Display device and data processing method thereof

Abstract

The disclosure relates to a display apparatus and a data processing method thereof. The display apparatus includes a display panel having a pixel shift structure for three-dimensional (3D) implementation, a parallax film disposed on the display panel and including a plurality of lenses, and a bypass circuit configured to output edge image data of an edge region of a two-dimensional (2D) input image in a 2D mode without applying a color map conversion corresponding to the pixel shift structure of the display panel when the edge image data of the edge region of the 2D input image is a clear type.

Description

Technical Field

[0001] This disclosure relates to an apparatus, for example, particularly but not limited to a display apparatus and a data processing method thereof. Background Technology

[0002] Light field three-dimensional (LFD) displays that show 3D images are known as glasses-free devices. LFD devices provide a three-dimensional experience to the user by creating a parallax between the left and right eye images using a parallax film attached to the display panel.

[0003] The descriptions provided in the background section should not be construed as prior art simply because they are mentioned in or associated with that section. The background section may include information describing one or more aspects of the subject matter, and the descriptions in that section do not limit this disclosure. Summary of the Invention

[0004] The inventors of this disclosure have recognized that, since such a display device includes a pixel structure optimized for 3D implementation, the sharpness of a 2D image may be reduced when displaying a 2D image.

[0005] In order to overcome the above-mentioned problems of the prior art, this disclosure provides a display device and a data processing method thereof, which can solve the problem of reduced sharpness when displaying two-dimensional (2D) images on a display panel including a pixel structure for three-dimensional (3D) implementation.

[0006] To achieve these and other advantages and in accordance with the purposes of this disclosure, as implemented and broadly described herein, a display device includes: a display panel having a pixel offset structure for three-dimensional (3D) implementation; a parallax film disposed on the display panel and including a plurality of lenses; and a bypass circuit configured to output the edge image data of the sharp type in a 2D mode in a sharp type when the edge image data of the edge region of the two-dimensional (2D) input image is of the sharp type, without applying a colorimetric conversion corresponding to the pixel offset structure of the display panel.

[0007] Furthermore, according to embodiments of this disclosure, a data processing method for a display device is provided. The display device includes a display panel and a parallax film. The display panel has a pixel offset structure for three-dimensional (3D) implementation. The parallax film is disposed on the display panel and includes a plurality of lenses. The data processing method may include: when the edge image data of the edge region of the input image is of the sharp type, outputting the sharp edge image data without applying a colorimetric conversion corresponding to the pixel offset structure of the display panel.

[0008] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed inventive concept. Attached Figure Description

[0009] The accompanying drawings, which are included and incorporated in and form part of this application to provide a further understanding of this disclosure, illustrate embodiments of the disclosure and serve to explain the principles of the disclosure together with the specification. In the drawings:

[0010] Figure 1 This is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure;

[0011] Figure 2 This is a diagram illustrating an example of an implementation of a parallax film bonded to a display panel;

[0012] Figure 3 This diagram illustrates the alignment relationship between the parallax film and the display panel with a pixel offset structure.

[0013] Figure 4 This is a functional block diagram illustrating a display device according to an embodiment of the present disclosure;

[0014] Figure 5 This is a diagram showing the configuration of the data processing circuitry of a display device according to an embodiment of the present disclosure;

[0015] Figure 6 This is a diagram illustrating the operation of the data processing circuit;

[0016] Figure 7 This is a diagram showing an example of the result after applying a sharp-type subpixel rendering technique;

[0017] Figure 8 and Figure 9 This is a diagram illustrating a subpixel rendering operation for anti-aliasing according to an embodiment of the present disclosure;

[0018] Figure 10 This is a diagram illustrating the application of colormap transformation to non-sharp edge image data; and

[0019] Figure 11 This is a diagram illustrating the case where no colormap conversion is applied to sharp-type edge image data. Detailed Implementation

[0020] The present disclosure will be described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are illustrated. However, the present disclosure may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the concepts of the present disclosure to those skilled in the art.

[0021] The advantages and features of this disclosure, and its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make this disclosure thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0022] The shapes, dimensions, scales, angles, quantities, etc., disclosed in the accompanying drawings for describing various embodiments of this disclosure are merely exemplary, and this disclosure is not limited thereto. The same reference numerals always refer to the same elements. Throughout this specification, the same elements are represented by the same reference numerals. As used herein, the terms "comprising," "having," "including," etc., indicate that additional parts may be added, unless the term "only" is used. As used herein, the singular forms "a," "an," and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0023] The elements in the various embodiments of this disclosure should be interpreted as including tolerances, even if not explicitly stated otherwise.

[0024] When describing positional relationships, for example, when the positional relationship between two parts is described as "above", "over", "below", and "adjacent", one or more other parts can be placed between the two parts, unless "exactly" or "directly" is used.

[0025] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0026] Any implementation described in this article as an "example" is not necessarily to be interpreted as superior to or advantageous to other implementations.

[0027] When describing temporal relationships, discontinuous cases may be included when the temporal order is described as such as "after", "following", "next", and "before", unless more restrictive terms such as "exactly", "immediately", or "directly" are used.

[0028] Furthermore, when an element or layer is "connected," "joined," or "adhered" to another element or layer, it means that the element or layer can be directly connected or adhered to the other element or layer, and also indirectly connected or adhered to the other element or layer, wherein one or more intermediate elements or layers are "set" or "inserted" between these elements or layers, unless otherwise specified. It should be understood that this means elements can be arranged to be in direct contact with each other, or they can be arranged not to be in direct contact with each other.

[0029] The terms "first element," "second element," "and / or," and "third element" should be understood as one of the first, second, and third elements, or any combination or all combinations of the first, second, and third elements. For example, A, B, and / or C can refer to only A; only B; only C; any combination or some combination of A, B, and C; or all of A, B, and C.

[0030] The term “at least one of the three listed items” should be understood to include any and all combinations of one or more of the associated listed items. For example, “at least one of the first, second and third elements” means all combinations of the three listed elements, combinations of any two of the three elements, and each individual unit, namely the first, second or third element.

[0031] As will be fully understood by those skilled in the art, the features of the various embodiments of this disclosure may be partially or entirely linked or combined with each other, and may operate differently from each other and be technically driven. The embodiments of this disclosure may be performed independently of each other, or may be performed together in an interdependent relationship.

[0032] In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such descriptions would unnecessarily obscure the focus of this disclosure. Embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure. Figure 2 This is a diagram illustrating an example of an implementation of a parallax film bonded to a display panel.

[0034] Reference Figure 1 The display device according to the embodiments of the present disclosure may include a display panel PNL and a parallax film 30. The display panel PNL displays a two-dimensional (2D) image in 2D mode and a three-dimensional (3D) image in 3D mode. The parallax film 30 is disposed on the display panel PNL and includes a plurality of lenses.

[0035] The display panel PNL can be implemented as a liquid crystal panel including a pixel array 10, a first polarizer 11 and a second polarizer 12, and a light source unit 20. The pixel array 10 may include a lower substrate and an upper substrate facing each other, a liquid crystal layer filling the space between the upper and lower substrates, a thin-film transistor (TFT) array disposed in the lower substrate, and a color filter array disposed in the upper substrate. The pixel array 10 may include multiple liquid crystal cells as light-receiving elements. The light source unit 20 can provide light to the pixel array 10. The light source used in the light source unit 20 may be a fluorescent lamp array, a light-emitting diode (LED) array, or a laser source array. To induce uniform surface light emission, the light source unit 20 may include a light guide plate and multiple optical sheets. Furthermore, when the display panel PNL includes self-emissive devices, the light source unit 20 may be omitted. The display panel PNL can be implemented as an electrophoretic panel, a quantum dot panel, or an organic light-emitting panel.

[0036] The first polarizer 11 and the second polarizer 12 may each have transmission axes that intersect each other. Depending on the type of display panel PNL, the first polarizer 11 and the second polarizer 12 may be omitted on one or both sides.

[0037] The parallax film 30 can divide an image into multiple views (hereinafter referred to as "views") in a three-dimensional (3D) mode. The parallax film 30 can be implemented as an array of lenticular lenses, in which lenses with a certain curvature and a certain spacing are arranged regularly. For example... Figure 2 As shown, the cylindrical lens array can be a switchable lens array (SLA), which is turned on or off by a control voltage and adjusted in terms of refractive index variation. One of the 3D mode and the two-dimensional (2D) mode can be selectively achieved by turning the switchable lens array (SLA) on / off.

[0038] The switchable lens array SLA may include a first substrate SUB1 and a second substrate SUB2 opposite to each other, a liquid crystal layer LC located between the first substrate SUB1 and the second substrate SUB2, a second electrode E2 located in the second substrate SUB2, and a plurality of first electrodes E1 disposed in the first substrate SUB1 to correspond to the lens regions corresponding to the spacing.

[0039] A switchable lens array (SLA) can output 2D or 3D images depending on whether a voltage is applied to it. Specifically, a switchable lens array (SLA) can output a 3D image in 3D mode based on the applied voltage, and a 2D image in 2D mode based on the absence of applied voltage.

[0040] In 3D mode, the highest voltage can be applied to the first electrode E1, which is located at the center of the lens region. A voltage that gradually decreases in a direction away from the center of the lens region can also be applied to the first electrode E1. The lowest voltage among the voltages applied to the first electrode E1 can be applied to the second electrode E2. At this time, the refractive index at the center of the lens region can be minimized, and it can gradually increase in a direction away from the center of the lens region, thus obtaining optical refractive index differences corresponding to multiple views. Therefore, the left-eye image L of the display panel PNL can be provided to the viewer's (or user's) left eye LE via the switchable lens array SLA, and the right-eye image R of the display panel PNL can be provided to the viewer's (or user's) right eye RE via the switchable lens array SLA.

[0041] In 2D mode, since no voltage is applied, there may be no refractive index difference between the first electrode E1 and the second electrode E2. Therefore, the switchable lens array (SLA) can function like a transparent film. Thus, the 2D image of the display panel PNL can be provided to the user's two eyes through the switchable lens array (SLA).

[0042] Figure 3 This is a diagram showing the alignment relationship between the parallax film and the display panel with a pixel offset structure.

[0043] refer to Figure 3 The display panel PNL can have a pixel offset structure for 3D implementation. In other words, the display panel PNL can include a first pixel row containing a first pixel and a second pixel row containing a second pixel adjacent to the first pixel, and the position of the second pixel can be offset by a predetermined interval DD in the pixel row direction relative to the position of the first pixel. The predetermined interval DD can be 1 / 4 of the subpixel width PW. Therefore, RGB pixels, BRG pixels, and GBR pixels can be arranged continuously and repeatedly in the same pixel column.

[0044] At this time, the lens provided in the parallax film 30 can be placed perpendicular to the pixel row direction. That is to say, the parallax film 30 can be attached to the display panel PNL in a direction perpendicular to the pixel row direction without tilting.

[0045] Adjacent pixel rows can be arranged in a zigzag pattern offset by 1 / 4 of the subpixel width PW, and the parallax film 30 can be attached to the display panel PNL in a direction perpendicular to the pixel row direction. Therefore, the reduction in brightness of the 2D image can be minimized or reduced, and view segmentation can be easily performed without overlapping with the 3D image.

[0046] Figure 4 This is a functional block diagram illustrating a display device according to an embodiment of the present disclosure. The display device according to an embodiment of the present disclosure may include the parallax film 30 described above, but in... Figure 4 The Chinese characters are omitted for convenience.

[0047] Reference Figure 4 The display device according to embodiments of the present disclosure may include a host system STM, a timing controller TCON, a data driver DRV for the data line DL that drives the display panel PNL, and a gating driver GRV for the gating line GL that drives the display panel PNL.

[0048] The liquid crystal unit Clc of the display panel PNL can be an R, G, or B sub-pixel SP. The placement position of the sub-pixel SP can be offset by a certain interval through the pixel row unit.

[0049] The liquid crystal cell Clc can be driven by the voltage difference between the pixel electrode 1, which receives the TFT charging data voltage, and the common electrode 2, which receives a common voltage Vcom. The common voltage Vcom can be supplied to the common electrode 2 via a common voltage supply line. A storage capacitor Cst, which maintains the voltage of the liquid crystal cell during a frame period, can be connected to the liquid crystal cell Clc.

[0050] The host system STM can be implemented as a television system, set-top box, navigation system, DVD player, Blu-ray player, personal computer (PC), home theater system, or telephone system. The host system STM converts the digital video data of the input image into a format suitable for the display panel PNL. The host system STM transmits the digital video data of the input image and timing signals Vsync, Hsync, DE, and CLK to the timing controller TCON.

[0051] The timing controller TCON can receive timing signals from the host system STM, such as the vertical sync signal Vsync, the horizontal sync signal Hsync, the data enable signal DE, and the master clock CLK. These timing signals can be synchronized with the digital video data of the input image. The timing controller TCON can use the timing signals Vsync, Hsync, DE, and CLK to generate source timing control signals for controlling the operational timing of the data driver DRV and gating timing control signals for controlling the operational timing of the gating driver GRV.

[0052] The timing controller TCON can respond to external inputs to enable a 2D mode for implementing 2D images or a 3D mode for implementing 3D images.

[0053] The timing controller TCON transmits digital video data from the input image received from the host system STM to the data driver DRV. To improve the sharpness reduction of 2D images caused by pixel offset structures, the timing controller TCON may include data processing circuitry, the operation of which is enabled in 2D mode. In 2D mode, the timing controller TCON can transmit the output of the data processing circuitry to the data driver DRV.

[0054] Based on the source timing control signal, the data driver DRV can sample and latch image data to convert it into a parallel data format. Furthermore, the data driver DRV can convert the latched data into an analog gamma-compensated voltage to generate a data voltage, which can then be supplied to the data line DL.

[0055] Based on the gating timing control signal, the gating driver GRV can generate gating pulses (or scan pulses) synchronized with the data voltage to supply gating pulses to the gating line GL.

[0056] Figure 5 This is a diagram showing the configuration of the data processing circuitry of a display device according to an embodiment of the present disclosure. Figure 6 It is shown Figure 5 A diagram illustrating the operation of the data processing circuit. Figures 7 to 9 It is a description Figure 6 The graph required for data processing operations.

[0057] Reference Figure 5 and Figure 6 According to embodiments of the present disclosure, the data processing circuit DSP can be used to improve the reduction in sharpness that occurs when displaying 2D images on a display panel having a pixel structure for 3D implementation. Therefore, the data processing circuit DSP can be enabled when operating in 2D mode, and at least some of its components can be inoperable in 3D mode.

[0058] The data processing circuit DSP may include an input circuit 100, a detection circuit 102, a colorimetric conversion circuit 104, a subpixel rendering circuit 106, a bypass circuit 108, and an output circuit 110.

[0059] In 2D mode, the input circuit 100 can receive image data from an external image source circuit (host system, etc.) to realize a 2D input image.

[0060] The detection circuit 102 can detect letters in 2D input image data and determine whether the letters are clear or unclear.

[0061] The detection circuit 102 can use a predetermined operator (e.g., the Sobel operator) to detect edge regions in the 2D input image data to detect letter positions within the 2D input image data. The Sobel operator can be a representative first-order differential slope operator. Because the pixel values ​​of letters differ significantly from the surrounding background, and the pixel values ​​of letters are similar to each other, large slope values ​​may appear in the edge portions of letters. The detection circuit 102 can detect edge regions corresponding to letter portions from the input image by using an image representing the letter positions obtained through the Sobel operator as a mask.

[0062] The detection circuit 102 can detect whether the edge image data is sharp or not based on the changes in the luminance component (Y) or the chrominance component (Cb, Cr) of the edge image data that realizes the edge region.

[0063] When the change in the color difference component (Cb, Cr) of the edge image data exceeds a predetermined threshold or the change in the luminance component (Y) of the edge image data exceeds a predetermined threshold, the detection circuit 102 can detect that the corresponding edge image data is of the sharp type. When the change in the color difference component (Cb, Cr) of the edge image data does not exceed a predetermined threshold or the change in the luminance component (Y) of the edge image data does not exceed a predetermined threshold, the detection circuit 102 can detect that the corresponding edge image data is of the non-sharp type.

[0064] Clear type can be Microsoft Windows font rendering technology, and the shape of the letter string can be improved through specific methods of the computer display. For example, in Figure 7 As shown in (C), the clear-type rendering method can use anti-aliasing to smooth out letter strings in subpixels and reduce anti-aliasing. Figure 7 In (B), the grayscale rendering method can be executed by pixel units and can be a grayscale anti-aliasing method, and Figure 7 In (C), the sharp-type rendering method can be an anti-aliasing method performed by subpixel units. Because the human eye is sensitive to changes in brightness but not to changes in color, it may not perceive color variations well within a narrow range. Based on this, sharp-type rendering may actually sacrifice some image quality (color perception) to achieve brightness differences. When representing black grayscale letters against a white grayscale background, sharp-type rendering can use a method of decreasing or increasing grayscale levels in the order of RGB subpixels to reduce rapid brightness changes between the background and the letters. However, because sharp-type rendering has already been developed for RGB stripes, it may be difficult to achieve the desired anti-aliasing effect when the pixel structure is a mixture of RGB / GBR / BRG.

[0065] Clear type rendering can be applied to represent true type fonts or open type fonts used by users and system applications. For example, a string of letters entered into Microsoft Word can be represented using clear type rendering. In other words, clear type rendering can be applied only to strings of letters displayed on specific types of computer monitors.

[0066] Because display panels have pixel offset structures such as RGB, BRG, and GBR used for 3D implementation, a colorimetric conversion process may be required to transform the colorimetric representation of the input image data according to the pixel offset structure. On the other hand, when the input image includes sharp-type image data, problems such as unexpected color shifting of letter boundaries or reduced sharpness may occur during the colorimetric conversion process. As mentioned above, this may be because sharp-type image data is optimized for RGB stripe structures.

[0067] The bypass circuit 108 can receive detection results from the detection circuit 102. When the edge image data of the edge region of the 2D input image is of the sharp type, the bypass circuit 108 can output sharp edge image data without applying color mapping conversion corresponding to the pixel offset structure of the display panel. As described above, when bypassing the edge image data of letters configured with the sharp type without color mapping conversion, side effects such as a reduction in sharpness can be minimized or reduced in the image at the corresponding position. That is, when bypassing the edge image data of letters configured with the sharp type without color mapping conversion, anti-aliasing effects proportional to the degree of sharpness applied can be obtained.

[0068] The color image conversion circuit 104 can receive detection results from the detection circuit 102. The color image conversion circuit 104 can convert and output color images of non-sharp edge image data and non-edge image data based on the pixel offset structure of the display panel. Non-edge image data can be image data representing areas other than edge regions in the input image.

[0069] The following will refer to Figure 3 The pixel offset structure is used to describe the color image conversion operation of the color image conversion circuit 104.

[0070] The colormap offset can be omitted on the 4k-3 (where k can be a natural number) pixel row of the reset RGB. Compared to the 4k-3 pixel row, the colormap of the 4k-2 pixel row of the repeating BRG can be offset to the right by 1 / 4 subpixel width PW. Compared to the 4k-2 pixel row, the colormap of the 4k-1 pixel row of the repeating GBR can be offset to the right by 1 / 4 subpixel width PW. Compared to the 4k-1 pixel row, the colormap of the 4kth pixel row of the repeating RGB can be offset to the right by 1 / 4 subpixel width PW.

[0071] The subpixel rendering circuit 106 can receive detection results from the detection circuit 102 and color map conversion results from the color map conversion circuit 104.

[0072] The subpixel rendering circuit 106 can perform anti-aliasing on non-sharp edge image data whose color map has been converted, and can output anti-aliased edge image data, thus improving line zagging that occurs in non-sharp edge image data. The reason for line zagging may be that the RGB placement order is different based on position when pixel offset is applied, and therefore the fluctuation range of brightness peaks depends on the vertical position when representing a straight line.

[0073] To minimize or reduce the fluctuation range of location-based brightness peaks, the subpixel rendering circuit 106 can improve line jaggedness through subpixel rendering based on the G subpixel position and neighboring subpixels.

[0074] In a typical RGB stripe structure, the brightest G subpixel can be placed in the center, and the R / B subpixels can be placed to its left and right. The subpixel placement order can be constant regardless of position, so there may be no sharpness issues. However, since the pixel offset structure is designed solely for 3D image quality, and therefore the RGB placement order is offset by a certain unit in the pixel column direction, a reduction in sharpness may occur. The first reason for this reduction in sharpness might be that the brightness distribution changes as the position of the brightest G subpixel changes, and the second reason might be the different RGB shift orders between adjacent pixel rows.

[0075] To address this issue, the subpixel rendering circuit 106 can change the brightness of the first edge image data to be displayed on the subpixel of the target pixel, and can also change the brightness of the second edge image data to be displayed on a subpixel of a neighboring pixel adjacent to the target pixel, such that the brightness peak of the brightness distribution of each pixel corresponding to the non-sharp edge image data is set at the center of each pixel.

[0076] The subpixel rendering circuit 106 can use subpixels near the corresponding pixel to set the brightness peak of the brightness distribution of the target pixel at the center of the corresponding pixel.

[0077] For example, such as Figure 8As shown, in the non-offset brightness distribution (L distribution 1) of the BRG pixel (target pixel), the brightness peak ② can be set closer to the right G sub-pixel. Therefore, when the brightness of the corresponding G sub-pixel decreases by a first value through sub-pixel rendering, and the brightness of the left G sub-pixel included in the adjacent pixel increases by this first value, the brightness peak of the target pixel's brightness distribution (L distribution 2) can move to the center of the target pixel (see ②'GBRG).

[0078] Furthermore, in the non-offset state of the luminance distribution (L distribution 1) of the GBR pixel (target pixel), the luminance peak ③ can be set closer to the left G sub-pixel. Therefore, when the luminance of the R sub-pixel decreases by a first value through sub-pixel rendering, and the luminance of the right R sub-pixel included in the adjacent pixel increases by that first value, the luminance peak of the luminance distribution (L distribution 2) of the target pixel can move to the center of the target pixel (see ③'RGBR).

[0079] The following will refer to Figure 9 The subpixel rendering operation performed by the subpixel rendering circuit 106 is also described.

[0080] refer to Figure 9 In the RGB of the 4th, 6th and 11th pixel rows, the subpixel rendering circuit 106 can reduce the B brightness of the target pixel and increase the B brightness of the adjacent pixel on the left, thus moving the brightness peak of the brightness distribution of the target pixel toward the center of the target pixel.

[0081] In the BRG at the 2nd, 7th, 9th and 12th pixel positions, the subpixel rendering circuit 106 can reduce the G brightness of the target pixel and increase the G brightness of the adjacent pixel on the left, thus moving the brightness peak of the brightness distribution of the target pixel towards the center of the target pixel.

[0082] In the GBR at the 5th and 10th pixel row positions, the subpixel rendering circuit 106 can reduce the G brightness of the target pixel and increase the G brightness of the adjacent pixel on the right, thus moving the brightness peak of the brightness distribution of the target pixel towards the center of the target pixel.

[0083] In the GBR at the 3rd and 8th pixel row positions, the subpixel rendering circuit 106 can reduce the R brightness of the target pixel and increase the R brightness of the adjacent pixel on the left, thus moving the brightness peak of the brightness distribution of the target pixel towards the center of the target pixel.

[0084] As described above, the subpixel rendering circuit 106 can perform subpixel rendering based on the degree of pixel offset and brightness distribution to minimize or reduce changes in brightness peaks. In this case, the rendering weights used for brightness adjustment can be adjusted differently based on the degree of pixel offset and brightness distribution.

[0085] The output circuit 110 can receive the output of each of the color map conversion circuit 104, the subpixel rendering circuit 106, and the bypass circuit 108 to transmit the received output to the data driver.

[0086] Figure 10 This is a diagram illustrating the application of colormap transformation to edge image data of a non-sharp type.

[0087] refer to Figure 10 Color mismatch may occur when colorimetric transformation is not performed on non-sharp edge image data based on the pixel offset structure. To prevent or reduce this color mismatch, colorimetric transformation should be performed on non-sharp edge image data based on the pixel offset structure.

[0088] Figure 11 This is a diagram illustrating the case where colormap transformation is not applied to sharp-type edge image data.

[0089] Reference Figure 11 When performing colorimetric transformation on sharp-type edge image data based on pixel offset structure, the edge data may be abnormally mixed, and therefore it may be difficult to expect anti-aliasing effects based on the sharp type, and the image sharpness may be significantly reduced.

[0090] Therefore, when skipping and bypassing color map transformation on sharp-type edge image data, the problem of reduced image sharpness can be solved, and to some extent, a sharp-type-based anti-aliasing effect can be expected.

[0091] In this disclosure, based on the pixel offset structure of the display panel, colorimetric conversion operations can be skipped only for sharp edge image data included in the 2D input image, and colorimetric conversion operations can be performed on non-sharp edge image data and non-edge image data. Therefore, this disclosure can solve the problem of reduced sharpness when displaying 2D images on a display panel including a pixel structure for 3D implementation (i.e., the problem occurring in sharp types).

[0092] This disclosure can perform subpixel rendering (i.e., brightness of the target pixel and adjacent subpixels) on non-sharp edge image data to minimize or reduce the fluctuation range of location-based brightness peaks, i.e., increase or decrease the brightness of the target pixel and adjacent subpixels, thereby improving the jagged lines that occur in pixel offset structures.

[0093] The effects of this disclosure are not limited to the examples above, and various other effects may be included in the specification.

[0094] While this disclosure has been specifically shown and described with reference to exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made without departing from the technical concept and scope of this disclosure as defined by the appended claims.

Claims

1. A display device, the display device comprising: Display panel, the display panel having a pixel offset structure for three-dimensional implementation; A parallax film, wherein the parallax film is disposed on the display panel and includes a plurality of lenses; as well as A bypass circuit is configured to output the edge image data of the sharp type in a two-dimensional mode when the edge image data of the edge region of the two-dimensional input image is of the sharp type, without applying a colorimetric conversion corresponding to the pixel offset structure of the display panel.

2. The display device according to claim 1, further comprising a detection circuit configured to apply a predetermined operator to two-dimensional input image data to detect the edge region of the two-dimensional input image, and to detect whether the edge image data is sharp or non-sharp based on a change in the luminance component or a change in the chromatic difference component of the edge image data realizing the edge region.

3. The display device according to claim 2, further comprising: A colorimetric conversion circuit configured to convert based on the pixel offset structure of the display panel and output a colorimetric image of the non-sharp edge image data and a colorimetric image of the non-edge image data; and A subpixel rendering circuit is configured to perform anti-aliasing on the non-sharp edge image data whose color map has been converted, and output anti-aliased edge image data.

4. The display device according to claim 3, wherein, The subpixel rendering circuit changes the brightness of the first edge image data to be displayed on the subpixel of the target pixel and changes the brightness of the second edge image data to be displayed on a subpixel of a neighboring pixel adjacent to the target pixel, such that the brightness peak of the brightness distribution of each pixel corresponding to the non-sharp edge image data is set at the center of each pixel.

5. The display device according to claim 1, wherein, The display panel includes a first pixel row containing a first pixel and a second pixel row containing a second pixel adjacent to the first pixel. Wherein, the position of the second pixel is offset by a predetermined interval relative to the position of the first pixel in the pixel row direction, and The placement direction of the plurality of lenses is perpendicular to the pixel row direction.

6. The display device according to claim 5, wherein, The predetermined interval is 1 / 4 of the width of a sub-pixel.

7. A data processing method for a display device, the display device comprising a display panel and a parallax film, the display panel having a pixel offset structure for three-dimensional implementation, the parallax film being disposed on the display panel and comprising a plurality of lenses, the data processing method comprising: When the edge image data of the edge region of the input image is of the sharp type, the sharp edge image data is output without applying the color map conversion corresponding to the pixel offset structure of the display panel.

8. The data processing method according to claim 7, further comprising: A predetermined operator is applied to the two-dimensional input image data to detect the edge regions of the two-dimensional input image, and the edge image data is detected as either sharp or non-sharp based on the changes in the luminance component or the chromatic difference component of the edge image data that realizes the edge regions.

9. The data processing method according to claim 8, further comprising: Based on the pixel offset structure of the display panel, the color map of the non-sharp edge image data and the color map of the non-edge image data are converted and output; as well as Perform anti-aliasing on the edge image data of the non-sharp type that has been converted by colormap, and output the anti-aliased edge image data.

10. The data processing method according to claim 9, wherein, Performing anti-aliasing on the non-sharp edge image data includes: changing the brightness of a first edge image data to be displayed on a sub-pixel of a target pixel, and changing the brightness of a second edge image data to be displayed on a sub-pixel of a neighboring pixel adjacent to the target pixel, such that the brightness peak of the brightness distribution of each pixel corresponding to the non-sharp edge image data is set at the center of each pixel.

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