Display device including image corrector

Abstract

A display device including an image corrector is provided, the display device including: a frame data counter configured to count frame information of an image displayed in a display area; a speed controller configured to determine a moving speed of the image; and a scene determiner configured to determine a moving direction and a moving amount of the image.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0091941 filed on July 29, 2019, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0002] Aspects of some example embodiments of the present invention are directed to a display device including an image corrector. Background Art

[0003] Recently, various display devices such as an organic light emitting display device, a liquid crystal display device, a plasma display device, etc. are widely used.

[0004] Because such a display device continuously outputs a specific or fixed image or text for a long period of time, pixels displaying the image or text may degrade and result in reduced performance.

[0005] To reduce the above-mentioned problem, a technique for displaying an image on a display panel and shifting the image according to a set or predetermined period (so-called pixel shifting technique) can be used. When an image is displayed on a display panel and shifted according to a set predetermined period, it is possible to prevent or reduce degradation of a specific pixel by preventing or reducing the output of the same data to the specific pixel for a long time.

[0006] Furthermore, the power consumption of a display device can be reduced by making various changes to its driving method. One method for reducing power consumption is to use a low-speed driving method that reduces the frequency used to drive the display device to a level lower than the base driving frequency. Another method is to divide the display device into multiple areas and drive each area at different frequencies.

[0007] The above information disclosed in this Background section is only for enhancement of understanding of the background technology and therefore, the information discussed in this Background section does not necessarily constitute prior art. Summary of the Invention

[0008] Aspects of some example embodiments of the present invention relate to a display device including an image corrector, for example, to an image corrector for providing a function of moving an image and a display device for moving the image and displaying the image.

[0009] Some example embodiments of the present invention include a display device in which an image moves in the same manner in a plurality of display areas driven at different frequencies.

[0010] The features of the present invention are not limited to the features mentioned above, and other technical features not mentioned can be clearly understood by those of ordinary skill in the art using the following description.

[0011] A display device according to some example embodiments of the present invention includes: a frame data counter that calculates frame information of an image displayed in a display area; a speed controller that determines a moving speed of the image; and a scene determiner that determines a moving direction and an amount of movement of the image.

[0012] According to some example embodiments, the display area may include a first display area for driving an image using a first scan signal of a first frequency and a second display area for driving an image using a second scan signal of a second frequency lower than the first frequency.

[0013] According to some example embodiments, the first frequency may be 60 Hz to 250 Hz, and the second frequency may be 1 Hz to 30 Hz.

[0014] According to some example embodiments, the second scan signal may be generated by applying a scan-off signal that turns off the scan-on signal of a specific frame from the signal of the first frequency.

[0015] According to some example embodiments, the scan cutoff signal may be generated by scan cutoff frame information and scan cutoff frequency information, and the frame data counter may receive the scan cutoff frame information, the scan cutoff frequency information, and a vertical synchronization signal from the outside.

[0016] According to some example embodiments, the display device may further include a scan-off position controller that determines a moving direction and a moving amount of the scan-off signal according to a moving direction and a moving amount of the image.

[0017] According to some example embodiments, the speed controller may be configured to count frames of the image displayed in the first display area and count frames of the image displayed in the second display area.

[0018] According to some example embodiments, a speed of counting frames of an image displayed in the second display area may be determined by: frame speed of an image displayed in the first display area×(first frequency / second frequency).

[0019] According to some example embodiments, the display area may further include a third display area for driving an image using a third scanning signal having a third frequency lower than the second frequency, and a speed for counting frames of an image displayed in the third display area may be determined by the following formula: frame speed of the image displayed in the first display area × (first frequency / third frequency).

[0020] According to some example embodiments, a moving speed of the image in the first display area may be the same as a moving speed of the image in the second display area.

[0021] According to some example embodiments, the display device may further include a zoom adjuster that divides the image into a plurality of regions according to a movement direction, determines a first region of the plurality of regions as a reduction region, and determines a second region of the plurality of regions as an expansion region.

[0022] According to some example embodiments, the zoom adjuster may zoom out the image in the first area and zoom in the image in the second area.

[0023] According to some example embodiments of the present invention, a display device in which a display area is defined and an image moves in the display area includes: a display panel including a plurality of pixels; a driver including a timing controller for controlling the display panel; and an image corrector providing image data to the timing controller, wherein the image corrector determines a moving speed, a moving direction, and a moving amount of the image.

[0024] According to some example embodiments, the plurality of pixels may include a first pixel and a second pixel adjacent to each other, and the image corrector may move the image by reducing the luminous amount of a specific ratio of the first pixel in units of frames and increasing the luminous amount of the specific ratio of the second pixel in units of frames.

[0025] According to some example embodiments, the specific ratio may be 1 / 32 of the light emission amount of the previous frame.

[0026] According to some example embodiments, the display area may include a first display area in which an image is driven using a first scan signal of a first frequency and a second display area in which the image is driven using a second scan signal of a second frequency lower than the first frequency, and a speed at which the image moves in the first display area may be the same as a speed at which the image moves in the second display area.

[0027] According to some example embodiments, the display apparatus may be bent with respect to a bending axis.

[0028] According to some example embodiments, the bending axis may span the display area, and the first display area and the second display area may be divided by the bending axis.

[0029] According to some example embodiments, the movement speed may be calculated by counting frames of an image displayed in a display area, the display area may include a plurality of areas driven at different frequencies, the movement speed may be calculated by counting frames of images displayed in the plurality of areas, and the speed of counting frames of the image in each of the plurality of areas may be different from each other.

[0030] According to some example embodiments, a speed of counting frames in a target display area among the multiple areas is determined by the following formula: frame counting speed in the display area driven at the highest frequency × (driving frequency in the display area driven at the highest frequency / driving frequency in the target display area).

[0031] Details of other embodiments are included in the detailed description and accompanying drawings.

[0032] According to some example embodiments of the present invention, there is provided a display device in which an image moves at the same speed in a plurality of display areas driven at different frequencies.

[0033] Therefore, the display device can reduce power consumption and minimize visual degradation of pixels.

[0034] The effects of the exemplary embodiments of the present invention are not limited to the above description, and more various effects are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 are perspective views of display devices according to some example embodiments of the present invention.

[0036] Figure 2 and Figure 3 It shows Figure 1 A perspective view showing a folded state of the display device.

[0037] Figure 4 is a schematic block diagram of a display device according to some example embodiments of the present invention.

[0038] Figure 5 is a schematic block diagram of an image corrector according to some example embodiments of the present invention.

[0039] Figure 6 3 is a diagram illustrating a concept of converting a high-frequency signal into a low-frequency signal.

[0040] Figure 7 is a diagram illustrating the concept of image movement between adjacent pixels.

[0041] Figure 8 is a diagram illustrating a concept for speed control of image movement in display areas driven at different frequencies.

[0042] Figure 9 and Figure 10 is a conceptual diagram illustrating image movement in a reverse direction of an X-axis direction of a display device according to some example embodiments of the present invention.

[0043] Figure 11is a conceptual diagram illustrating a method of generating image data shifted in a reverse direction along an X-axis direction by an image corrector according to some example embodiments of the present invention.

[0044] Figure 12 is a top view of a display device according to some example embodiments of the present invention.

[0045] Figure 13 It is shown in Figure 12 A diagram illustrating the concept of converting a high-frequency signal into a low-frequency signal in a display device.

[0046] Figure 14 is shown for the Figure 12 A diagram illustrating a concept of controlling the speed of image movement in a display area driven at different frequencies in a display device. DETAILED DESCRIPTION

[0047] The aspects and features of the present invention and their implementation methods will be illustrated by the following embodiments described with reference to the accompanying drawings. However, the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and these embodiments will fully convey the scope of the present invention to those skilled in the art. Furthermore, the present invention is limited only by the scope of the claims.

[0048] Although the terms "first," "second," and the like are used to describe various constituent elements, these constituent elements are not limited by these terms. These terms are merely used to distinguish one constituent element from another constituent element. Therefore, within the technical spirit of the present invention, the first constituent element described below may be the second constituent element. When the singular is interpreted, it may be interpreted as having a plural meaning unless explicitly described otherwise.

[0049] In this specification, the term “identical” may be used not only when actual comparison objects are completely identical without error but also when actual comparison objects are similar within a 5% error range to be regarded as identical.

[0050] Hereinafter, with reference to the accompanying drawings, aspects of some exemplary embodiments of the present disclosure will be described in further detail. The same or similar reference numerals are used for the same constituent elements in the drawings.

[0051] Figure 1 are perspective views of display devices according to some example embodiments of the present invention. Figure 2 and Figure 3 It shows Figure 1 A perspective view showing a folded state of the display device.

[0052] Reference Figures 1 to 3According to some example embodiments of the present invention, a display device 1 includes a display surface IS for displaying an image. The display surface IS on which the image IM is displayed is parallel to a surface defined by a first direction DR1 and a second direction DR2. A third direction DR3 represents a normal direction of the display surface IS, that is, a thickness direction of the display device 1.

[0053] In this specification, for better understanding and ease of description, the vertical direction of the display device 1 is defined as the first direction DR1, and the direction intersecting the first direction DR1 is defined as the second direction DR2. That is, the second direction DR2 can indicate the horizontal direction of the display device 1. The thickness direction of the display device 1 (i.e., the direction intersecting both the first direction DR1 and the second direction DR2) is defined as the third direction DR3. However, example embodiments are not limited to the above directions, and it should be understood that the first direction DR1, the second direction DR2, and the third direction DR3 refer to relative directions intersecting each other. In addition, the first direction DR1, the second direction DR2, and the third direction DR3 can define the X-axis, the Y-axis, and the Z-axis, respectively, and can also be referred to as the X-axis direction, the Y-axis direction, and the Z-axis direction.

[0054] According to some example embodiments, the display device 1 may be bent. For example, the display device 1 may be a foldable display device or a rollable display device. However, example embodiments are not limited thereto, and a rigid display device may be applied.

[0055] According to some example embodiments, the display device 1 may be used as a large electronic device such as a television, a monitor, etc. or a small electronic device such as a portable phone, a tablet computer, a car navigation device, a gaming device, a smart watch, etc.

[0056] According to some example embodiments, the display surface IS of the display device 1 may include a plurality of areas. The display surface IS of the display device 1 may include a display area DA on which an image IM is displayed and a non-display area NDA adjacent to the display area DA. The non-display area NDA may be an area where no image is displayed. Figure 1 and Figure 3 A state in which a video playback application is executed on the display device 1 is shown as an example of the image IM.

[0057] The display area DA may be a quadrilateral. The non-display area NDA may be a shape surrounding the display area DA. However, the present invention is not limited thereto, and the shapes of the display area DA and the non-display area NDA may be relatively changed.

[0058] According to some example embodiments, the display device 1 may include a housing. The housing may be located outside the display device 1 and may accommodate components in the housing.

[0059] According to some example embodiments, the display device 1 may be bent with respect to a bending axis BX. For example, the bending axis BX may span the display area DA.

[0060] like Figure 2 As shown in FIG, the display device 1 may be in the inwardly folded state 1a. When the display device 1 according to some example embodiments of the present invention is folded inwardly relative to the bending axis BX, the display surface IS of the display device 1 may be folded relative to the bending axis BX, the display surfaces IS of the display device 1 divided by the bending axis BX may be folded to face each other, and a back surface opposite to the display surface IS may be exposed to the outside.

[0061] like Figure 3 As shown in FIG, the display device 1 according to some example embodiments of the present invention may be in an outwardly folded state 1b. When the display device 1 according to some example embodiments of the present invention is outwardly folded relative to the bending axis BX, the display surface IS of the display device 1 may be exposed to the outside, the back surface opposite to the display surface IS may be folded relative to the bending axis BX, and both sides of the back surface divided by the bending axis BX may be folded to face each other.

[0062] In addition to being folded inward or outward with respect to the bending axis BX, the display device 1 can also be folded or rolled in various ways.

[0063] Meanwhile, the display area DA of the display device 1 may include a plurality of areas driven at different frequencies. According to some example embodiments, the display device 1 may include a first display area DA1 and a second display area DA2 divided relative to a bending axis BX. According to some example embodiments, the first display area DA1 and the second display area DA2 may contact each other with the bending axis BX interposed therebetween.

[0064] When the display device 1 is in the external folded state, the second display area DA2 may not be visible due to the position at which the user is looking at the display device 1. In this case, the second display area DA2 may be driven at a lower frequency than the first display area DA1. Therefore, the display device 1 can reduce power consumption compared to when both the first display area DA1 and the second display area DA2 are driven at the same frequency as the first display area DA1.

[0065] For example, the first display area DA1 may be driven at a first frequency of 60 Hz to 250 Hz, and the second display area DA2 may be driven at a second frequency of 1 Hz to 30 Hz. According to some example embodiments, only the first display area DA1 may be driven while the second display area DA2 turns off the image IM.

[0066] Figure 4 is a schematic block diagram of a display device according to some example embodiments of the present invention.

[0067] Reference Figure 4 , a display device 1 according to some example embodiments of the present invention may include a processor 100 , a display driver 200 , and a display panel 300 .

[0068] The display panel 300 may include pixels PX that display an image (e.g., a set image or a predetermined image). Each pixel PX may define a light-emitting area that emits light of a color (e.g., a set color or a predetermined color). For example, a plurality of pixels PX may define a plurality of light-emitting areas that emit red light, green light, and blue light. The display area DA may include a plurality of light-emitting areas and a non-light-emitting area that divides each of the light-emitting areas. According to some example embodiments, the pixels PX may be arranged in a matrix form or a matrix structure in the row direction and the column direction. Similarly, the plurality of light-emitting areas defined by the pixels PX may be arranged in a matrix form or a matrix structure in the row direction and the column direction, and the position of each pixel PX may correspond to the position of each light-emitting area.

[0069] The processor 100 may supply the first image data DI1 and the control signal CS to the display driver 200. For example, the control signal CS may include a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, a clock signal, etc. According to some example embodiments, the processor 100 may also supply scanning cutoff frame information SOFM and scanning cutoff frequency information SOFQ to the display driver 200.

[0070] For example, the processor 100 may be implemented as a processor capable of controlling operations of an integrated circuit (IC), an application processor (AP), a mobile AP, or the display driver 200 .

[0071] The display driver 200 may include an image corrector 210 , a timing controller 220 , a scan driver 240 , and a data driver 230 .

[0072] The image corrector 210 may generate the second image data DI2 using the first image data DI1 and the control signal CS supplied from the processor 100. In addition, the image corrector 210 may transmit the first image data DI1, the second image data DI2, and the control signal CS to the timing controller 220. Here, the second image data DI2 refers to image data obtained by shifting the first image data DI1 using an image shift (pixel shift) technique.

[0073] According to some example embodiments, the image corrector 210 may directly supply the first image data DI1 , the second image data DI2 , and the control signal CS to the data driver 230 without using the timing controller 220 .

[0074] According to some example embodiments, the image corrector 210 may be located separately from the display driver 200 .

[0075] According to some example embodiments, the image corrector 210 may be integrated into the timing controller 220 , and the timing controller 220 may convert the first image data DI1 into the second image data DI2 .

[0076] The timing controller 220 may receive the first image data DI1 , the second image data DI2 , and the control signal CS from the image corrector 210 .

[0077] The timing controller 220 may generate timing control signals for controlling the scan driver 240 and the data driver 230 based on the control signal CS.

[0078] For example, the timing control signals may include a scan timing control signal SCS for controlling the scan driver 240 and a data timing control signal DCS for controlling the data driver 230. The timing controller 220 may supply the scan timing control signal SCS to the scan driver 240 and the data timing control signal DCS to the data driver 230.

[0079] The timing controller 220 may display a first image by supplying the first image data DI1 to the data driver 230 during a first period, and display a second image by supplying the second image data DI2 to the data driver 230 during a second period.

[0080] The data driver 230 may generate the data signal DS by receiving the data timing control signal DCS and the first and second image data DI1 and DI2 from the timing controller 220 .

[0081] In addition, the data driver 230 may supply the generated data signal DS to the data line.

[0082] The data driver 230 may be electrically connected to the data lines located in the display panel 300 through separate constituent elements.

[0083] According to some example embodiments, the data driver 230 may be directly mounted on the display panel 300 .

[0084] The scan driver 240 supplies a scan signal SS to the scan line in response to a scan timing control signal SCS. The scan driver 240 may be electrically connected to the scan lines located in the display panel 300. The pixel circuit constituting each pixel PX may be connected to at least one scan line and at least one data line. According to some example embodiments, the scan driver 240 may supply a first scan signal SS1 having a first frequency to the pixels PX located in the first display area DA1, and may supply a second scan signal SS2 having a second frequency to the pixels PX located in the second display area DA2.

[0085] According to some example embodiments, the scan driver 240 may be directly mounted on the display panel 300 .

[0086] The pixels PX of the display panel 300 receiving the data signal DS through the data line may emit light having brightness corresponding to the data signal DS when the scan signal SS is supplied.

[0087] For example, when the timing controller 220 or the image corrector 210 supplies the first image data DI1 , the data driver 230 may display the first image by supplying the data signal DS corresponding to the first image data DI1 to the pixel PX.

[0088] In addition, when the timing controller 220 or the image corrector 210 supplies the second image data DI2, the data driver 230 may display the second image by supplying the data signal DS corresponding to the second image data DI2 to the pixel PX.

[0089] The data driver 230 may be located separately from the scan driver 240 .

[0090] The display panel 300 may display an image according to the control of the display driver 200 supplying a scan signal SS and a data signal DS.

[0091] For example, the display panel 300 may be implemented as an organic light emitting display panel, a liquid crystal display panel, a plasma display panel, etc., but is not limited thereto.

[0092] Figure 5 is a schematic block diagram of an image corrector according to some example embodiments of the present invention. Figure 6 3 is a diagram illustrating a concept of converting a high-frequency signal into a low-frequency signal. Figure 7 is a diagram illustrating the concept of image movement between adjacent pixels. Figure 8 is a diagram illustrating a concept for speed control of image movement in display areas driven at different frequencies. Figure 9 and Figure 10 is a conceptual diagram illustrating image movement in an X-axis direction of a display device according to some example embodiments of the present invention.

[0093] Reference Figure 5 The image corrector 210 may include a frame data counter 211 , a speed controller 212 , a scene determiner 213 , a zoom adjuster 214 , and a scan cutoff position controller 215 .

[0094] The frame data counter 211 may count frame information of the image IM provided to the display area DA. At this time, the frame data counter 211 may count how many frames the currently supplied first image data DI1 corresponds to by using a control signal CS such as a vertical synchronization signal supplied from the processor 100.

[0095] Because the display device 1 is driven at first and second frequencies different from each other in the first and second display areas DA1 and DA2 , respectively, the frame information of the first and second display areas DA1 and DA2 calculated by the frame data counter 211 may be configured separately.

[0096] On the other hand, the second scan signal SS2 having a relatively low frequency may be generated using a signal having the same frame and frequency as the first scan signal SS1. Hereinafter, the first frequency is described as 60 Hz and the second frequency is described as 30 Hz, but the frequencies are not limited thereto.

[0097] For example, refer to Figure 6 The scan-off signal SO can be used to convert the first scan signal SS1 into the second scan signal SS2. The scan-off signal SO includes scan-off frame information SOFM and scan-off frequency information SOFQ.

[0098] exist Figure 6 , it is assumed that a frame having a high logic level is a scan-on frame, and a frame having a low logic level is a scan-off frame.

[0099] The second scan signal SS2 can be generated by applying the scan-off signal SO during some periods of the first scan signal SS1 having a relatively high frequency. Applying the scan-off signal SO can mean turning off a specific scan-on frame of the scan signal. For example, the scan-off signal SO that turns off even-numbered scan-on frames can be applied to the 60 Hz first scan signal SS1 to generate the 30 Hz second scan signal SS2. The scan-off signal SO can be generated based on the scan-off frame information SOFM and the scan-off frequency information SOFQ described above.

[0100] The frame data counter 211 may store a position of a scan-on frame that is turned off to generate the second scan signal SS2 by the supplied scan-off frame information SOFM and scan-off frequency information SOFQ.

[0101] In addition, the frame data counter 211 can calculate the first frame information FI1 through the vertical synchronization signal, and can provide the calculated first frame information FI1 to the speed controller 212, the first frame information FI1 including the frame information of the first display area DA1 provided with the first scan signal SS1 and the frame information of the second display area DA2 provided with the second scan signal SS2.

[0102] The speed controller 212 may receive the first frame information FI1 to control a moving speed of the image IM of each of the display areas DA1 and DA2 driven at different frequencies.

[0103] Refer to it together Figure 7 According to some example embodiments, image shifting may be performed by controlling the amount of light emitted between adjacent pixels PX. Figure 7 The intermediate image IM moves from the adjacent first pixel PX1 to the second pixel PX2.

[0104] According to some example embodiments, image shifting may be performed by reducing the luminous amount of the first pixel PX1 by a ratio (e.g., a set ratio or a predetermined ratio) and increasing the luminous amount of the second pixel PX2 by a ratio (e.g., a set ratio or a predetermined ratio). For example, when the first pixel PX1 has an initial luminous amount of a ratio of 1 (i.e., 32 / 32) and the second pixel PX2 has an initial luminous amount of a ratio of 0 (i.e., 0 / 32), the luminous amount of the first pixel PX1 may be reduced by 1 / 32 per frame, and the luminous amount of the second pixel PX2 may be increased by 1 / 32 per frame. With respect to each initial luminous amount during the first frame, the first pixel PX1 may have a luminous amount of 31 / 32 (see PX1_1), and the second pixel PX2 may have a luminous amount of 1 / 32 (see PX2_1). As the 32nd frame passes, with respect to each initial light emission amount, the first pixel PX1 may have a light emission amount of 0 (i.e., 0 / 32) (see PX1_32), and the second pixel PX2 may have a light emission amount of 1 (i.e., 32 / 32) (see PX2_32). Therefore, the image IM displayed by the first pixel PX1 may be transferred to the second pixel PX2.

[0105] On the other hand, assuming that there is no separate device for controlling the image movement speed, the time taken to complete the image movement from the first pixel PX1 to the second pixel PX2 when driven at the second frequency (e.g., 30 Hz) may be twice as long as the time taken when driven at the first frequency (e.g., 60 Hz). In other words, the image movement of each pixel PX in the first display area DA1 and the second display area DA2 may be completed at different times, causing the user to see separate screens.

[0106] The display device 1 of the present invention may include the speed controller 212 so that the time to complete the image movement of all the display areas DA1 and DA2 is the same even in the case where the plurality of display areas DA are driven at different frequencies.

[0107] The speed controller 212 may adjust the moving speed of the image IM of each of the display areas DA1 and DA2 by counting frames of the image IM. The frames of the image IM may be determined with respect to the scan signal SS supplied to the pixels PX of each of the display areas DA1 and DA2.

[0108] Refer to it together Figure 8 , when the scan-on frame is numbered '1' and the scan-off frame is numbered '0' in the scan signal, the first scan signal SS1 applied to the pixels PX of the first display area DA1 may be numbered "101010101010..." in the frame sequence. This is referred to as the first frame count FR1. The second scan signal SS2 applied to the pixels PX of the second display area DA2 may be numbered "100010001000..." in the frame sequence. The second scan signal SS2 corresponds to the first scan signal SS1. This is referred to as the second frame count FR2.

[0109] The speed controller 212 can increase the speed of frame counting in the target display area (e.g., DA2) driven at a lower frequency relative to the scanning signal (e.g., SS1) of the display area (e.g., DA1) driven at the highest frequency. That is, the following [Equation 1] can be applied to the speed of frame counting in the target display area.

[0110] [Equation 1]:

[0111] Speed ​​of frame counting in target display area = Speed ​​of frame counting in display area driven at the highest frequency × (driving frequency in display area driven at the highest frequency / driving frequency in target display area)

[0112] For example, assuming that the first display area DA1 driven at 60 Hz is the display area driven at the highest frequency and the speed of frame counting in the first display area DA1 is 1 (ratio) (see CNT1), then the speed of frame counting in the second display area DA2 driven at 30 Hz can be 2 (ratio) (see CNT2).

[0113] The first frame count FR1 (101010101010 ...) may be counted at a rate of 1 (ratio) per frame (see CNT1), and the second frame count FR2 (100010001000 ...) may be counted at a rate of 2 (ratio) per frame (see CNT2). Therefore, the period Ts during which each count number becomes '1' may be the same in the first frame count FR1 and the second frame count FR2.

[0114] When the numbers of the frame counts FR1 and FR2 of the scanning signals SS1 and SS2 become '1', respectively, image shifting can be performed in the first display area DA1 and the second display area DA2, and image shifting can be performed simultaneously in each of the display areas DA1 and DA2 (see SFT1, SFT2). That is, adjacent pixels (for example, Figure 7 The light emission amount of each of the first display area DA1 and the second display area DA2 (see SFT1 and SFT2) is adjusted by a ratio (e.g., a set ratio or a predetermined ratio) between PX1 and PX2) in the display area (e.g., a ratio of 1 / 32 of the initial light emission amount).

[0115] The speed controller 212 may calculate second frame information FI2 including frame information of each of the display areas DA1 and DA2 and the speed of the frame counts FR1 and FR2 , and may provide the calculated second frame information FI2 to the scene determiner 213 .

[0116] The scene determiner 213 may determine the movement direction and movement amount of the image IM. In more detail, the scene determiner 213 may determine the X-axis movement direction, the X-axis movement amount, the Y-axis movement direction, and the Y-axis movement amount.

[0117] The scene determiner 213 may generate image movement direction information MDI including information about the determined movement direction of the image IM. In addition, the scene determiner 213 may generate image movement amount information MAI including information about the determined movement amount of the image IM. In addition, the scene determiner 213 may generate image movement mode information MPI including information about the determined movement mode of the image IM.

[0118] For example, the scene determiner 213 may determine an X-axis movement direction, a Y-axis movement direction, an X-axis movement amount, a Y-axis movement amount, and a movement mode corresponding to the second frame information FI2 through the second frame information FI2.

[0119] According to some example embodiments, the scene determiner 213 may generate a lookup table including information about the movement direction, movement amount, and movement pattern of the image IM, and may determine the movement direction, movement amount, and movement pattern of the image IM by using the generated lookup table.

[0120] According to some example embodiments, the scene determiner 213 may determine the movement direction, movement amount, and movement pattern of the image IM by using a lookup table transmitted from the outside or a pre-stored lookup table.

[0121] The scene determiner 213 may determine an X-axis region by using the image movement direction information MDI, the image movement amount information MAI, and the image movement mode information MPI in the X-axis direction, and may generate X-axis region information about the determined X-axis region. The X-axis region may include an X-axis reduction region, an X-axis expansion region, and an X-axis movement region.

[0122] The scene determiner 213 may determine a Y-axis region by using the image movement direction information MDI, the image movement amount information MAI, and the image movement mode information MPI in the Y-axis direction, and may generate Y-axis region information about the determined Y-axis region. The Y-axis region may include a Y-axis reduction region, a Y-axis expansion region, and a Y-axis movement region.

[0123] The zoom adjuster 214 can adjust the zoom in the edge portion of the display area DA by using the image movement direction information MDI, the image movement amount information MAI, and the image movement mode information MPI. This will be referred to later. Figures 9 to 11 describe.

[0124] The scan cutoff position controller 215 can adjust the position of the scan cutoff signal SO (i.e., control the direction and amount of movement of the scan cutoff signal SO) by utilizing the image movement direction information MDI, the image movement amount information MAI, the image movement mode information MPI, and the magnification / reduction information. By simultaneously moving the image IM in the display area DA and adjusting the position of the scan cutoff signal SO, the first display area DA1 and the second display area DA2 can be driven at a certain frequency (e.g., a set or predetermined frequency). The scan cutoff position controller 215 can adjust the position of the scan cutoff signal SO and generate the second image data DI2.

[0125] Hereinafter, the movement of the image IM will be described. The movement of the image IM in the X-axis direction will be described as an example. However, the following description can also be applied to an example embodiment of movement in the Y-axis direction.

[0126] Figure 9 and Figure 10 is a conceptual diagram illustrating image movement in a reverse direction of an X-axis direction of a display device according to some example embodiments of the present invention.

[0127] Reference Figure 9 and Figure 10, the display device 1 can display the image IM in the display area DA for several frame periods. Here, the size of the image IM can be set to be equal to or smaller than the size of the display area DA.

[0128] The image IM may include a plurality of areas. Specifically, the image IM may include a first area A1, a second area A2, and a third area A3. According to some example embodiments, the first area A1 may be formed over a portion of the first display area DA1 (or in the first display area DA1), the second area A2 may be formed over a portion of the second display area DA2 (or in the second display area DA2), and the third area A3 may be formed over both the first display area DA1 and the second display area DA2 (or in both the first display area DA1 and the second display area DA2).

[0129] The first area A1, the third area A3, and the second area A2 may be sequentially arranged along the X-axis direction. In other words, when determining the order along the X-axis direction, the third area A3 may be an area located between the first area A1 and the second area A2. Figure 9 and Figure 10 At the moment, the first area A1 may be an area located on the left side of the third area A3, and the second area A2 may be an area located on the right side of the third area A3.

[0130] exist Figure 9 and Figure 10 At the moment of , the X-axis direction may be defined as the direction indicated by any straight line extending from left to right. According to some example embodiments, the X-axis direction may be defined as the direction in which the rows of each pixel PX located in the display area DA increase. Therefore, the Y-axis direction may be defined as the direction in which the rows of each pixel PX located in the display area DA increase. Figure 9 and Figure 10 The direction indicated by any straight line extending from top to bottom at the moment. According to some example embodiments, the Y-axis direction may be defined as a direction in which the columns of each pixel PX located in the display area DA increase. Example embodiments are not limited to the terms X-axis direction and Y-axis direction.

[0131] Figure 9 schematically shows an image IM displayed in the display area DA during a first frame period, Figure 10 The image IM displayed in the display area DA during the second frame period is schematically shown. The first frame period and the second frame period are referred to as frames for completing image movement. The second frame period may be continuous with the first frame period.

[0132] The image IM displayed during the first frame period can be displayed in the second frame period in a form shifted in the opposite direction along the X-axis direction. In other words, the first area A1, the second area A2, and the third area A3 of the image IM displayed during the first frame period can be displayed in the second frame period in a form in which some areas are deformed.

[0133] For example, compared to the first frame period, the first area A1 may be reduced in the opposite direction of the X-axis direction in the second frame period, and compared to the first frame period, the second area A2 may be expanded in the opposite direction of the X-axis direction in the second frame period. Compared to the first frame period, the third area A3 may be moved in the opposite direction of the X-axis direction in the second frame period. However, the entire area of ​​the first area A1, the second area A2, and the third area A3 may remain the same in the first frame period and the second frame period.

[0134] In this way, by expanding, reducing, and moving the image IM for each region, the generation of an afterimage can be suppressed, and the degradation of the display device 1 can be minimized.

[0135] Figure 9 and Figure 10 The example embodiment shown in FIG shows movement in the opposite direction along the X-axis direction, but movement along the X-axis direction is also possible. In this case, the first area A1 can be expanded along the X-axis direction, the second area A2 can be reduced along the X-axis direction, and the third area A3 can be moved along the X-axis direction.

[0136] Figure 11 is a conceptual diagram illustrating a method of generating image data shifted in a reverse direction along an X-axis direction by an image corrector according to some example embodiments of the present invention.

[0137] Figure 11 The first X-axis image data XID1 and the second X-axis image data XID2 associated with a row of pixels PX among the pixels PX positioned in a matrix form are shown for better understanding and ease of description. Here, the first X-axis image data XID1 may correspond to a portion of the first image data DI1, and the second X-axis image data XID2 may correspond to a portion of the second image data DI2.

[0138] The X-axis region XA1 before the movement may include regions SA1, SA2, and SA3 before the movement. In addition, the X-axis region XA2 after the movement may include regions SB1, SB2, and SB3 after the movement corresponding to data after the image IM is moved.

[0139] For example, five pixels PX on which the image IM is displayed in the right direction from the leftmost pixel PX may be determined as the first area SA1 before movement, three pixels PX on which the image IM is displayed in the left direction from the rightmost pixel PX may be determined as the second area SA2 before movement, and the pixels PX on which the image IM is displayed between the first area SA1 before movement and the second area SA2 before movement may be determined as the third area SA3 before movement.

[0140] The magnification / reduction adjuster 214 may convert the first X-axis image data XID1 displaying the regions SA1 , SA2 , and SA3 before the movement into the second X-axis image data XID2 to display the regions SB1 , SB2 , and SB3 after the movement.

[0141] For example, the magnification / reduction adjuster 214 may convert the first X-axis image data XID1 displaying the first area SA1 before the movement into the second X-axis image data XID2 to display the first area SB1 after the movement.

[0142] In addition, the magnification / reduction adjuster 214 may convert the first X-axis image data XID1 displaying the second area SA2 before the movement into the second X-axis image data XID2 to display the second area SB2 after the movement.

[0143] In addition, the magnification / reduction adjuster 214 may convert the first X-axis image data XID1 displaying the third area SA3 before the movement into the second X-axis image data XID2 to display the third area SB3 after the movement.

[0144] In the following, the reduction of the image IM will be described in more detail.

[0145] The magnification / reduction adjuster 214 may determine the first area SB1 after the movement to be reduced compared to the first area SA1 before the movement by using the image movement direction information MDI and the image movement amount information MAI generated by the scene determiner 213 .

[0146] For example, when the image movement direction information MDI is set to the opposite direction of the X-axis direction and the image movement amount information MAI is set to a movement of n pixels PX (n is a positive integer), the magnification / reduction adjuster 214 can set the first area SB1 after the movement to be reduced by n pixels PX in the opposite direction of the X-axis direction compared to the first area SA1 before the movement.

[0147] Next, in order to reduce the image IM, the zoom adjuster 214 can convert the image IM displayed on p pixels PX (p is a positive integer) of the first area SA1 before the movement into the image IM displayed on q pixels PX (q is a positive integer less than p) of the first area SB1 after the movement.

[0148] That is, the magnification / reduction regulator 214 may convert data to be provided to p pixels PX into data to be provided to q pixels PX.

[0149] Since the image IM displayed on p pixels PX is displayed on q pixels PX, the image IM displayed in the first area SB1 after the movement can be reduced at a ratio of k (here k=q / p) compared to the image IM displayed in the first area SA1 before the movement to be displayed.

[0150] In the following, the expansion of the image IM will be described in more detail.

[0151] The magnification / reduction adjuster 214 may determine the second area SB2 after the movement to be expanded compared to the second area SA2 before the movement by using the image movement direction information MDI and the image movement amount information MAI generated by the scene determiner 213 .

[0152] For example, when the image movement direction information MDI is set to the opposite direction of the X-axis direction and the image movement amount information MAI is set to a movement of n pixels PX (n is a positive integer), the magnification / reduction adjuster 214 can set the second area SB2 after the movement to be expanded by n pixels PX in the opposite direction of the X-axis direction compared to the second area SA2 before the movement.

[0153] Next, in order to expand the image IM, the zoom adjuster 214 can convert the image IM displayed on r pixels PX (r is a positive integer) of the second area SA2 before movement into the image IM displayed on s pixels PX (s is a positive integer greater than r) of the second area SB2 after movement.

[0154] That is, the scaling regulator 214 may convert data to be provided to r pixels PX into data to be provided to s pixels PX.

[0155] Since the image IM displayed on r pixels PX is displayed on s pixels PX, the image IM displayed in the second area SB2 after the movement can be expanded at a ratio of l (here l=s / r) compared to the image IM displayed in the second area SA2 before the movement to be displayed.

[0156] Hereinafter, the movement of the image IM will be described in more detail.

[0157] The magnification / reduction adjuster 214 may determine the third area SB3 after movement moved in the opposite direction of the X-axis direction compared to the third area SA3 before movement by using the image movement direction information MDI and the image movement amount information MAI generated by the scene determiner 213 .

[0158] For example, when the image movement direction information MDI is set to the opposite direction of the X-axis direction and the image movement amount information MAI is set to a movement of n pixels PX (n is a positive integer), the magnification / reduction adjuster 214 can set the third area SB3 after the movement to be moved n pixels PX in the opposite direction of the X-axis direction compared to the third area SA3 before the movement.

[0159] Next, to move the image IM, the zoom adjuster 214 may convert the position of the image IM displayed on t pixels PX (t is a positive integer) of the third area SA3 before the movement to the position of the image IM displayed on t pixels PX of the third area SB3 after the movement.

[0160] By modifying the above method, a person skilled in the art can apply a method of generating image data moving in the Y-axis direction.

[0161] Next, a display device according to some example embodiments will be described. Figures 1 to 11 The description of the same constituent elements is omitted. Figures 12 to 14 The same or similar reference numerals are used throughout.

[0162] Figure 12 is a top view of a display device according to some example embodiments of the present invention. Figure 13 It is shown in Figure 12 A diagram illustrating the concept of converting a high-frequency signal into a low-frequency signal in a display device. Figure 14 is shown for the Figure 12 A diagram illustrating a concept of controlling the speed of image movement in a display area driven at different frequencies in a display device.

[0163] Reference Figures 12 to 14 , and according to Figure 1 、 Figure 6 and Figure 8 Compared with the display device 1 of some example embodiments of the present invention, the display device 2 according to some example embodiments of the present invention has a difference in that the display area DA further includes a third display area DA3 driven at a lower frequency than the second display area DA2.

[0164] According to some example embodiments, the display device 2 may include a first display area DA1 driven at the highest frequency, a second display area DA2 driven at an intermediate frequency, and a third display area DA3 driven at the lowest frequency. For example, the display device 2 may display a video in the first display area DA1, an image representing text that moves in columns or rows in the second display area DA2, and a static image in the third display area DA3. Hereinafter, the first display area DA1 is driven at a frequency of 60 Hz, the second display area DA2 is driven at a frequency of 30 Hz, and the third display area DA3 is driven at a frequency of 15 Hz, but embodiments are not limited to these frequencies.

[0165] A third scan signal SS3 having a frequency of 15 Hz may be supplied to pixels located in the third display area DA3. The third scan signal SS3 may be generated by applying the scan-off signal SO_1 during some periods of the first scan signal SS1 having the highest frequency. For example, the third scan signal SS3 having a frequency of 15 Hz may be generated by applying the scan-off signal SO_1 that cuts off the 4i-2th frame, the 4i-1th frame, and the 4ith frame (where i is a positive integer) to the first scan signal SS1 having a frequency of 60 Hz.

[0166] Similarly, by applying the scan-off signal SO that turns off the 2i-th frame to the first scan signal SS1, the second scan signal SS2 may have a frequency of 30 Hz.

[0167] Image movement may be simultaneously performed in the first display area DA1 , the second display area DA2 , and the third display area DA3 .

[0168] For example, when the first frame count FR1 of the first scanning signal SS1 applied to the pixels of the first display area DA1 is 101010101010... and the second frame count FR2 of the second scanning signal SS2 applied to the pixels of the second display area DA2 is 100010001000..., the third frame count FR3 of the third scanning signal SS3 applied to the pixels of the third display area DA3 can be 1000000001000...

[0169] The speed controller 212 may increase the speed of frame counting in target display areas (eg, DA2 and DA3) driven at a lower frequency relative to the scan signal (eg, SS1) of the display area (eg, DA1) driven at the highest frequency.

[0170] For example, assuming that the first display area DA1 driven at 60 Hz is the display area DA driven at the highest frequency and the speed of frame counting in the first display area DA1 is 1 (ratio) (see CNT1), then the speed of frame counting in the second display area DA2 driven at 30 Hz may be 2 (ratio) (see CNT2) and the speed of frame counting in the third display area DA3 driven at 15 Hz may be 4 (ratio) (see CNT3).

[0171] The first frame count FR1 (101010101010 ...) may be counted at a rate of 1 (ratio) per frame (see CNT1), the second frame count FR2 (100010001000 ...) may be counted at a rate of 2 (ratio) per frame (see CNT2), and the third frame count FR3 (100000001000 ...) may be counted at a rate of 4 (ratio) per frame (see CNT3). Therefore, the period Ts in which each count number becomes '1' may be the same in the first frame count FR1, the second frame count FR2, and the third frame count FR3.

[0172] When the frame count of the scanning signal becomes '1', the image shift can be performed in the first display area DA1, the second display area DA2, and the third display area DA3, and the image shift can be performed simultaneously in each of the display areas DA1, DA2, and DA3 (see SFT1, SFT2, SFT3). That is, the adjacent pixels (for example, Figure 7 The luminous amount of each of the first display area DA1, the second display area DA2, and the third display area DA3 (see SFT1, SFT2, SFT3) is adjusted by a ratio (e.g., a set ratio or a predetermined ratio) between PX1 and PX2) in the display area (e.g., a ratio of 1 / 32 of the initial luminous amount).

[0173] According to some exemplary embodiments described above, the display area DA is driven by being divided into various areas driven at various frequencies. However, the display area DA may switch the frequency of each area to be driven, and the concept of the present invention may be applied to image movement.

[0174] The electronic or electrical devices and / or any other related devices or components according to the embodiments of the present invention described herein can be implemented using any suitable hardware, firmware (e.g., application specific integrated circuits), software, or a combination of software, firmware, and hardware. For example, the various components of these devices can be formed on an integrated circuit (IC) chip or on a separate IC chip. In addition, the various components of these devices can be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on a substrate. In addition, the various components of these devices can be processes or threads that run on one or more processors in one or more computing devices, execute computer program instructions, and interact with other system components for performing the various functions described herein. The computer program instructions are stored in a memory that can be implemented in a computing device using a standard memory device (such as a random access memory (RAM) as an example). The computer program instructions can also be stored in other non-transient computer-readable media (such as a CD-ROM, a flash drive, etc. as an example). In addition, it should be appreciated by those skilled in the art that, without departing from the spirit and scope of the exemplary embodiments of the present invention, the functions of the various computing devices can be combined or integrated into a single computing device, or the functions of a specific computing device can be distributed across one or more other computing devices.

[0175] Although some exemplary embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art will appreciate that the present invention may be implemented in other specific forms without changing the technical concept or essential features. Therefore, the exemplary embodiments described above should be considered in a descriptive sense only and not for purposes of limitation.

Claims

1. A display device, comprising: a frame data counter configured to count frame information of an image displayed in the display area; a speed controller configured to determine a speed at which the image moves; as well as a scene determiner configured to determine a direction and an amount of movement of the image, The display area includes: a first display area for driving an image using a first scanning signal of a first frequency; and a second display area for driving an image using a second scanning signal of a second frequency lower than the first frequency. wherein the speed controller is configured to control a moving speed of an image in each of the first display area and the second display area to be the same as each other based on a speed of a first frame count at the first display area and a speed of a second frame count at the second display area, and Wherein, the speed controller is configured to count frames of the image displayed in the first display area and count frames of the image displayed in the second display area, and determine the speed of counting the frames of the image displayed in the second display area based on the ratio between the first frequency and the second frequency.

2. The display device according to claim 1, wherein The first frequency is 60 Hz to 250 Hz; and The second frequency is 1 Hz to 30 Hz.

3. The display device according to claim 1, wherein The second scanning signal is generated by applying a scanning-off signal that turns off a scanning-on signal in a specific frame of a signal of the first frequency.

4. The display device according to claim 3, wherein The scan cutoff signal is generated by the scan cutoff frame information and the scan cutoff frequency information; and The frame data counter receives the scan cutoff frame information, the scan cutoff frequency information, and a vertical synchronization signal from the outside.

5. The display device according to claim 3, further comprising: The scan cutoff position controller is configured to determine a moving direction and a moving amount of the scan cutoff signal according to the moving direction and the moving amount of the image. The display device according to claim 1 , wherein: The speed of counting the frames of the image displayed in the second display area is determined by the following formula: frame speed of the image displayed in the first display area×(the first frequency / the second frequency).

7. The display device according to claim 6, wherein: The display area further includes a third display area for driving an image using a third scanning signal having a third frequency lower than the second frequency, and The speed of counting frames of the image displayed in the third display area is determined by the following formula: frame speed of the image displayed in the first display area×(the first frequency / the third frequency).

8. The display device according to claim 1, further comprising: The zoom adjuster is configured to divide the image into a plurality of areas according to the moving direction, determine a first area among the plurality of areas as a reduction area, and determine a second area among the plurality of areas as an expansion area.

9. The display device according to claim 8, wherein The zoom adjuster is configured to reduce the image in the first area and to enlarge the image in the second area.

10. A display device in which a display area is defined and an image moves in the display area, the display device comprising: A display panel, the display panel comprising a plurality of pixels; a driver comprising a timing controller configured to control the display panel; as well as an image corrector configured to provide image data to the timing controller, wherein the image corrector is configured to determine the speed, direction and amount of movement of the image, The display area includes a first display area that drives an image using a first scanning signal of a first frequency and a second display area that drives an image using a second scanning signal of a second frequency lower than the first frequency. wherein the image corrector is configured to control a moving speed of an image in each of the first display area and the second display area to be the same as each other based on a speed of a first frame count at the first display area and a speed of a second frame count at the second display area, and The image corrector is configured to count frames of the image displayed in the first display area and count frames of the image displayed in the second display area, and determine a speed of counting the frames of the image displayed in the second display area based on a ratio between the first frequency and the second frequency.

11. The display device according to claim 10, wherein: The plurality of pixels include a first pixel and a second pixel adjacent to each other, and The image corrector is configured to shift an image by reducing a specific ratio of light emission amounts of the first pixels in units of frames and increasing the specific ratio of light emission amounts of the second pixels in units of frames.

12. The display device according to claim 11, wherein The specific ratio is 1 / 32 of the light emission amount of the previous frame.

13. The display device according to claim 10, wherein: The display device is bent relative to a bending axis.

14. The display device according to claim 13, wherein: The bending axis spans the display area, and The first display area and the second display area are divided by the bending axis.

15. The display device according to claim 10, wherein calculating the movement speed by counting frames of the image displayed in the display area, The display area includes a plurality of areas driven at different frequencies, calculating a movement speed by counting frames of images displayed in the plurality of areas, and Speeds of counting frames of the image of each of the plurality of areas are different from each other.

16. The display device according to claim 15, wherein The speed of counting the frames in the target display area among the multiple areas is determined by the following formula: frame counting speed in the display area driven at the highest frequency×(driving frequency in the display area driven at the highest frequency / driving frequency in the target display area).

Images