Display system and driving method thereof

Abstract

Disclosed are a display system and a driving method thereof. The display system can include a display portion including a plurality of sub display devices, and a main processor that divides source image data into a plurality of sub input image data corresponding to each of the plurality of sub display devices, and provides each of the plurality of sub display devices with the plurality of sub input image data. Each of the plurality of sub display devices can include a sub display panel including a plurality of pixels, and a panel driving portion that receives corresponding sub input image data among the plurality of sub input image data, and drives the sub display panel based on the corresponding sub input image data. The main processor can include a data generation portion that senses information of the plurality of sub display devices included in the display portion, and calculates the number of the plurality of sub display devices.

Description

Technical Field

[0001] The present invention relates to a display system and a driving method for the display system, and more specifically, to a display system comprising a plurality of sub-display devices and a driving method for the display system. Background Technology

[0002] Display devices such as Liquid Crystal Display (LCD) and Organic Light Emitting Diode (OLED) displays include a display panel and a panel driving unit. The display panel includes multiple gate lines, multiple data lines, and multiple pixels connected to the gate lines and data lines. The panel driving unit includes a gate driving unit that provides gate signals to each of the gate lines and a data driving unit that provides data voltages to each of the data lines.

[0003] Generally, the liquid crystal display device includes: a first substrate including pixel electrodes; a second substrate including a common electrode; and a liquid crystal layer sandwiched between the substrates. Applying a voltage to the two electrodes generates an electric field in the liquid crystal layer. By adjusting the intensity of this electric field, the transmittance of light passing through the liquid crystal layer is adjusted, thereby obtaining the desired image.

[0004] The organic light-emitting diode (OLED) display device uses OLEDs to display images. The OLED emits light by the recombination of holes provided by the anode and electrons provided by the cathode in a light-emitting layer between the anode and cathode electrodes.

[0005] On the one hand, in order to display ultra-high resolution images that cannot be displayed on a single display device, a tiled display is used, which integrates multiple display devices into a single large display device. The tiled display contains a graphics card that contains information about the number of each display and the total number of pixels. Summary of the Invention

[0006] Therefore, the technical problem of the present invention focuses on this point, and the object of the present invention is to provide a display system that can calculate the number of multiple sub-display devices.

[0007] Another object of the present invention is to provide a driving method for the display system.

[0008] However, the problems to be solved by the present invention are not limited to those mentioned above, and can be extended in various ways without departing from the spirit and scope of the present invention.

[0009] To achieve the aforementioned objectives of the present invention, a display system according to one embodiment may include: a display unit including a plurality of sub-display devices; and a main processor that segments source image data into a plurality of sub-input image data corresponding to each of the plurality of sub-display devices, and provides the plurality of sub-input image data to each of the plurality of sub-display devices. Alternatively, each of the plurality of sub-display devices may include: a sub-display panel including a plurality of pixels; and a panel driving unit that receives corresponding sub-input image data from the plurality of sub-input image data and drives the sub-display panel based on the corresponding sub-input image data. Alternatively, the main processor may include: a data generation unit that senses information about the plurality of sub-display devices included in the display unit and calculates the number of the plurality of sub-display devices.

[0010] In one embodiment of the present invention, the data generation unit may include: a sensing signal generation unit that outputs a first sensing signal to the display unit in a first direction and outputs a second sensing signal to a second direction perpendicular to the first direction.

[0011] In one embodiment of the present invention, the data generation unit may further include: a quantity calculation unit that feeds back the first sensing signal and the second sensing signal, calculates the voltage drop of the first sensing signal and the second sensing signal, and thereby calculates the number of the plurality of sub-display devices included in the display unit.

[0012] In one embodiment of the present invention, the main processor may determine the sub-input image data based on the number of sub-display devices.

[0013] In one embodiment of the present invention, each of the plurality of sub-display devices may include: a pixel data generation unit, including a gate line for transmitting gate signals and a data line for transmitting data signals, wherein information of the plurality of pixels is sensed through the gate line and the data line, and the number of the plurality of pixels is calculated.

[0014] In one embodiment of the present invention, each of the plurality of sub-display devices may determine the gate signal and the data signal based on the number of pixels.

[0015] In one embodiment of the present invention, the pixel data generation unit may output a first pixel sensing signal to the gate line, feed back the first pixel sensing signal, calculate the voltage drop of the first pixel sensing signal, and thereby calculate the number of pixels in the first direction of the sub-display panel.

[0016] In one embodiment of the present invention, the pixel data generation unit may output a second pixel sensing signal to the data line, feed back the second pixel sensing signal, calculate the voltage drop of the second pixel sensing signal, and thereby calculate the number of pixels in the second direction of the sub-display panel.

[0017] In one embodiment of the present invention, the sub-display panel may have a shape that is not rectangular.

[0018] In one embodiment of the present invention, at least one of the sub-display panels may have a different shape than any of the sub-display panels.

[0019] To achieve another objective of the present invention, a driving method for a display system according to one embodiment may include: a step of sensing information of a plurality of sub-display devices disposed in a display unit in a first direction and a second direction; a step of calculating the number of the plurality of sub-display devices; a step of segmenting source image data into a plurality of sub-input image data corresponding to each of the plurality of sub-display devices; and a step of providing the corresponding plurality of sub-input image data to each of the plurality of sub-display devices. Each of the plurality of sub-display devices may include: a sub-display panel including a plurality of pixels; and a panel driving unit that receives the corresponding sub-input image data and drives the sub-display panel based on the corresponding sub-input image data.

[0020] In one embodiment of the present invention, the step of sensing information of the plurality of sub-display devices may include: outputting a first sensing signal to a first direction of the display unit and outputting a second sensing signal to a second direction perpendicular to the first direction.

[0021] In one embodiment of the present invention, the step of calculating the number of the plurality of sub-display devices may include: feeding back the first sensing signal and the second sensing signal, and calculating the voltage drop of the first sensing signal and the second sensing signal.

[0022] In one embodiment of the present invention, the driving method of the display system may further include the step of determining the sub-input image data based on the number of sub-display devices.

[0023] In one embodiment of the present invention, each of the plurality of sub-display devices may include: a pixel data generation unit, including a gate line for transmitting gate signals and a data line for transmitting data signals, wherein information of the plurality of pixels is sensed through the gate line and the data line, and the number of the plurality of pixels is calculated.

[0024] In one embodiment of the present invention, each of the plurality of sub-display devices may determine the gate signal and the data signal based on the number of pixels.

[0025] In one embodiment of the present invention, the pixel data generation unit may output a first pixel sensing signal to the gate line, feed back the first pixel sensing signal, calculate the voltage drop of the first pixel sensing signal, and thereby calculate the number of pixels in the first direction of the sub-display panel.

[0026] In one embodiment of the present invention, the pixel data generation unit may output a second pixel sensing signal to the data line, feed back the second pixel sensing signal, calculate the voltage drop of the second pixel sensing signal, and thereby calculate the number of pixels in the second direction of the sub-display panel.

[0027] In one embodiment of the present invention, the sub-display panel may have a shape that is not rectangular.

[0028] In one embodiment of the present invention, at least one of the sub-display panels may have a different shape than any of the sub-display panels.

[0029] (Invention effect)

[0030] Based on the display system and driving method described above, the display system can calculate the number of multiple sub-display devices, and based on this, divide the source image data into multiple sub-input image data.

[0031] In addition, each sub-display device can calculate the number of pixels using the gate lines and data lines, and based on this, determine the gate signal and data signal.

[0032] Therefore, the display system of the present invention can transmit image data and signals to each sub-display device and each pixel without a graphics card.

[0033] Ultimately, the display system can shorten the display system's manufacturing time and reduce its power consumption. Attached Figure Description

[0034] Figure 1 This is a block diagram illustrating a display device according to an embodiment of the present invention.

[0035] Figure 2 This is a diagram showing a splicing display composed of a plurality of sub-display panels according to an embodiment of the present invention.

[0036] Figure 3 This is a block diagram illustrating a display system according to an embodiment of the present invention.

[0037] Figure 4 It is shown Figure 3 A block diagram of the data generation unit included in the display system.

[0038] Figure 5 It is used for explanation Figure 3 The flowchart shows the operation of the display system.

[0039] Figure 6 This is a block diagram showing a portion of the sub-display device.

[0040] Figure 7 This is a block diagram showing the pixel data generation unit included in the sub-display device.

[0041] Figure 8 It is used for explanation Figure 7 The flowchart shows the operation of the pixel data generation unit and the operation of the display system.

[0042] Figure 9 This is a diagram showing a splicing display composed of a plurality of sub-display panels according to an embodiment of the present invention.

[0043] Figure 10 This is a diagram showing a splicing display composed of a plurality of sub-display panels according to another embodiment of the present invention.

[0044] (Explanation of reference numerals in the attached image)

[0045] 100: Display panel; 200: Drive control unit

[0046] 210: Pixel data generation unit; 220: Pixel sensing signal generation unit

[0047] 230: Pixel count calculation unit; 300: Gate driving unit

[0048] 400: Gamma reference voltage generation unit; 500: Data drive unit

[0049] 800: Main processor; 810: Data generation unit

[0050] 820: Sensing signal generation unit; 830: Quantity calculation unit

[0051] 900: Sub-display device; 1000: Display system Detailed Implementation

[0052] The present invention will now be described in more detail with reference to the accompanying drawings.

[0053] Figure 1 This is a block diagram illustrating a display device according to an embodiment of the present invention.

[0054] Reference Figure 1 The display device includes a display panel 100 and a display panel driving unit. The display panel driving unit includes a driving control unit 200, a gate driving unit 300, a gamma reference voltage generating unit 400, and a data driving unit 500.

[0055] The display panel 100 includes a display section for displaying images and a peripheral section disposed adjacent to the display section.

[0056] The display panel 100 includes a gate line GL, a data line DL, and pixels electrically connected to both the gate line GL and the data line DL. The gate line GL extends in a first direction D1, and the data line DL extends in a second direction D2 that intersects the first direction D1.

[0057] According to one embodiment of the present invention, each of the pixels can be a red pixel, a green pixel, and a blue pixel. Conversely, each of the pixels can be a white pixel, a magenta pixel, a yellow pixel, and a blue-green pixel.

[0058] The drive control unit 200 receives input image data IMG and input control signal CONT from an external device (not shown). The input image data IMG can be used to mean essentially the same thing as the input image signal. The input image data IMG may include red image data, green image data, and blue image data. Each of the red, green, and blue image data has a grayscale value of 0-255. The grayscale value of the input image data IMG can be represented by R, G, and B. In contrast, the input image data IMG may include white image data. The input image data IMG may also include magenta, yellow, and cyan image data. The input control signal CONT may include a data enable signal and a master clock signal. The input control signal CONT may also include a vertical synchronization signal and a horizontal synchronization signal.

[0059] The drive control unit 200 generates a first control signal CONT1, a second control signal CONT2, a third control signal CONT3, and a data signal DATA based on the input image data IMG and the input control signal CONT.

[0060] The drive control unit 200 generates a first control signal CONT1 for controlling the operation of the gate drive unit 300 based on the input control signal CONT. The drive control unit 200 outputs the first control signal CONT1 to the gate drive unit 300. The first control signal CONT1 may include a vertical start signal and a gate clock signal.

[0061] The drive control unit 200 generates a second control signal CONT2 based on the input control signal CONT for controlling the operation of the data drive unit 500. The drive control unit 200 outputs the second control signal CONT2 to the data drive unit 500. The second control signal CONT2 may include a horizontal start signal and a load signal.

[0062] The drive control unit 200 generates a data signal DATA based on the input image data IMG. The drive control unit 200 outputs the data signal DATA to the data drive unit 500. The data signal DATA can be image data substantially the same as the input image data IMG, or it can be compensated image data generated to correct the input image data IMG. For example, the drive control unit 200 can selectively perform image quality correction, speckle correction, adaptive color correction (ACC), and / or dynamic capacitance compensation (DCC) on the input image data IMG to generate the data signal DATA.

[0063] The drive control unit 200 generates a third control signal CONT3 based on the input control signal CONT, which is used to control the operation of the gamma reference voltage generation unit 400. The drive control unit 200 outputs the third control signal CONT3 to the gamma reference voltage generation unit 400.

[0064] The gate driving unit 300 generates a gate signal for driving the gate line GL in response to the first control signal CONT1 input from the drive control unit 200. The gate driving unit 300 outputs the gate signal to the gate line GL.

[0065] The gamma reference voltage generation unit 400 generates a gamma reference voltage VGREF in response to a third control signal CONT3 input from the drive control unit 200. The gamma reference voltage generation unit 400 provides the gamma reference voltage VGREF to the data drive unit 500. The gamma reference voltage VGREF has a value corresponding to each data signal DATA.

[0066] In one embodiment of the present invention, the gamma reference voltage generation unit 400 may be configured within the drive control unit 200 or the data drive unit 500.

[0067] The data drive unit 500 receives a second control signal CONT2 and a data signal DATA from the drive control unit 200, and receives a gamma reference voltage VGREF from the gamma reference voltage generation unit 400. Using the gamma reference voltage VGREF, the data drive unit 500 converts the data signal DATA into an analog data voltage. The data drive unit 500 outputs the data voltage to the data line DL.

[0068] Figure 2This diagram illustrates a tiled display composed of display devices according to an embodiment of the present invention. A tiled display refers to a large display device that integrates multiple display devices to display ultra-high resolution images that cannot be displayed on a single display device.

[0069] Reference Figure 1 as well as Figure 2 According to an embodiment of the present invention, the display device can be one of the display devices constituting a tiled display. In this case, the display panel 100 included in the display device according to an embodiment of the present invention can correspond to one of the sub-screens constituting the screen of the tiled display. That is, the display panel 100 can be one of the sub-display panels 100a of the tiled display.

[0070] Figure 3 This is a block diagram illustrating a display system 1000 according to an embodiment of the present invention.

[0071] Reference Figure 3 The display system 1000 of the present invention may include: a sub-display device 900; and a main processor 800, which provides image data PRGB to the sub-display devices 900. In one embodiment, each of the sub-display devices 900 may be... Figure 1 The display device. Alternatively, in one embodiment, the display system 1000 may be a tiled display (Tiled-Display) in which the sub-display devices 900 are configured in a tiled form.

[0072] According to an embodiment, the display system 1000 of the present invention, as a tiled display including a sub-display device 900, can be any electronic device such as digital television, 3D television, personal computer (PC), home appliance, laptop computer, etc.

[0073] The sub-display device 900 can be configured in a tiled or matrix configuration. On the one hand, Figure 3 The sub-display device 900 is shown in the middle with 4 4. Examples of matrix configurations; however, according to embodiments, the display system 1000 may include I... The sub-display devices 900 are configured in a J-matrix pattern, where I and J are each any natural number greater than or equal to 1. Furthermore, in one embodiment, the sub-display devices 900 can be detachably combined with each other.

[0074] The main processor 800 can receive source image data sRGB. For example, the main processor 800 can receive source image data sRGB transmitted from a device outside the display system 1000 (e.g., a base station), or receive source image data sRGB from a storage device inside the display system 1000. Additionally, the main processor 800 can divide the source image data sRGB into sub-input image data PRGB corresponding to each sub-display device 900, and provide the sub-input image data PRGB to each sub-display device 900. For example, the main processor 800 and the sub-display devices 900 can be connected in a multi-station manner, and the main processor 800 can transmit the sub-input image data PRGB corresponding to each sub-display device 900.

[0075] In one embodiment, the main processor 800 may include sub-input image data lines. The main processor 800 can be connected to the sub-display devices 900 via the sub-input image data lines. That is, the main processor 800 can transmit sub-input image data PRGB corresponding to each sub-display device 900 via the sub-input image data lines. On one hand, the main processor 800 can sense information about the sub-display devices 900 via the sub-input image data lines. Based on the sensed information of the sub-display devices 900, the main processor 800 can calculate the number of sub-display devices 900. The main processor 800 can reflect the number information of the sub-display devices 900, thereby dividing the source image data sRGB into sub-input image data PRGB.

[0076] Figure 4 It is shown Figure 3 A block diagram of the data generation unit 810 included in the display system 1000. Figure 5 This is a flowchart illustrating the operation of a display system 1000 according to an embodiment of the present invention.

[0077] Reference Figures 3 to 5 The display system 1000 may include a data generation unit 810 that generates data for the sub-display device 900. The data generation unit 810 may include a quantity calculation unit 830 and a sensing signal generation unit 820. In one embodiment, the data generation unit 810 may be located inside the main processor 800, becoming a component of the main processor 800. In another embodiment, the data generation unit 810 may be located outside the main processor 800, transmitting data from the sub-display device 900 to the main processor 800.

[0078] Generally, the display system 1000 uses a method that divides source image data sRGB into sub-input image data pRGB, which is output to the sub-display device 900, using a graphics card. However, using such a graphics card increases the manufacturing time and driving power of the video wall display. To address this issue, the display system 1000 of the present invention can sense information about the sub-display devices 900 and calculate the number of sub-display devices 900 based on this sensing information. The main processor 800 can then reflect the number of sub-display devices 900 and divide the source image data sRGB into sub-input image data pRGB.

[0079] Specifically, the sensing signal generation unit 820 can output a sensing signal (step S820). The quantity calculation unit 830 can calculate the voltage drop of the feedback sensing signal, thereby calculating the number of sub-display devices 900 (step S830). At this time, the main processor 800 can reflect the quantity information of the sub-display devices 900, divide the source image data sRGB into sub-input image data pRGB (step S840), and provide each sub-input image data pRGB to the sub-display device 900 (step S850). Each sub-display device 900 can display an image based on the corresponding sub-input image data pRGB (step S900).

[0080] The sensing signal generation unit 820 can output a sensing signal to the sub-display device 900 via the sub-input image data line (step S820). According to the embodiment, the sub-display device 900 can be configured as I In the J matrix configuration, both I and J are arbitrary natural numbers greater than or equal to 1. The sensing signal generation unit 820 can output a first sensing signal SEN1 to a first direction D1 of the sub-input image data line and a second sensing signal SEN2 to a second direction D2 perpendicular to the first direction D1. The first sensing signal SEN1 can be input to I sub-display devices 900 arranged in the first direction D1 and fed back to the quantity calculation unit 830. The second sensing signal SEN2 can be input to J sub-display devices 900 arranged in the second direction D2 and fed back to the quantity calculation unit 830.

[0081] The quantity calculation unit 830 can calculate the voltage drop of the feedback sensing signal, thereby calculating the number of sub-display devices 900 (step S830). A first sensing signal SEN1 may experience a voltage drop after passing through I sub-display devices 900. The quantity calculation unit 830 can calculate the value I by dividing the magnitude of the voltage drop of the first sensing signal SEN1 by the magnitude of the current and the inherent resistance value of each sub-display device 900. A second sensing signal SEN2 may experience a voltage drop after passing through J sub-display devices 900. The quantity calculation unit 830 can calculate the value J by dividing the magnitude of the voltage drop of the second sensing signal SEN2 by the magnitude of the current and the inherent resistance value of each sub-display device 900. The data calculation unit 830 can generate an I value based on the I value and the J value. J matrix data.

[0082] The main processor 800 can reflect the quantity information of the sub-display devices 900, thereby dividing the source image data sRGB into sub-input image data pRGB (step S840). Specifically, the main processor 800 can input the obtained I J matrix data, the source image data sRGB according to the composition I The number of sub-display devices 900 in the J matrix is ​​divided to determine the sub-input image data PRGB so that the sub-display devices 900 as a whole realize an image corresponding to the source image data SRGB.

[0083] The main processor 800 can provide sub-input image data PRGB to each sub-display device 900 without the need for a separate graphics card. Each sub-display device 900 can display an image based on its corresponding sub-input image data PRGB (step S900). Therefore, the display system 1000 of the present invention does not require a graphics card to be installed in the main processor 800, thus shortening the process time, and since there is no power consumption on the graphics card, the driving power can be reduced.

[0084] Figure 6 This is a block diagram showing a portion of the sub-display device 900.

[0085] Reference Figure 1 , Figure 2 as well as Figure 6 According to an embodiment of the present invention, the display device can be one of the display devices constituting a tiled display. That is, Figure 1 The display device can be Figure 2 One of the sub-display devices 900 of the splicing display.

[0086] Each sub-display device 900 may include gate lines GL and data lines DL. Gate lines GL may extend in a first direction D1, and data lines DL may extend in a second direction D2 intersecting the first direction D1. Gate lines GL may include first gate lines GL1 to nth gate lines GLn. Data lines DL may include first data lines DL1 to mth data lines DLm. Each gate line GL may have a gate initial node and a gate final node. The gate initial node may have a data initial voltage VD0, and the gate final node may have a data final voltage VDm. Each data line DL may have a data initial node and a data final node. The data initial node may have a gate initial voltage VG0, and the data final node may have a gate final voltage VGn. The pixels PX included in the sub-display device 900 may constitute n An m-matrix. At this point, each pixel PX can have its own inherent resistance value.

[0087] Figure 7 It is shown Figure 1 A block diagram of the pixel data generation unit 210 included in the sub-display device 900. Figure 8 It is used for explanation Figure 7 The flowchart shows the operation of the pixel data generation unit 210 and the operation of the display system 1000.

[0088] Reference Figures 3 to 8 The sub-display device 900 may include a pixel data generation unit 210 that generates data for pixels PX. The pixel data generation unit 210 may include a pixel count calculation unit 230 and a pixel sensing signal generation unit 220. In one embodiment, the pixel data generation unit 210 may be located inside the drive control unit 200, thus becoming a component of the drive control unit 200. In other embodiments, the pixel data generation unit 210 may be located outside the drive control unit 200, transmitting pixel PX data to the drive control unit 200.

[0089] Generally, display devices use a method that distributes gate signals and data signals to pixels PX using a graphics card. However, using such a graphics card increases the manufacturing process time and driving power of the display device. To address this issue, the display device of the present invention senses information about pixels PX via gate lines and data lines, and calculates the number of sub-display devices 900 based on the sensed information of the pixels PX. The drive control unit 200 can reflect the number of pixels PX to determine the gate signals and data signals.

[0090] Specifically, the sensing signal generation unit 820 can output a sensing signal (step S820). The quantity calculation unit 830 can calculate the voltage drop of the feedback sensing signal and calculate the number of sub-display devices 900 (step S830). At this time, the main processor 800 can reflect the quantity information of the sub-display devices 900, divide the source image data sRGB into sub-input image data PRGB (step S840), and provide each sub-input image data PRGB to the sub-display devices 900 (step S850). The pixel sensing signal generation unit 220 can output a pixel sensing signal to the gate line and the data line (step S920). The pixel quantity calculation unit 230 can calculate the voltage drop of the feedback pixel sensing signal and calculate the number of pixels PX (step S930). The drive control unit 200 can reflect the quantity information of pixels PX and determine the gate signal and the data signal (step S940). Each sub-display device 900 can display an image based on the corresponding gate signal and data signal (step S950).

[0091] The sensing signal generation unit 820 can output a sensing signal to the sub-display device 900 via the sub-input image data line (step S820). According to the embodiment, the sub-display device 900 can be configured as I In the J matrix configuration, both I and J are arbitrary natural numbers greater than or equal to 1. The sensing signal generation unit 820 may output a first sensing signal SEN1 to a first direction D1 of the sub-input image data line and a second sensing signal SEN2 to a second direction D2 perpendicular to the first direction D1. The first sensing signal SEN1 can be input to I sub-display devices 900 arranged in the first direction D1 and fed back to the quantity calculation unit 830. The second sensing signal SEN2 can be input to J sub-display devices 900 arranged in the second direction D2 and fed back to the quantity calculation unit 830. At this time, the quantity calculation unit 830 can calculate the voltage drop of the fed-back sensing signal, thereby calculating the number of sub-display devices 900 (step S830). The first sensing signal SEN1 may experience a voltage drop as it passes through the I sub-display devices 900. The quantity calculation unit 830 can divide the magnitude of the voltage drop of the first sensing signal SEN1 by the inherent resistance value of each sub-display device 900 to calculate the value I. The second sensing signal SEN2 may experience a voltage drop after passing through J sub-display devices 900. The quantity calculation unit 830 can calculate the J value by dividing the magnitude of the voltage drop of the second sensing signal SEN2 by the inherent resistance value of each sub-display device 900. The data calculation unit 830 can generate I based on the I value and the J value. J matrix data.

[0092] The main processor 800 can reflect the quantity information of the sub-display devices 900 and divide the source image data sRGB into sub-input image data pRGB (step S840). Specifically, the main processor 800 can input the obtained I J matrix data, the source image data sRGB according to the composition I The number of sub-display devices 900 in the J matrix is ​​divided to determine the sub-input image data PRGB so that the sub-display devices 900 as a whole realize an image corresponding to the source image data sRGB. That is, the main processor 800 can provide the sub-input image data PRGB to each sub-display device 900 without a separate graphics card (step S850). Therefore, the display system 1000 of the present invention does not require a graphics card to be installed in the main processor 800, thus shortening the process time, and since there is no power consumption in the graphics card, the driving power can be reduced.

[0093] The pixel sensing signal generation unit 220 can output pixel sensing signals to gate lines and data lines (step S920). For example, the gate line GL can include first gate line GL1 to nth gate line GLn. The pixel sensing signal generation unit 220 can output a first pixel sensing signal to the gate line GL. Each gate line GL can be connected to m pixels PX. As another example, the data line DL can include first data line DL1 to mth data line DLm. The pixel sensing signal generation unit 220 can output a second pixel sensing signal to the data line DL. Each data line DL can be connected to n pixels PX. The first pixel sensing signal and the second pixel sensing signal can be fed back and input to the pixel count calculation unit 230.

[0094] The pixel count calculation unit 230 can calculate the voltage drop of the feedback pixel sensing signal, thereby calculating the number of pixels PX (step S930). Specifically, each gate line GL can have a gate initial node and a gate final node. The gate initial node can have a data initial voltage VD0, and the gate final node can have a data final voltage VDm. The first pixel sensing signal may experience a voltage drop after passing through m pixels PX. The pixel count calculation unit 230 can calculate the value of m by dividing the magnitude of the voltage drop of the first pixel sensing signal by the magnitude of the current and the inherent resistance value of each pixel PX. For example, when the inherent resistance value of each pixel PX is Rp, the number m of pixels PX in the first direction D1 can be calculated by dividing the difference between the data final voltage VDm and the data initial voltage VD0 by the magnitude of the current (Ip) and the inherent resistance value Rp (i.e., m = (VDm - VD0) / (Ip × Rp)). Each data line DL can have a data initial node and a data final node. The initial data node may have an initial gate voltage VG0, and the final data node may have a final gate voltage VGn. The second pixel sensing signal may experience a voltage drop after passing through n pixels PX. The pixel count calculation unit 230 can calculate the value of n by dividing the magnitude of the voltage drop of the second pixel sensing signal by the magnitude of the current and the inherent resistance value of each pixel PX. For example, when the inherent resistance value of each pixel PX is Rp, the number of pixels PX n in the second direction D2 can be calculated by dividing the difference between the final gate voltage VGn and the initial gate voltage VG0 by the magnitude of the current (Ip) and the inherent resistance value Rp (i.e., n = (VGn - VG0) / (Ip × Rp)). The pixel count calculation unit 230 can generate m based on the m value and the n value. n matrix data.

[0095] The drive control unit 200 can input m The n-matrix data reflects the number of pixels PX, thereby determining the gate signal and data signal (step S940). Each sub-display device 900 can display an image based on the corresponding gate signal and data signal (step S950). Therefore, each sub-display device 900 of the present invention does not require a separate graphics card, thus shortening the process time, and since there is no power consumption on the graphics card, the driving power can be reduced.

[0096] Figure 9 This is a diagram showing a video display composed of a sub-display device 900 according to an embodiment of the present invention.

[0097] Reference Figure 9 In a sub-display device 900 according to an embodiment of the present invention, the sub-display panel may have a shape that is not rectangular. For example, such as Figure 9As shown, the sub-display panel 100b can be a regular hexagonal shape. However, as an example of a shape that is not rectangular, according to the embodiment, the sub-display panel 100b can be a triangle, a quadrilateral, a circle, or other shapes. As mentioned above, when the sub-display panel is not rectangular, the splicing display can be made in various forms.

[0098] Figure 10 This is a diagram showing a video display composed of a sub-display device 900 according to another embodiment of the present invention.

[0099] Reference Figure 10 At least one of the sub-display panels included in the sub-display device 900 according to an embodiment of the present invention may have a shape different from any of the sub-display panels. For example, such as Figure 10 As shown, the sub-display panels may include a sub-display panel 100c of a first shape and a sub-display panel 100d of a second shape. However, this is only one example of sub-display panels composed of different shapes from each other; according to the embodiment, the sub-display panels may be composed of a wider variety of shapes. As mentioned above, when the sub-display panels are composed of different shapes from each other, the shape of the spliced ​​display can be freely deformed.

[0100] Multi-panel displays can integrate multiple display devices to display ultra-high resolution images that cannot be displayed on a single display device. However, when the sub-display panels included in a typical multi-panel display are only made in a rectangular shape, it is difficult to manufacture multi-form displays, resulting in limitations on the shape deformation of the multi-panel display. To solve this problem, the display system 1000 of the present invention can include sub-display panels of various shapes and types. At the same time, the display system 1000 of the present invention can calculate the number of sub-display devices 900 included in the display system 1000, thereby achieving the effect of inputting PRGB image data to sub-display panels of various shapes and types without the need for a graphics card.

[0101] (Industry availability)

[0102] This invention can be used in display devices and various devices and systems including them. Therefore, this invention can be effectively used in various electronic devices such as mobile phones, smartphones, PDAs, PMPs, digital cameras, camcorders, PCs, server computers, workstations, laptops, digital TVs, set-top boxes, music players, portable game consoles, navigation systems, smart cards, printers, etc.

[0103] The above description refers to the embodiments. However, those skilled in the art to which this invention pertains should understand that various modifications and variations can be made to this invention without departing from the spirit and scope of the invention as described in the patent claims.

Claims

1. A display system, characterized in that, The display system includes: The display unit includes multiple sub-display devices; and The main processor segments the source image data into multiple sub-input image data corresponding to each of the multiple sub-display devices, and provides the multiple sub-input image data to each of the multiple sub-display devices. Each of the plurality of sub-display devices includes: a sub-display panel, including a plurality of pixels; and a panel driving unit, which receives corresponding sub-input image data from the plurality of sub-input image data and drives the sub-display panel based on the corresponding sub-input image data. The main processor includes: a data generation unit that senses information about the plurality of sub-display devices included in the display unit and calculates the number of the plurality of sub-display devices. The data generation unit includes: The sensing signal generation unit outputs a first sensing signal to the display unit in a first direction and outputs a second sensing signal in a second direction perpendicular to the first direction; and... The quantity calculation unit feeds back the first sensing signal and the second sensing signal, calculates the voltage drop of the first sensing signal and the second sensing signal as they pass through the plurality of sub-display devices, and thereby calculates the number of the plurality of sub-display devices included in the display unit. Each of the plurality of sub-display devices includes: The pixel data generation unit includes a gate line for transmitting gate signals and a data line for transmitting data signals. It senses information of the plurality of pixels through the gate line and the data line and calculates the number of the plurality of pixels.

2. The display system according to claim 1, characterized in that, The main processor determines the sub-input image data based on the number of sub-display devices.

3. The display system according to claim 1, characterized in that, Each of the plurality of sub-display devices determines the gate signal and the data signal based on the number of pixels.

4. The display system according to claim 1, characterized in that, The pixel data generation unit outputs a first pixel sensing signal to the gate line, feeds back the first pixel sensing signal, calculates the voltage drop of the first pixel sensing signal, and thereby calculates the number of pixels in the first direction of the sub-display panel.

5. The display system according to claim 1, characterized in that, The pixel data generation unit outputs a second pixel sensing signal to the data line, feeds back the second pixel sensing signal, calculates the voltage drop of the second pixel sensing signal, and thereby calculates the number of pixels in the second direction of the sub-display panel.

6. The display system according to claim 1, characterized in that, The sub-display panel has a shape that is not rectangular.

7. The display system according to claim 1, characterized in that, At least one of the sub-display panels has a shape different from any of the sub-display panels.

8. A driving method for a display system, characterized in that, The driving method of the display system includes: A step of sensing information of multiple sub-display devices arranged in a first direction and a second direction in a display unit; The step of calculating the number of the plurality of sub-display devices; The step of segmenting the source image data into multiple sub-input image data corresponding to each of the multiple sub-display devices; and The step of providing the corresponding plurality of sub-input image data to each of the plurality of sub-display devices. Each of the plurality of sub-display devices includes: a sub-display panel including a plurality of pixels; and a panel driving unit that receives the corresponding sub-input image data and drives the sub-display panel based on the corresponding sub-input image data. The steps of sensing information from the plurality of sub-display devices include: The steps of outputting a first sensing signal to the display unit in a first direction and outputting a second sensing signal in a second direction perpendicular to the first direction. The steps for calculating the number of the plurality of sub-display devices include: The steps include feeding back the first sensing signal and the second sensing signal, and calculating the voltage drop of the first sensing signal and the second sensing signal after passing through the plurality of sub-display devices. Each of the plurality of sub-display devices includes: The pixel data generation unit includes a gate line for transmitting gate signals and a data line for transmitting data signals. It senses information of the plurality of pixels through the gate line and the data line and calculates the number of the plurality of pixels.

9. The driving method for the display system according to claim 8, characterized in that, The driver of the display system also includes: The step of determining the sub-input image data based on the number of sub-display devices.

Images