer, digital television, 3D TV, personal computer (PC), home electronic device, laptop computer, personal digital assistant (PDA), portable multimedia player (PMP), digital camera, music player, portable game console, navigation device, etc.

[0120] (Industry availability) This invention is applicable to any display device and electronic device including it. For example, this invention is applicable to any electronic device including a display device such as a mobile phone, smartphone, tablet computer, digital television, 3D TV, personal computer (PC), home electronic device, laptop computer, personal digital assistant (PDA), portable multimedia player (PMP), digital camera, music player, portable game console, navigation device, etc.

[0121] The present invention has been described above with reference to various embodiments thereof. However, those skilled in the art should understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the invention as set forth in the claims.

Claims

1. A display device, characterized in that, include: Display panel; displays images. Touch sensor, senses touch; The display controller drives the display panel; as well as The touch controller drives the touch sensor. The display controller transmits a timing signal representing the timing of display operations to the touch controller, and modulates the timing signal in the blank intervals of the frame interval, thereby providing display driving information to the touch controller. The timing signal includes: The vertical synchronization signal representing the timing of the frame interval; as well as The horizontal synchronization signal represents the timing of each horizontal time. The display controller encodes the horizontal synchronization signal in the blank interval such that whether the horizontal synchronization signal has a pulse in each horizontal time period in the blank interval matches the bits of the drive information data representing the display drive information, thereby transmitting the drive information data representing the display drive information to the touch controller in the blank interval.

2. The display device according to claim 1, characterized in that, The display controller modulates at least one of the presence or absence of pulses of the timing signal in each horizontal time of the blank interval, the pulse phase of the timing signal in the blank interval, and the pulse width of the timing signal in the blank interval, thereby providing the display driving information to the touch controller.

3. The display device according to claim 1, characterized in that, The display driving information includes at least one of the following: frame rate information driving the display panel, scan mode information about the display panel, and driving voltage information about the display panel.

4. The display device according to claim 1, characterized in that, The display controller switches the vertical synchronization signal at the start time of the blank interval in order to notify the touch controller of the start timing of the transmission of the drive information data.

5. The display device according to claim 1, characterized in that, The display controller modulates the vertical synchronization signal such that at the beginning of the blank interval, the vertical synchronization signal has a first edge to notify the touch controller of the start timing of the transmission of the drive information data, and at the end of the blank interval, the vertical synchronization signal has a second edge to notify the touch controller of the end timing of the transmission of the drive information data.

6. A display device, characterized in that, include: Display panel; displays images. Touch sensor, senses touch; The display controller drives the display panel; as well as The touch controller drives the touch sensor. The display controller transmits a timing signal representing the timing of display operations to the touch controller, and modulates the timing signal in the blank intervals of the frame interval, thereby providing display driving information to the touch controller. The timing signal includes: The vertical synchronization signal representing the timing of the frame interval; as well as The horizontal synchronization signal represents the timing of each horizontal time. The display controller encodes the horizontal synchronization signal in the blank interval such that the phase of the pulse of the horizontal synchronization signal from the beginning time point of the blank interval matches the driving information data representing the display driving information, thereby transmitting the driving information data representing the display driving information to the touch controller in the blank interval.

7. The display device according to claim 6, characterized in that, The display controller switches the vertical synchronization signal at the start time point of the blank interval in order to notify the touch controller of the start timing of the transmission of the drive information data.

8. The display device according to claim 6, characterized in that, The display controller modulates the vertical synchronization signal such that at the start time point of the blank interval, the vertical synchronization signal has a first edge to notify the touch controller of the start timing of the transmission of the drive information data, and at the end time point of the blank interval, the vertical synchronization signal has a second edge to notify the touch controller of the end timing of the transmission of the drive information data.

9. A display device, characterized in that, include: Display panel; displays images. Touch sensor, senses touch; The display controller drives the display panel; as well as The touch controller drives the touch sensor. The display controller transmits a timing signal representing the timing of display operations to the touch controller, and modulates the timing signal in the blank intervals of the frame interval, thereby providing display driving information to the touch controller. The timing signal includes: The vertical synchronization signal representing the timing of the frame interval; as well as The horizontal synchronization signal represents the timing of each horizontal time. The display controller encodes the vertical synchronization signal in the blank interval such that the phase of the pulse of the vertical synchronization signal from the beginning time point of the blank interval matches the driving information data representing the display driving information, thereby transmitting the driving information data representing the display driving information to the touch controller in the blank interval.

10. The display device according to claim 9, characterized in that, The display controller periodically switches the horizontal synchronization signal in the blank interval.

11. The display device according to claim 9, characterized in that, The display controller maintains the horizontal synchronization signal at a constant level in the blank area to notify the touch controller of the timing of the transmission of the drive information data.

12. A display device, characterized in that, include: Display panel; displays images. Peripheral devices; as well as The display controller drives the display panel. The display controller transmits timing signals indicating the timing of display operations to the peripheral device, and modulates the timing signals in blank intervals within frame intervals to provide display driving information to the peripheral device. The timing signal includes: The vertical synchronization signal representing the timing of the frame interval; as well as The horizontal synchronization signal represents the timing of each horizontal time. The display controller encodes the horizontal synchronization signal in the blank interval such that whether the horizontal synchronization signal has a pulse in each horizontal time period of the blank interval matches the bits of the drive information data representing the display drive information, thereby transmitting the drive information data representing the display drive information to the peripheral device in the blank interval, or The display controller encodes the horizontal synchronization signal in the blank interval such that the phase of the pulses of the horizontal synchronization signal starting from the beginning time point of the blank interval matches the drive information data representing the display drive information, thereby transmitting the drive information data representing the display drive information to the peripheral device in the blank interval, or The display controller encodes the vertical synchronization signal in the blank interval such that the phase of the pulse of the vertical synchronization signal from the beginning time point of the blank interval matches the drive information data representing the display drive information, thereby transmitting the drive information data representing the display drive information to the peripheral device in the blank interval.

13. The display device according to claim 12, characterized in that, The peripheral device includes at least one of the following: a touch sensing device for sensing touch, an electromagnetic resonance digitizer for sensing electromagnetic resonance pens, a Wi-Fi device for performing Wi-Fi communication, and a Bluetooth device for performing Bluetooth communication.

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