Display device

Abstract

A display device 1 is provided with: a plurality of sub-pixels S arranged in a matrix in a display area DA for displaying an image, along a first direction D1 and a second direction D2 that are orthogonal to each other; and a drive circuit 11 for driving the plurality of sub-pixels S on the basis of pixel data of a plurality of pixels G constituting the image. When driving one sub-pixel S among the plurality of sub-pixels S, the drive circuit 11 selects one pixel G corresponding to the one sub-pixel S from among the plurality of pixels G, selects eight pixels G adjacent to the one pixel G from among the plurality of pixels G, and calculates sub-gradation data indicating a gradation of the one sub-pixel S on the basis of pixel data of the one pixel G and the eight pixels G.

Description

display device

[0001] This disclosure relates to a display device.

[0002] Patent documents 1 to 3 disclose a display device that has multiple subpixels in a display area and can improve display quality by rendering an image signal and displaying an image in the display area.

[0003] Japanese Patent Publication No. 2013-097371, Japanese Patent Publication No. 2018-101140, Japanese Patent Publication No. 2019-095513

[0004] In display devices, high resolution is being achieved by using a so-called mosaic arrangement of multiple subpixels. Furthermore, such display devices perform a rendering process that generates data indicating the gradation of subpixels using the pixel data contained in the image signal. There is a demand for both shorter processing times and improved image quality in this rendering process.

[0005] This disclosure aims to shorten rendering time and improve image quality in display devices.

[0006] The display device of this disclosure comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction, respectively, which are mutually orthogonal to a display area for displaying an image, and a drive circuit for driving the plurality of subpixels based on pixel data having information of a plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more subpixels with a first subpixel number along the first direction and two or more subpixels with a second subpixel number along the second direction are arranged in a matrix, the plurality of pixels are arranged in a matrix along the first direction and the second direction, and the subpixel sets correspond to pixel sets in which one or more pixels with a first pixel number along the first direction and two or more pixels with a second pixel number along the second direction are arranged in a matrix. The sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged in this order repeatedly along the first direction, and the first sub-pixel, the third sub-pixel, and the second sub-pixel are arranged in this order repeatedly along the second direction, so that multiple sub-pixels are arranged in this order. When the drive circuit drives one of the multiple sub-pixels, it selects one pixel from the multiple pixels that corresponds to the one sub-pixel, selects eight pixels from the multiple pixels that are adjacent to each other with the one pixel, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the eight pixels.

[0007] Furthermore, the display device of this disclosure comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction, respectively, which are mutually orthogonal to a display area for displaying an image, and a drive circuit that drives the plurality of subpixels based on pixel data having information of a plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more subpixels with a first subpixel number along the first direction and two or more subpixels with a second subpixel number along the second direction are arranged in a matrix, the plurality of pixels are arranged in a matrix along the first direction and the second direction, the subpixel sets correspond to pixel sets in which one or more pixels with a first pixel number along the first direction and two or more pixels with a second pixel number along the second direction are arranged in a matrix, and the subpixels are first subpixels, second subpixels and third subpixels The subpixels are arranged in a plurality of configurations, with the first subpixel, the second subpixel, and the third subpixel being repeated in this order along the first direction, and the first subpixel, the third subpixel, and the second subpixel being repeated in this order along the second direction. When the drive circuit drives one of the plurality of subpixels, it selects one pixel from the plurality of pixels that corresponds to the one subpixel, and selects four pixels from the plurality of pixels, including two pixels adjacent to the one pixel in the first direction and two pixels adjacent to the one pixel in the second direction, and calculates sub-gradation data indicating the gradation of the one subpixel based on the pixel data of the one pixel and the four pixels.

[0008] Furthermore, the display device of this disclosure comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction inclined with respect to the first direction in a display area for displaying an image, and a drive circuit for driving the plurality of subpixels based on pixel data having information of a plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more first subpixel numbers of subpixels along the first direction and two or more second subpixel numbers of subpixels along the second direction are arranged in a matrix, the plurality of pixels are arranged in a matrix along the second direction and a third direction orthogonal to the second direction, and the subpixel sets consist of one or more first pixels along the third direction and two or more second pixels along the second direction Corresponding to the pixel sets arranged in a row, the sub-pixels have a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged in this order repeatedly along the first direction, and the first sub-pixel, the third sub-pixel, and the second sub-pixel are arranged in this order repeatedly along the second direction, so that multiple sub-pixels are arranged in a row. When the drive circuit drives one of the multiple sub-pixels, it selects one pixel from the multiple pixels that corresponds to the one sub-pixel, selects eight pixels from the multiple pixels that are adjacent to each other with the one pixel, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the eight pixels.

[0009] Furthermore, the display device of this disclosure comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction inclined with respect to the first direction in a display area for displaying an image, and a drive circuit for driving the plurality of subpixels based on pixel data having information about a plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more first subpixel numbers of subpixels along the first direction and two or more second subpixel numbers of subpixels along the second direction are arranged in a matrix, the plurality of pixels are located in a matrix along a first direction and a third direction orthogonal to the first direction, and the subpixel sets consist of one or more first pixel numbers of pixels along the first direction and two or more second pixel numbers of pixels along the third direction Corresponding to the pixel sets arranged in a row, the sub-pixels have a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged in this order repeatedly along the first direction, and the first sub-pixel, the third sub-pixel, and the second sub-pixel are arranged in this order repeatedly along the second direction, so that multiple sub-pixels are arranged in a row. When the drive circuit drives one of the multiple sub-pixels, it selects one pixel from the multiple pixels that corresponds to the one sub-pixel, selects eight pixels from the multiple pixels that are adjacent to each other with the one pixel, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the eight pixels.

[0010] Figure 1 is a diagram showing the configuration of a display device according to the first embodiment of the present disclosure. Figure 2 is a diagram showing the circuit configuration of a display panel. Figure 3 is a cross-sectional view of the display panel. Figure 4 is a plan view of the display panel showing an array of multiple subpixels. Figure 5 is a diagram showing the first subpixel set. Figure 6 is a diagram showing the second subpixel set. Figure 7 is a diagram showing the third subpixel set. Figure 8 is a plan view of the display panel showing an array of multiple subpixel sets. Figure 9 is a diagram showing the pixel distance between a subpixel and a pixel. Figure 10 is a diagram showing the filter function of equation (9). Figure 11 is a diagram showing an example of an image acquired by the drive circuit and the corresponding pixel data of the image. Figure 12 is a diagram showing the X-direction value of the first grayscale data included in the pixel data corresponding to the image shown in Figure 11. Figure 13 is a diagram showing an example of a value calculated when the drive circuit performs rendering processing based on the pixel data shown in Figure 11. Figure 14 is a diagram showing the value of the sub-grayscale data of a subpixel when the drive circuit performs rendering processing based on the pixel data corresponding to the image shown in Figure 11. Figure 15 is a diagram showing the X-direction values ​​of the first sub-grayscale data shown in Figure 14. Figure 16 is a diagram showing the sub-grayscale data values ​​of sub-pixels when the drive circuit performs the rendering process of the comparative example based on the pixel data corresponding to the image shown in Figure 11. Figure 17 is a plan view of the sub-pixel set of the first modified example of the first embodiment. Figure 18 is a plan view of the first sub-pixel set of the second modified example of the first embodiment. Figure 19 is a plan view of the first sub-pixel set of the third modified example of the first embodiment. Figure 20 is a plan view of the first sub-pixel set of the fourth modified example of the first embodiment. Figure 21 is a plan view of the first sub-pixel set of the fifth modified example of the first embodiment. Figure 22 is a plan view of the first sub-pixel set of the sixth modified example of the first embodiment. Figure 23 is a plan view of a display panel showing an arrangement of a plurality of sub-pixel sets according to the second embodiment of this disclosure. Figure 24 is a diagram showing the positional relationship between a plurality of sub-pixel sets and a plurality of pixel sets according to the second embodiment of this disclosure. Figure 25 is a diagram showing the circuit configuration of the display panel according to the second embodiment. Figure 26 is a plan view of a display panel showing the arrangement of multiple sub-pixel sets according to a first modified example of the second embodiment. Figure 27 is a diagram showing the positional relationship between multiple sub-pixel sets and multiple pixel sets according to a first modified example of the second embodiment of the present disclosure.Figure 28 is a plan view of a display panel showing an arrangement of multiple sub-pixel sets according to a second modification of the second embodiment of the present disclosure. Figure 29 is a diagram showing the positional relationship between multiple sub-pixel sets and multiple pixel sets according to a second modification of the second embodiment of the present disclosure. Figure 30 is a plan view of a display panel showing an arrangement of multiple sub-pixel sets according to a third modification of the second embodiment of the present disclosure. Figure 31 is a diagram showing the positional relationship between multiple sub-pixel sets and multiple pixel sets according to a third modification of the second embodiment of the present disclosure.

[0011] The embodiments of this disclosure will be described below with reference to the drawings. This disclosure is not limited to the embodiments described below. Furthermore, the components described below include those that are readily conceivable to those skilled in the art, and those that are substantially the same. In addition, the components described below can be combined as appropriate.

[0012] Furthermore, the disclosure is merely an example, and any modifications that a person skilled in the art could easily conceive of while maintaining the spirit of this disclosure are naturally included within the scope of this disclosure. In addition, drawings may schematically represent the width, thickness, shape, etc. of each part in order to clarify the explanation, but these are merely examples and do not limit the interpretation of this disclosure. In addition, in this specification and each drawing, elements similar to those described above in previously shown drawings are denoted by the same reference numerals, and detailed explanations may be omitted as appropriate.

[0013] The X and Y directions shown in the drawings correspond to directions parallel to the main surface of the substrate included in the display device 1. The +X side (the side indicated by the arrow) and the -X side opposite to the +X side in the X direction, and the +Y side (the side indicated by the arrow) and the -Y side opposite to the +Y side in the Y direction, correspond to the sides of the display device 1. The Z direction corresponds to the thickness direction of the display device 1, with the +Z side (the side indicated by the arrow) in the Z direction corresponding to the front side where the image is displayed in the display device 1, and the -Z side (opposite to the +Z side) in the Z direction corresponding to the back side of the display device 1. Furthermore, in this specification, "plan view" means viewing the display device 1 along the Z direction from the +Z side to the -Z side. Note that the X, Y, and Z directions are examples, and this disclosure is not limited to these directions.

[0014] <First Embodiment> Figure 1 is a diagram showing the configuration of a display device 1 according to the first embodiment of the present disclosure. The display device 1 displays an image based on an image signal output from an external device 3 that is electrically connected via a flexible wiring board 2. The display device 1 includes a display panel 10 and a lighting device 20.

[0015] The display panel 10 is a transmissive liquid crystal display. The display panel 10 may also be, for example, an organic EL display or a display using inorganic light-emitting materials. The front surface of the display panel 10 has a display area DA on which an image is displayed. The display panel 10 has a plurality of sub-pixels S arranged in a matrix along a first direction D1 and a second direction D2 in the display area DA. The first direction D1 is parallel to the X direction. The second direction D2 is parallel to the Y direction. In other words, the first direction D1 and the second direction D2 are orthogonal to each other. Details of the sub-pixels S will be described later.

[0016] The lighting device 20 is positioned on the back side of the display panel 10 and emits light toward the display panel 10. The lighting device 20 is, for example, a direct-lit backlight and includes multiple light-emitting diodes.

[0017] Figure 2 shows the circuit configuration of the display panel 10. The display panel 10 includes a drive circuit 11, and each of the multiple sub-pixels S has a switching element SW, a sub-pixel electrode PE, a common electrode CE, a liquid crystal capacitor LC, and a retaining capacitor KC.

[0018] The drive circuit 11 drives a plurality of sub-pixels S. The drive circuit 11 includes a signal processing circuit 11a, a signal output circuit 11b, and a scanning circuit 11c.

[0019] The signal processing circuit 11a generates multiple sub-pixel signals based on the image signal transmitted from the external device 3 (details will be described later), and outputs the generated sub-pixel signals to the signal output circuit 11b. The signal processing circuit 11a also outputs a clock signal to the signal output circuit 11b and the scanning circuit 11c to synchronize the operation of the signal output circuit 11b and the operation of the scanning circuit 11c.

[0020] The signal output circuit 11b outputs each of the multiple sub-pixel signals to the corresponding sub-pixel S. The signal output circuit 11b and the multiple sub-pixels S are electrically connected via multiple signal lines Lb that extend along the second direction D2.

[0021] The scanning circuit 11c scans multiple sub-pixels S in synchronization with the output of sub-pixel signals by the signal output circuit 11b. The scanning circuit 11c and the multiple sub-pixels S are electrically connected via multiple scan lines Lc extending along the first direction D1.

[0022] A switching element SW is composed of, for example, a thin-film transistor (TFT). In a switching element SW, the source electrode and the signal line Lb are electrically connected, and the gate electrode and the scan line Lc are electrically connected.

[0023] The sub-pixel electrode PE is connected to the drain electrode of the switching element SW. Multiple common electrodes CE are arranged to correspond to multiple scan lines Lc. Both the sub-pixel electrode PE and the common electrode CE are translucent.

[0024] The liquid crystal capacitance LC is the capacitance component of the liquid crystal material in the liquid crystal layer 13, which will be described later, located between the sub-pixel electrode PE and the common electrode CE. The retained capacitance KC is located between an electrode at the same potential as the common electrode CE and an electrode at the same potential as the sub-pixel electrode PE.

[0025] Figure 3 is a cross-sectional view of the display panel 10. The sub-pixel S further comprises a first substrate 12, a liquid crystal layer 13, and a second substrate 14. The first substrate 12, the liquid crystal layer 13, and the second substrate 14 are all light-transmitting and are arranged in this order from the -Z side to the +Z side along the Z direction.

[0026] The first substrate 12 is rectangular in plan view and one is provided for each of the multiple sub-pixels S. The IC chip Ti that constitutes the drive circuit 11 is placed on the first substrate 12 (Figure 1).

[0027] A color filter CF and a signal line Lb are arranged on the main surface 12a on the +Z side of the first substrate 12. The color filter CF is rectangular in plan view and one is placed for each of the multiple sub-pixels S.

[0028] A color filter CF is light-transmitting, and the spectral peaks of the light it transmits are predetermined. The spectral peaks are one of three peaks corresponding to three distinct colors. These three colors are red, green, and blue, but it goes without saying that the number and types of colors are not limited to these. Hereinafter, the color corresponding to the spectral peak of the light transmitted by the color filter CF will be referred to as the color of the color filter CF.

[0029] The signal line Lb is positioned between the color filters CF of two adjacent sub-pixels S in the first direction D1. The signal line Lb is located at a position that coincides with the boundary between two adjacent sub-pixels S in the first direction D1. On the main surface 12a, a scan line Lc (not shown in Figure 3) is positioned between the color filters CF of two adjacent sub-pixels S in the second direction D2.

[0030] Furthermore, on the first substrate 12, a sub-pixel electrode PE is arranged on the +Z side of the color filter CF and signal line Lb, via an insulating layer IL1. The sub-pixel electrode PE overlaps with the color filter CF in the Z direction.

[0031] Furthermore, on the first substrate 12, a light-shielding film SM and a common electrode CE are arranged on the +Z side of the sub-pixel electrode PE via an insulating layer IL2.

[0032] The light-shielding film SM has light-shielding properties and partitions multiple sub-pixels S. In other words, the light-shielding film SM is located at a position that overlaps with the boundaries of multiple sub-pixels S that are adjacent to each other in the first direction D1 and the second direction D2. Furthermore, the light-shielding film SM overlaps with the signal line Lb and the scan line Lc in the Z direction.

[0033] The common electrode CE is laminated on the +Z side of the light-shielding film SM and has a slit SL, positioned to span two adjacent sub-pixel electrodes PE. In this way, the common electrode CE and sub-pixel electrodes PE are arranged on the first substrate 12. In other words, the display panel 10 is a transverse electric field type liquid crystal display.

[0034] The liquid crystal layer 13 is composed of multiple liquid crystal molecules LM. The liquid crystal layer 13 is located between two alignment films AL that face each other in the Z direction. The orientation of the liquid crystal molecules LM is restricted by the two alignment films AL.

[0035] The second substrate 14 has a rectangular shape in plan view, and one is provided for each of the multiple sub-pixels S.

[0036] Furthermore, the display panel 10 also includes a first polarizing plate 15 located on the back side of the first substrate 12, and a second polarizing plate 16 located on the front side of the second substrate 14.

[0037] The first polarizing plate 15 has a transmission axis perpendicular to the Z direction. The second polarizing plate 16 has a transmission axis perpendicular to the transmission axis of the first polarizing plate 15 and the Z direction.

[0038] Next, the operation of the display panel 10 will be described. First, the case where the display panel 10 is a normally black system and black is displayed in the display area DA will be described. In this case, the drive circuit 11 does not drive the sub-pixels S, and no electric field is generated in the liquid crystal layer 13. As a result, the orientation of the liquid crystal molecules LM is restricted by the alignment film AL.

[0039] Light from the illumination device 20 enters the first polarizing plate 15 from the back side of the display panel 10. The light that passes through the first polarizing plate 15 is linearly polarized, having a polarization axis parallel to the transmission axis of the first polarizing plate 15. The light that passes through the first polarizing plate 15 passes through the first substrate 12 and enters the liquid crystal layer 13.

[0040] When the orientation of the liquid crystal molecules LM is restricted by the alignment film AL, the polarization axis of the light transmitted through the liquid crystal layer 13 does not rotate. The light transmitted through the liquid crystal layer 13 passes through the second substrate 14 and is incident on the second polarizing plate 16.

[0041] The polarization axes of the light transmitted through the liquid crystal layer 13 and the second substrate 14 are orthogonal to the transmission axis of the second polarizer 16, and the light transmitted through the liquid crystal layer 13 does not pass through the second polarizer 16. In other words, when the orientation of the liquid crystal molecules LM is restricted by the alignment film AL, the light from the illumination device 20 does not pass through the sub-pixels S. As a result, black is displayed in the display area DA.

[0042] Next, the operation of the display panel 10 when an image is displayed in the display area DA will be described. In this case, the sub-pixel signal generated by the signal processing circuit 11a is output to a plurality of sub-pixels S via the signal output circuit 11b. The sub-pixel signal includes sub-grayscale data indicating the grayscale of the sub-pixel S, as will be described later.

[0043] When the sub-pixel S is scanned by the scanning circuit 11c, the switching element SW is operated and a sub-pixel signal is transmitted to the sub-pixel electrode PE. This creates a potential difference between the common electrode CE and the sub-pixel electrode PE, generating an electric field in the liquid crystal layer 13, which changes the orientation of the liquid crystal molecules LM. The orientation of the liquid crystal molecules LM corresponds to the sub-gradation data. In other words, in the liquid crystal layer 13, the orientation of the polarization axis of light changes according to the sub-gradation data. Light that has passed through the liquid crystal layer 13 and whose polarization axis is not perpendicular to the transmission axis of the second polarizer 16 passes through the second polarizer 16.

[0044] The brightness of the light transmitted through the second polarizing plate 16 corresponds to the brightness of the sub-gradation data. In this way, the orientation of the liquid crystal molecules LM is adjusted by the sub-pixel signal, thereby adjusting the light transmittance of the liquid crystal layer 13 and, consequently, the brightness of the light transmitted through the liquid crystal layer 13. Furthermore, the light transmitted through the color filter CF on the first substrate 12 has a color corresponding to the color of the color filter CF. In other words, the light transmitted through the second polarizing plate 16 has a color corresponding to the color of the color filter CF, and its brightness is adjusted.

[0045] In each of the multiple sub-pixels S, the color of the color filter CF, that is, the color of the light transmitted through the second polarizer 16, corresponds to the color of the sub-pixel S. Furthermore, in each of the multiple sub-pixels S, the brightness of the light transmitted through the second polarizer 16 is adjusted according to the sub-gradation data. As a result, an image based on the image signal is displayed in the display area DA. Note that the display panel 10 may also use a normally white method.

[0046] Next, the arrangement of multiple subpixels S in the display area DA will be explained using Figure 4. Figure 4 is a plan view of the display panel 10 showing the arrangement of multiple subpixels S. The multiple subpixels S shown in Figure 4 are indicated by a color filter CF and a light-shielding film SM. In a plan view, the multiple subpixels S are separated by the light-shielding film SM, and the color filter CF is rectangular in shape.

[0047] Multiple subpixels S are all the same rectangular shape in plan view. Specifically, each subpixel S has two sides parallel to the first direction D1 and two sides parallel to the second direction D2, and is rectangular in plan view with a length in the second direction (length along the second direction) being longer than the length in the first direction (length along the first direction D1). The multiple subpixels S are arranged in a matrix in the display area DA along the first direction D1 and the second direction D2.

[0048] Furthermore, in the display area DA, where multiple subpixels S are arranged in a matrix, the column number of the subpixel S located furthest to the -X side is set to 0 (zero), and the column number increases by 1 as you move towards the +X side. Also, in the display area DA, where multiple subpixels S are arranged in a matrix, the row number of the subpixel S located furthest to the -Y side is set to 0 (zero), and the row number increases by 1 as you move towards the +Y side.

[0049] Multiple subpixels S have multiple first subpixels Sα, multiple second subpixels Sβ, and multiple third subpixels Sγ. In the first subpixels Sα, second subpixels Sβ, and third subpixels Sγ, the color of the color filter CF, i.e., the color of the subpixels S, is different from each other. The color of the first subpixel Sα is red. The color of the second subpixel Sβ is green. The color of the third subpixel Sγ is blue. In other words, the first subpixel Sα is a red subpixel S. The second subpixel Sβ is a green subpixel S. The third subpixel Sγ is a blue subpixel S. Needless to say, the color of the subpixels S is not limited to these; it is sufficient that the colors of the first subpixel Sα, the second subpixel Sβ, and the third subpixel Sγ are different from each other. Also, in Figure 4, the symbols in parentheses indicate the color of the subpixel S, where "R" is red, "G" is green, and "B" is blue. When explaining common aspects of the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ without distinguishing between them, they may simply be referred to as "sub-pixel S."

[0050] Multiple first subpixels Sα, multiple second subpixels Sβ, and multiple third subpixels Sγ are arranged in the configuration shown in Figure 4. The arrangement of subpixels S shown in Figure 4 is called a mosaic arrangement. Specifically, in a mosaic arrangement, in a plan view, the first subpixel Sα, second subpixel Sβ, and third subpixel Sγ are repeatedly arranged in this order along the first direction D1, and the first subpixel Sα, third subpixel Sγ, and second subpixel Sβ are repeatedly arranged in this order along the second direction D2.

[0051] Furthermore, multiple subpixels S constitute three (three types) subpixel sets CS. The three subpixel sets CS are composed of subpixels S with a first subpixel count along the first direction D1 and subpixels S with a second subpixel count along the second direction D2, arranged in a matrix. The first and second subpixel counts are natural numbers of 2 or more, and in this first embodiment, the first subpixel count is 2 and the second subpixel count is 3. In other words, the subpixel set CS is a matrix in which the number of rows corresponds to the second subpixel count (3) and the number of columns corresponds to the first subpixel count (2).

[0052] Figure 4 shows the first sub-pixel set CS1, the second sub-pixel set CS2, and the third sub-pixel set CS3, respectively.

[0053] Furthermore, when describing the first sub-pixel set CS1, the second sub-pixel set CS2, and the third sub-pixel set CS3 without distinguishing between them, they may simply be referred to as sub-pixel set CS. In addition, in multiple sub-pixel sets CS, the column number of the sub-pixel S located furthest towards -X is set to 0 (zero), and the column number increases by 1 as one moves toward the +X side. Moreover, in a sub-pixel set CS, the row number of the sub-pixel S located furthest towards -Y is set to 0 (zero), and the row number increases by 1 as one moves toward the +Y side.

[0054] Figure 5 shows the first subpixel set CS1. The first subpixel set CS1 is composed of two subpixels S along the first direction D1 and three subpixels S along the second direction D2 arranged in a matrix. In the first subpixel set CS1, the subpixel S with row number 0 and column number 0 is the first subpixel Sα, and the first subpixel Sα, the second subpixel Sβ, and the third subpixel Sγ are arranged in the mosaic arrangement described above.

[0055] The thick lines in Figure 5 represent multiple pixels G corresponding to the image signal output from the external device 3. The multiple pixels G constitute the image displayed in the display area DA and are arranged in a matrix along the mutually orthogonal X and Y directions in the display area DA. In this first embodiment, the directions in which the multiple pixels G and the multiple subpixels S are arranged are the same. The pixels G are square in plan view.

[0056] The sub-pixel set CS corresponds to a pixel set CG in which pixels G with a first number of pixels along the X direction and pixels G with a second number of pixels along the Y direction are arranged in a matrix. That is, the pixel set CG is a matrix in which the number of rows corresponds to the second number of pixels and the number of columns corresponds to the first number of pixels. In this first embodiment, the periphery of the sub-pixel set CS and the periphery of the pixel set CG are rectangular in shape and overlap each other.

[0057] The first pixel number is a natural number greater than or equal to 1, and in this first embodiment, it is 1. The second pixel number is a natural number greater than or equal to 2, and in this first embodiment, it is 2. Furthermore, the second sub-pixel number and the second pixel number are determined to be numbers such that the value obtained by dividing the second sub-pixel number by the second pixel number is greater than 1 and less than or equal to 1.5. Specifically, the value obtained by dividing the second sub-pixel number (3) by the second pixel number (2) is 1.5 (= 3 / 2).

[0058] As a result, the mosaic array of this first embodiment exhibits advantageous effects compared to the striped pixel array of comparison, as described in detail below. Specifically, in the striped pixel array of comparison, a sub-pixel set composed of three sub-pixels S along the first direction D1 corresponds to a pixel set composed of one pixel G, and the value obtained by dividing the second sub-pixel number (1) by the second pixel number (1) is 1. Therefore, compared to the striped pixel array of comparison, the mosaic array of this first embodiment has a smaller second direction D2 length of the sub-pixels S, which allows for higher resolution of the image. Thus, image quality can be improved.

[0059] Furthermore, the first sub-pixel count and the first pixel count are determined to be numbers such that the value obtained by dividing the first sub-pixel count by the first pixel count is 2 or greater and less than 3. Specifically, the value obtained by dividing the first sub-pixel count (2) by the first pixel count (1) is 2 (= 2 / 1).

[0060] As a result, compared to a comparison stripe pixel array where the value obtained by dividing the first sub-pixel count (3) by the first pixel count (1) is 3, the mosaic array of this first embodiment allows for a larger length of the sub-pixel S in the first direction D1. Therefore, compared to a comparison stripe pixel array, the mosaic array of this first embodiment allows for a reduction in the size of the sub-pixel S while securing a region for arranging signal lines Lb aligned along the first direction D1, thereby improving image resolution. Thus, image quality can be improved.

[0061] Furthermore, the image signal contains color data and gradation data that indicate information about pixels G. The color data consists of first color data, second color data, and third color data, each having a different color. The color of the first color data is the same as the color of the first sub-pixel Sα. The color of the second color data is the same as the color of the second sub-pixel Sβ. The color of the third color data is the same as the color of the third sub-pixel Sγ. In other words, the information of multiple pixels G each has three color data sets, each with a different color.

[0062] The gradation data consists of first gradation data corresponding to the first color data and the first sub-pixel Sα, second gradation data corresponding to the second color data and the second sub-pixel Sβ, and third gradation data corresponding to the third color data and the third sub-pixel Sγ. In other words, each of the multiple pixels G has three gradation data corresponding to three color data. Note that the color data and gradation data correspond to "pixel data".

[0063] Furthermore, the first sub-pixel count, second sub-pixel count, first pixel count, and second pixel count are set to numbers such that the ratio of the sum of the first tone data, second tone data, and third tone data of multiple pixels G constituting the pixel set CG (hereinafter referred to as the sum of tone data) to the sum of the sum of the sum of the sum of the sum of the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ of the sub-pixel set CS (hereinafter referred to as the sum of sub-pixel S) is between 0.9 and 1.1.

[0064] Specifically, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the subpixel set CS is the product of the number of first subpixels (2) and the number of second subpixels (3), which is 6 (= 2 × 3). On the other hand, the sum of the number of first-tone data, second-tone data, and third-tone data for the multiple pixels G constituting the pixel set CG is the product of the number of first pixels (1), the number of second pixels (2), and the number of tone data points contained in the information of one pixel G (3), which is 6 (= 1 × 2 × 3). Therefore, the ratio of the total tone data to the total number of subpixels S is 1 (= 6 / 6), which is between 0.9 and 1.1.

[0065] This makes it possible to reduce the difference between the total number of sub-pixels CS and the total number of grayscale data in the pixel group CG. Therefore, it is possible to suppress the resolution deficiency that occurs when the total number of sub-pixels S is relatively small compared to the total number of grayscale data in the image signal. On the other hand, when the total number of sub-pixels S is relatively large compared to the total number of grayscale data in the image signal, the size of the sub-pixels S becomes extremely small, and the decrease in light transmittance of the sub-pixels S reduces the contrast of the image, thereby suppressing the deterioration of image quality.

[0066] In the pixel array CG, the column number of the pixel G located furthest towards -X is set to 0 (zero), and the column number increases by 1 as you move towards +X. Also, in the pixel array CG, the row number of the pixel G located furthest towards -Y is set to 0 (zero), and the row number increases by 1 as you move towards +Y.

[0067] Figure 6 shows the second sub-pixel set CS2. The second sub-pixel set CS2 differs from the first sub-pixel set CS1 only in the arrangement of the sub-pixels S. Specifically, in the second sub-pixel set CS2, the first sub-pixel Sα of the first sub-pixel set CS1 is replaced by the third sub-pixel Sγ, the second sub-pixel Sβ of the first sub-pixel set CS1 is replaced by the first sub-pixel Sα, and the third sub-pixel Sγ of the first sub-pixel set CS1 is replaced by the second sub-pixel Sβ.

[0068] In other words, the second sub-pixel set CS2 is composed of two sub-pixels S aligned in the first direction D1 and three sub-pixels S aligned in the second direction D2, arranged in a matrix. In the second sub-pixel set CS2, the sub-pixel S with row number 0 and column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ are arranged in the mosaic arrangement described above. The second sub-pixel set CS2 also corresponds to a pixel set CG in which a first number of pixels (1) aligned in the first direction D1 and a second number of pixels (2) aligned in the second direction D2 are arranged in a matrix.

[0069] Figure 7 shows the third sub-pixel set CS3. The third sub-pixel set CS3 differs from the first sub-pixel set CS1 only in the arrangement of the sub-pixels S. Specifically, in the third sub-pixel set CS3, the first sub-pixel Sα of the first sub-pixel set CS1 is replaced by the second sub-pixel Sβ, the second sub-pixel Sβ of the first sub-pixel set CS1 is replaced by the third sub-pixel Sγ, and the third sub-pixel Sγ of the first sub-pixel set CS1 is replaced by the first sub-pixel Sα.

[0070] In other words, the third sub-pixel set CS3 is composed of two sub-pixels S aligned in the first direction D1 and three sub-pixels S aligned in the second direction D2, arranged in a matrix. In the third sub-pixel set CS3, the sub-pixel S with row number 0 and column number 0 is the second sub-pixel Sβ, and the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ are arranged in the mosaic arrangement described above. Furthermore, the third sub-pixel set CS3 corresponds to a pixel set CG in which a first number of pixels (1) aligned in the first direction D1 and a second number of pixels (2) aligned in the second direction D2 are arranged in a matrix.

[0071] Figure 8 is a plan view of the display panel 10 showing the arrangement of multiple subpixel sets CS. Because the multiple subpixels S are arranged in the mosaic arrangement described above, the multiple subpixel sets CS are arranged in the order of first subpixel set CS1, second subpixel set CS2, and third subpixel set CS3 along the first direction D1, and in the order of first subpixel set CS1, third subpixel set CS3, and second subpixel set CS2 along the second direction D2. Thus, the multiple subpixel sets CS are arranged in a matrix along the first direction D1 and the second direction D2, respectively.

[0072] Furthermore, in the multiple sub-pixel sets CS arranged in a matrix in the display area DA, the column number of the sub-pixel set CS located furthest to the -X side is set to 0 (zero), and the column number increases by 1 as you move toward the +X side. Also, in the multiple sub-pixel sets CS arranged in a matrix in the display area DA, the row number of the sub-pixel set CS located furthest to the -Y side is set to 0 (zero), and the row number increases by 1 as you move toward the +Y side.

[0073] Furthermore, each of the three sub-pixel sets CS1, CS2, and CS3 corresponds to the pixel set CG. Also, as described above, in the display area DA, the multiple pixels G are arranged in a matrix along the X and Y directions, respectively. Therefore, in this first embodiment, in the display area DA, the multiple pixels G are partitioned by the three sub-pixel sets CS.

[0074] Furthermore, in a matrix arrangement of multiple pixels G in the display area DA, the column number of the pixel G located furthest to the -X side is set to 0 (zero), and the column number increases by 1 as you move towards the +X side. Also, in a matrix arrangement of multiple pixels G in the display area DA, the row number of the pixel G located furthest to the -Y side is set to 0 (zero), and the row number increases by 1 as you move towards the +Y side.

[0075] Furthermore, in the following, the row and column numbers of multiple subpixels S, multiple pixels G, and multiple subpixel sets CS arranged in a matrix in the display area DA will be referred to as the display row number and display column number, respectively. In addition, the row and column numbers of multiple subpixels S and multiple pixels G arranged in a matrix in the subpixel sets CS and pixel sets CG will be referred to as the set row number and set column number, respectively.

[0076] Next, the process by which the drive circuit 11 generates sub-pixel signals based on the image signal will be described. As described above, the image signal transmitted to the drive circuit 11 has color data and gradation data that indicate information about multiple pixels G.

[0077] The drive circuit 11 performs a rendering process that generates sub-grayscale data indicating the gradation of each of the multiple sub-pixels S, based on the gradation data of the multiple pixels G. The drive circuit 11 generates sub-grayscale data for each of the multiple sub-pixels S using the following equations (1) to (9).

[0078]

[0079] In equation (1), "SP （ｕ，ｖ） " is the sub-grayscale data of a sub-pixel S (hereinafter sometimes referred to as a single sub-pixel S) whose display column number is "u" and display row number is "v" in a matrix arrangement of multiple sub-pixels S in the display area DA.

[0080] In formula (1), "i" ｐ corresponds to the display column number of pixel G used for calculating "SP" （ｕ，ｖ） and is calculated by formula (2). "j" ｐ corresponds to the display row number of pixel G used for calculating "SP" （ｕ，ｖ） and is calculated by formula (3).

[0081]

[0082]

[0083] In formulas (2) and (3), the function "floor(α)" derives the largest integer not exceeding "α". Also, "x" ｐ is the X coordinate of sub-pixel S corresponding to "SP" （ｕ，ｖ） and is calculated by formula (4). "y" ｐ is the Y coordinate of sub-pixel S corresponding to "SP" （ｕ，ｖ） and is calculated by formula (5). The X coordinate and Y coordinate of sub-pixel S are the X coordinate and Y coordinate of the area centroid of sub-pixel S. Note that the length of one side of pixel G is "1".

[0084]

[0085]

[0086] In formula (4), "kx" is the value obtained by dividing the number of first sub-pixels by the number of first pixels. In formula (5), "ky" is the value obtained by dividing the number of second sub-pixels by the number of second pixels.

[0087] Also, in formula (1), "P" ｓ，ｑ is the gradation data corresponding to the color of sub-pixel S corresponding to "SP" among the three gradation data of pixel G with a display column number of "s" and a display row number of "q". （ｕ，ｖ）

[0088] In formula (1), "L" ｓ，ｑ is the distance (hereinafter referred to as pixel distance) between sub-pixel S corresponding to "SP" （ｕ，ｖ） and pixel G corresponding to "P" ｓ，ｑ

[0089] Figure 9 shows the pixel distance between a sub-pixel S and a pixel G. The pixel distance between a sub-pixel S and a pixel G is the distance between the area centroid of sub-pixel S and the area centroid of pixel G in a plan view. Point S indicates the area centroid of sub-pixel S whose display column number is "u" and display row number is "v".

[0090] Multiple points G represent the area centroid of a pixel G in a plan view. Multiple pixels G are rectangular in plan view, with each side having a length of "1" as described above. Therefore, multiple points G are arranged in a matrix, with the distance between two adjacent points G in the X direction and the distance between two adjacent points G in the Y direction being "1". The subscript of a point G is the display column number and display row number of the corresponding pixel G, for example, "G ｉ，ｊ This indicates the area centroid of pixel G whose display column number is "i" and display row number is "j".

[0091] Therefore, "P ｓ，ｑ The area centroid of pixel G corresponding to "SP （ｕ，ｖ） The pixel distance "L" from the area centroid of the sub-pixel S corresponding to " ｓ，ｑ This is calculated by formula (6).

[0092] In equation (6), "x ａ " and "y ａ " is "P ｓ，ｑ These are the X and Y coordinates of the area centroid of the pixel G corresponding to "x". ｐ " and "y ｐ " are the X and Y coordinates of point S, which is the area centroid of the subpixel S, as described above. Note that Figure 9 shows point S and point G ｉ－１，ｊ＋１ Distance from "L" ｉ－１，ｊ＋１ " is shown. Point G ｉ－１，ｊ＋１ In x ａ = x ｉ－１ And y ａ = y ｊ＋１ That is the case.

[0093] Also, as shown in equation (1), if the variable s is "i ｐ -1" to "i ｐ The value is up to +1, and the variable q is "j ｐ -1" to "j ｐThe value is up to +1, and in order to calculate the sub-grayscale data ("SP(u,v)") of one sub-pixel S, the grayscale data ("P") of nine pixels G is used. ｓ，ｑ ") is selected. In other words, "P ｓ，ｑ The number of pixels G corresponding to " is nine.

[0094] Specifically, from equations (1), (2), (3), (4), (5), s = i ｐ and q = j ｐ In this case, one pixel G corresponding to one of the subpixels S among the multiple pixels G is selected.

[0095] Furthermore, for eight of the nine pixels G, excluding one pixel G, a pixel G adjacent to the one pixel G is selected. Specifically, for the eight pixels G, a pixel G adjacent to the one pixel G is selected in each of the following directions: the first direction D1, the second direction D2, the direction in which one of the two diagonals of the pixel G extends, and the direction in which the other diagonal of the pixel G extends.

[0096] For example, one pixel G corresponding to one subpixel S is point G shown in Figure 9. ｉ，ｊ If the pixel G corresponds to a point G, then the eight pixels G have point G ｉ－１，ｊ―１ , point G ｉ，ｊ－１ , point G ｉ＋１，ｊ－１ , point G ｉ－１，ｊ , point G ｉ＋１，ｊ , point G ｉ－１，ｊ＋１ , point G ｉ，ｊ＋１ , point G ｉ＋１，ｊ＋１ The corresponding pixel G is selected.

[0097] Furthermore, in equation (1), the function "S ｎｏｒｍ (L ｓ，ｑ The expression is shown in equation (7).

[0098]

[0099] In equation (7), "S ｓｕｍ This is a coefficient for adjusting the brightness of the image, and is shown in equation (8).

[0100]

[0101] In equations (7) and (8), the function "S(L) ｓ，ｑ) is a filter function, as shown in equation (9).

[0102]

[0103] Figure 10 shows the filter function of equation (9). The filter function of equation (9) is determined based on the pixel distance. The filter function of equation (9) is a three-dimensional interpolation equation.

[0104] In this first embodiment, the first distance k1 is equal to the distance between two adjacent pixels G in either the first direction D1 or the second direction D2. In other words, in this first embodiment, the first distance k1 is 1. Note that the first distance k1 may be a value greater than 0 and less than 1.

[0105] The second distance k2 is greater than the first distance k1. The second distance k2 is equal to twice the distance between two adjacent pixels G in either the first direction D1 or the second direction D2. In other words, in this first embodiment, the second distance k2 is 2.

[0106] The filter function in equation (9) derives a value of 0 or greater when the pixel distance is less than or equal to the first distance k1, a value less than 0 when the pixel distance is greater than the first distance k1 but less than the second distance k2, and 0 when the pixel distance is greater than or equal to the second distance k2.

[0107] In addition, when calculating the sub-grayscale data of sub-pixels S located at the periphery of the display area DA in equation (1), grayscale data of pixels G located outside the display area DA may be required. However, in reality, there is no image, i.e., no pixels G, outside the display area DA. Therefore, in this case, the drive circuit 11 places a virtual pixel G having the same grayscale data as the pixels G located at the periphery of the display area DA outside the display area DA and calculates the sub-grayscale data according to equation (1).

[0108] In this way, the drive circuit 11 multiplies the pixel data of one pixel G and eight pixels G by a value derived by the filter function. Based on the pixel data of one pixel G and eight pixels G, the drive circuit 11 calculates sub-grayscale data that indicates the grayscale of one sub-pixel S.

[0109] The above explains the formula for calculating the sub-grayscale data of a sub-pixel S whose display column number is "u" and display row number is "v".

[0110] Next, we will explain the operation of the drive circuit 11 when it acquires an image and displays it.

[0111] Figure 11 shows an example of an image acquired by the drive circuit 11 and the corresponding pixel data. The image is a red-only image, and when displayed in the display area DA, the red on the -X side of the X coordinate "x1" has lower brightness than the red on the +X side of the X coordinate "x1". Also, the red in the image has the same brightness in the Y direction. In other words, as you move along the X direction from the -X side to the +X side, the image becomes brighter with the X coordinate "x1" as the boundary.

[0112] The values ​​shown for the multiple pixels G in Figure 11 are the values ​​of the first tone data corresponding to the first color data of red contained in the pixel data. The tone data ranges from 0 to 1, and the larger the tone data, the greater the brightness. The first tone data on the -X side of the X coordinate "x1" is 0.1, and the first tone data on the +X side of the X coordinate "x1" is 0.9. In other words, as you move along the X direction from the -X side to the +X side, the first tone data switches from 0.1 to 0.9 at the X coordinate "x1".

[0113] Note that the second tone data corresponding to the second color data of green and the third tone data corresponding to the third color data of blue, both contained in the pixel data of the image in Figure 11, are all 0 (zero) (not shown).

[0114] Figure 12 shows the X-direction values ​​of the first grayscale data included in the pixel data corresponding to the image shown in Figure 11. The first grayscale data switches from 0.1 to 0.9 at the X coordinate "x1".

[0115] The drive circuit 11 performs the rendering process described above once it acquires pixel data.

[0116] Figure 13 shows an example of a value calculated when the drive circuit 11 performs rendering processing based on the pixel data shown in Figure 11. Similar to Figure 9, Figure 13 shows point S and multiple points G.

[0117] In Figure 13, one pixel G corresponding to the sub-pixel S of point S is the pixel G corresponding to points Gi and j. Therefore, the nine pixels G used to calculate the sub-grayscale data of the sub-pixel S of point S include point G ｉ，ｊ , point G ｉ－１，ｊ―１ , point G ｉ，ｊ－１ , point G ｉ＋１，ｊ－１ , point G ｉ－１，ｊ , point G ｉ＋１，ｊ , point G ｉ－１，ｊ＋１ , point G ｉ，ｊ＋１ , and point G ｉ＋１，ｊ＋１ The corresponding pixel G is selected.

[0118] Also, Figure 13 shows points S and G. ｉ，ｊ When the X-direction distance and Y-direction distance from the corresponding "S" are 0.3, the corresponding "S" for the nine pixels G ｎｏｒｍ (L ｓ，ｑ ) (Equation (7)) and "S (L ｓ，ｑ The value of (Equation (9)) is shown.

[0119] As mentioned above, "S (L ｓ，ｑ The equation (9) is a three-dimensional interpolation equation that derives a value of 0 or greater when the pixel distance is less than or equal to the first distance k1, and a value less than 0 (a negative value) when the pixel distance is greater than the first distance k1 and less than the second distance k2. Thus, the equation shown in parentheses (9) next to point G in Figure 13, "S(L ｓ，ｑ Regarding the value of (Equation (9)) ), point G where the pixel distance exceeds the first distance k1 ｉ＋１，ｊ－１ , point G ｉ＋１，ｊ , point G ｉ－１，ｊ＋１ , point G ｉ，ｊ＋１ , and point G ｉ＋１，ｊ＋１ For the corresponding pixel G, the value will be negative.

[0120] Also, in Figure 13, the "S" shown in parentheses (7) next to point G ｎｏｒｍ (L ｓ，ｑ Regarding the value of (Equation (7)) ), point G ｉ，ｊ In one pixel G corresponding to it, the value is greater than 1, and point G ｉ＋１，ｊ－１ , point G ｉ＋１，ｊ , point G ｉ－１，ｊ＋１ , point G ｉ，ｊ＋１ , and point G ｉ＋１，ｊ＋１ The corresponding pixel G will have a negative value.

[0121] Furthermore, the drive circuit 11 uses the pixel data of the image shown in Figure 11 and "S" based on equation (1). ｎｏｒｍ (L ｓ，ｑ The sub-tone data of multiple sub-pixels S is calculated using the value of (Equation (7))).

[0122] Figure 14 shows the sub-tone data values ​​of sub-pixels S when the drive circuit 11 performs rendering processing based on the pixel data corresponding to the image shown in Figure 11. In Figure 14, the value of the first sub-tone data of the first sub-pixel Sα is shown. The second sub-tone data of the green second sub-pixel Sβ and the third sub-tone data of the blue third sub-pixel Sγ are 0 (not shown).

[0123] Figure 15 shows the X-direction values ​​of the first sub-tone data shown in Figure 14. In Figure 15, the X-direction values ​​of the first sub-tone data in the rendering process of this embodiment are shown by solid lines. As described above, in the rendering process of this embodiment, "S(L ｓ，ｑ ) (Equation (9)) is a three-dimensional interpolation formula, and "S ｎｏｒｍ (L ｓ，ｑ Regarding the value of (7)) there are pixels G that are greater than 1 and pixels G that are negative. As a result, the first sub-tone data of the rendering process in this embodiment changes along the X direction from the -X side to the +X side, including an undershoot that is negative and an overshoot that is greater than 1 near the X coordinate "x1".

[0124] As a result, the rendering process of this embodiment is described next as "S(L ｓ，ｑ Compared to the rendering process of the comparative example where the interpolation method is linear, the change in the first sub-tone data can be brought closer to the change in the first tone data shown in Figure 12.

[0125] In the rendering process of the comparative example, some of the formulas differ from those of the rendering process of the embodiment described above. In the rendering process of the comparative example, formulas (10), (11), and (12) are used instead of formulas (1), (2), and (3) above.

[0126]

[0127]

[0128]

[0129] As shown in Equation (10), when the variable s has a value from “i ｐ ” to “i ｐ + 1”, and the variable q has a value from “j ｐ [[ID=I2]]” to “j ｐ + 1”, in order to calculate the sub - tone data (”SP （ｕ，ｖ） ”) of one sub - pixel S, the tone data (”P ｓ，ｑ ”) of four pixels G are selected. That is, the number of pixels G corresponding to “P ｓ，ｑ ” is four.

[0130] For example, when one pixel G corresponding to one sub - pixel S is the pixel G corresponding to the point G ｉ，ｊ shown in FIG. 9, for the four pixels G, the pixels G corresponding to the point G ｉ，ｊ , the point G ｉ＋１，ｊ , the point G ｉ，ｊ＋１ , and the point G ｉ＋１，ｊ＋１ are selected.

[0131] Also, in the rendering process of the comparative example, instead of the above - mentioned Equations (8) and (⑨), Equations (13) and (14) are used.

[0132] >

[0133]

[0134] The filter function of Equation (14) is a linear interpolation formula, which is shown by a broken line in FIG. 10. The filter function of Equation (14) derives a value of 0 or more when the pixel distance is less than or equal to the first distance k1, and derives 0 when the pixel distance is greater than or equal to the second distance k2.

[0135] FIG. 16 is a diagram showing the values of the sub - tone data of the sub - pixel S when the driving circuit 11 executes the rendering process of the comparative example based on the pixel data corresponding to the image shown in FIG. 11. In FIG. 16, the value of the first sub - tone data of the first sub - pixel Sα is shown. The second sub - tone data of the green second sub - pixel Sβ and the third sub - tone data of the blue third sub - pixel Sγ are 0 (not shown).

[0136] In Figure 15, the X-direction values ​​of the first sub-tone data in the rendering process of the comparative example are shown by a dashed line. The portion where the rendering process of the comparative example and the rendering process of this embodiment overlap regarding the X-direction values ​​of the first sub-tone data is shown by a solid line. As described above, in the rendering process of the comparative example, "S(L ｓ，ｑ The equation (4) is a linear interpolation equation. As a result, the first subtone data in the rendering process of the comparative example changes linearly in the vicinity of the X coordinate "x1" as you move along the X direction from the -X side to the +X side. Furthermore, regarding the degree of inclination of the first subtone data with respect to the X direction in the vicinity of the X coordinate "x1", the first subtone data in the rendering process of the comparative example is smaller than the first subtone data in the rendering process of the embodiment.

[0137] As described above, the first grayscale data shown in Figure 12 switches from 0.1 to 0.9 in the X direction, with the X coordinate "x1" as the boundary. Therefore, the smaller the degree of inclination of the first sub-grayscale data with respect to the X direction near the X coordinate "x1", the more blurred the image displayed in the display area DA becomes near the X coordinate "x1". In other words, in the rendering process of the comparative example, the image displayed in the display area DA near the X coordinate "x1" is blurred more than in the rendering process of the embodiment described above.

[0138] Thus, the rendering process of this embodiment can bring the change in the first sub-tone data closer to the change in the first tone data shown in Figure 12, compared to the rendering process of the comparative example. In other words, the display device 1 on which the rendering process of this embodiment is performed can achieve improved image quality.

[0139] Furthermore, in this embodiment, the rendering process uses a three-dimensional interpolation filter function as described above, and the drive circuit 11 can calculate sub-tone data by setting the number of pixels G corresponding to one sub-pixel S to 16 during the rendering process.

[0140] Specifically, in the rendering process of this embodiment, the variable s shown in equation (1) is "i ｐ -1" to "i ｐ The value is limited to "+2", and the variable q is set to "j ｐ -1" to "jｐ The value is set to "+2". Equation (9) is used as the filter function, which can improve image quality.

[0141] However, since there are 16 pixels G corresponding to one subpixel S, the calculation time is longer compared to the case where there are 9 pixels G corresponding to one subpixel S, as in the rendering process of this embodiment. Therefore, the display device 1 can achieve shorter rendering times and improved image quality.

[0142] As described above, the drive circuit 11 calculates the sub-grayscale data of the sub-pixel S through rendering processing, replaces sub-grayscale data less than 0 with 0, and replaces sub-grayscale data greater than 1 with 1. Furthermore, the drive circuit 11 displays the image in the display area DA based on the multiple sub-grayscale data.

[0143] <First Modification of the First Embodiment> Next, the first modification of the first embodiment will be described, mainly in terms of the parts that differ from the first embodiment described above. In this first modification, the configuration of the sub-pixel group CS and the configuration of the pixel group CG differ from the first embodiment described above. In addition, in this first modification, multiple sub-pixels S constitute one (one type) sub-pixel group CSaa.

[0144] Figure 17 is a plan view of a sub-pixel set CSa of a first modified example of the first embodiment. The sub-pixel set CSa is composed of 12 sub-pixels S along the first direction D1 and 6 sub-pixels S along the second direction D2 arranged in a matrix. In other words, in the sub-pixel set CSa, the number of first sub-pixels is 12 and the number of second sub-pixels is 6. In the sub-pixel set CSa, the sub-pixel S with set row number 0 and set column number 0 is the first sub-pixel Sα, and the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0145] Furthermore, in the pixel set CGa corresponding to the sub-pixel set CSa, the number of first pixels is 5, and the number of second pixels is 5. Therefore, in this first modified example, the value obtained by dividing the second sub-pixel number (6) by the second pixel number (5) is 1.2 (= 6 / 5), which is greater than 1 and less than or equal to 1.5. Also, the value obtained by dividing the first sub-pixel number (12) by the first pixel number (5) is 2.4 (= 12 / 5), which is greater than or equal to 2 and less than 3.

[0146] Furthermore, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the subpixel set CSa (total subpixel S) is the product of the number of first subpixels (12) and the number of second subpixels (6), which is 72 (= 12 × 6). On the other hand, the sum of the number of first-tone data, second-tone data, and third-tone data for the multiple pixels G constituting the pixel set CGa corresponding to the subpixel set CSa (total grayscale data) is the product of the number of first pixels (5), the number of second pixels (5), and the number of grayscale data points in the pixel G (3), which is 75 (= 5 × 5 × 3). Therefore, the ratio of grayscale data (75) to the total subpixel S (72) is 1.04 (= 75 / 72), which is between 0.9 and 1.1.

[0147] Furthermore, in this first modified example, in the display area DA, multiple subpixels S are arranged in the mosaic arrangement described above, so that multiple subpixel sets CSa are arranged in a matrix along the first direction D1 and the second direction D2, respectively.

[0148] <Second Modification of the First Embodiment> Next, we will describe the second modification of the first embodiment, focusing on the differences from the first embodiment described above. This second modification differs from the first embodiment in the configuration of the sub-pixel group CS and the pixel group CG.

[0149] Figure 18 is a plan view of the first subpixel set CSb1 of a second modification of the first embodiment. The first subpixel set CSb1 is composed of 12 subpixels S along the first direction D1 and 5 subpixels S along the second direction D2 arranged in a matrix. In other words, in the first subpixel set CSb1, the number of first subpixels is 12 and the number of second subpixels is 5. In the first subpixel set CSb1, the subpixel S with row number 0 and column number 0 is the first subpixel Sα, and the first subpixel Sα, second subpixel Sβ, and third subpixel Sγ are arranged in the mosaic arrangement described above.

[0150] Furthermore, in the pixel set CGb corresponding to the first sub-pixel set CSb1, the first pixel count is 5 and the second pixel count is 4. Therefore, in this second modified example, the value obtained by dividing the second sub-pixel count (5) by the second pixel count (4) is 1.25 (= 5 / 4), which is greater than 1 and less than or equal to 1.5. Also, the value obtained by dividing the first sub-pixel count (12) by the first pixel count (5) is 2.4 (= 12 / 5), which is greater than or equal to 2 and less than 3.

[0151] Furthermore, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the first subpixel set CSb1 (total subpixel S) is the product of the number of first subpixels (12) and the number of second subpixels (5), which is 60 (= 12 × 5). On the other hand, the sum of the number of first-tone data, second-tone data, and third-tone data for the multiple pixels G constituting the pixel set CGb corresponding to the first subpixel set CSb1 (total grayscale data) is the product of the number of first pixels (5), the number of second pixels (4), and the number of grayscale data points in pixels G (3), which is 60 (= 5 × 4 × 3). Therefore, the ratio of grayscale data (60) to the sum of subpixels S (60) is 1 (= 60 / 60), which is between 0.9 and 1.1.

[0152] Furthermore, the second sub-pixel set (not shown) of this second modified example differs from the first sub-pixel set CSb1 described above only in the arrangement of the sub-pixels S. Specifically, in the second sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSb1 is replaced by the second sub-pixel Sβ, the second sub-pixel Sβ of the first sub-pixel set CSb1 is replaced by the third sub-pixel Sγ, and the third sub-pixel Sγ of the first sub-pixel set CSb1 is replaced by the first sub-pixel Sα. In other words, in the second sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the second sub-pixel Sβ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0153] Furthermore, the third sub-pixel set (not shown) of this second modified example differs from the first sub-pixel set CSb1 described above only in the arrangement of the sub-pixels S. Specifically, in the third sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSb1 is replaced by the third sub-pixel Sγ, the second sub-pixel Sβ of the first sub-pixel set CSb1 is replaced by the first sub-pixel Sα, and the third sub-pixel Sγ of the first sub-pixel set CSb1 is replaced by the second sub-pixel Sβ. In other words, in the third sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0154] Furthermore, in the display area DA, when multiple subpixels S are arranged in the mosaic arrangement described above, the multiple subpixel sets CSb are arranged in a first row along the first direction D1, a second row along the first direction D1, a third row along the first direction D1, and so on, repeatedly along the second direction D2 in this order.

[0155] <Third Modification of the First Embodiment> Next, the third modification of the first embodiment will be described, mainly in terms of the parts that differ from the first embodiment described above. In this third modification, the configuration of the sub-pixel set CS and the configuration of the pixel set CG differ from the first embodiment described above.

[0156] Figure 19 is a plan view of the first subpixel set CSc1 of the third modified example of the first embodiment. The first subpixel set CSc1 is composed of five subpixels S along the first direction D1 and six subpixels S along the second direction D2 arranged in a matrix. In other words, the first subpixel set CSc1 has five first subpixels and six second subpixels. In the first subpixel set CSc1, the subpixel S with row number 0 and column number 0 is the first subpixel Sα, and the first subpixel Sα, second subpixel Sβ, and third subpixel Sγ are arranged in the mosaic arrangement described above.

[0157] Furthermore, in the pixel set CGc corresponding to the first sub-pixel set CSc1, the number of first pixels is 2 and the number of second pixels is 5. Therefore, in this third modified example, the value obtained by dividing the number of second sub-pixels (6) by the number of second pixels (5) is 1.2 (= 6 / 5), which is greater than 1 and less than or equal to 1.5. Also, the value obtained by dividing the number of first sub-pixels (5) by the number of first pixels (2) is 2.5 (= 5 / 2), which is greater than or equal to 2 and less than 3.

[0158] Furthermore, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the first subpixel set CSc1 (total subpixel S) is the product of the number of first subpixels (5) and the number of second subpixels (6), which is 30 (= 5 × 6). On the other hand, the sum of the number of first tone data, second tone data, and third tone data in the multiple pixels G constituting the pixel set CGc corresponding to the first subpixel set CSc1 (total tone data) is the product of the number of first pixels (2) and the number of second pixels (5) and the number of tone data in pixels G (3), which is 30 (= 2 × 5 × 3). Therefore, the ratio of tone data (30) to the total subpixel S (30) is 1 (= 30 / 30), which is between 0.9 and 1.1.

[0159] Furthermore, the second sub-pixel set (not shown) differs from the first sub-pixel set CSc1 described above only in the arrangement of the sub-pixels S. Specifically, in the second sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSc1 is replaced by the third sub-pixel Sγ, the second sub-pixel Sβ of the first sub-pixel set CSc1 is replaced by the first sub-pixel Sα, and the third sub-pixel Sγ of the first sub-pixel set CSc1 is replaced by the second sub-pixel Sβ. In other words, in the second sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0160] Furthermore, the third sub-pixel set (not shown) differs from the first sub-pixel set CSc1 described above only in the arrangement of the sub-pixels S. Specifically, in the third sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSc1 is replaced by the second sub-pixel Sβ, the second sub-pixel Sβ of the first sub-pixel set CSc1 is replaced by the third sub-pixel Sγ, and the third sub-pixel Sγ of the first sub-pixel set CSc1 is replaced by the first sub-pixel Sα. In other words, in the third sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the second sub-pixel Sβ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0161] Furthermore, in the display area DA, when multiple subpixels S are arranged in the mosaic arrangement described above, the multiple subpixel sets CSc are arranged in a first column along the second direction D2 in which the first subpixel set CSc1 is lined up, a second column along the second direction D2 in which the second subpixel set is lined up, and a third column along the second direction D2 in which the third subpixel set is lined up, in this order, repeatedly along the first direction D1.

[0162] <Fourth Modification of the First Embodiment> Next, the fourth modification of the first embodiment will be described, mainly in terms of the parts that differ from the first embodiment described above. This fourth modification differs from the first embodiment described above in the configuration of the sub-pixel set CS and the configuration of the pixel set CG.

[0163] Figure 20 is a plan view of the first subpixel set CSd1 of the fourth modified example of the first embodiment. The first subpixel set CSd1 is composed of seven subpixels S along the first direction D1 and four subpixels S along the second direction D2 arranged in a matrix. In other words, in the first subpixel set CSd1, the number of first subpixels is 7 and the number of second subpixels is 4. In the first subpixel set CSd1, the subpixel S with set row number 0 and set column number 0 is the first subpixel Sα, and the first subpixel Sα, the second subpixel Sβ, and the third subpixel Sγ are arranged in the mosaic arrangement described above.

[0164] Furthermore, in the pixel set CGd corresponding to the first sub-pixel set CSd1, the number of first pixels is 3 and the number of second pixels is 3. Therefore, in this fourth modification, the value obtained by dividing the second sub-pixel number (4) by the second pixel number (3) is 1.33 (= 4 / 3), which is greater than 1 and less than or equal to 1.5. Also, the value obtained by dividing the first sub-pixel number (7) by the first pixel number (3) is 2.3 (= 7 / 3), which is greater than or equal to 2 and less than 3.

[0165] Furthermore, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the first subpixel group CSd1 (total subpixel S) is the product of the number of first subpixels (7) and the number of second subpixels (4), which is 28 (= 7 × 4). On the other hand, the sum of the number of first-tone data, second-tone data, and third-tone data in the multiple pixels G constituting the pixel group CGd corresponding to the first subpixel group CSd1 (total grayscale data) is the product of the number of first pixels (3), the number of second pixels (3), and the number of grayscale data in pixels G (3), which is 27 (= 3 × 3 × 3). Therefore, the ratio of grayscale data (27) to the sum of subpixel S (28) is 0.96 (= 27 / 28), which is between 0.9 and 1.1.

[0166] Furthermore, the second sub-pixel set (not shown) differs from the first sub-pixel set CSd1 above only in the arrangement of the sub-pixels S. Specifically, in the second sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSd1 is replaced by the second sub-pixel Sβ, the second sub-pixel Sβ of the first sub-pixel set CSd1 is replaced by the third sub-pixel Sγ, and the third sub-pixel Sγ of the first sub-pixel set CSd1 is replaced by the first sub-pixel Sα. In other words, in the second sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the second sub-pixel Sβ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0167] Furthermore, the third sub-pixel set (not shown) differs from the first sub-pixel set CSd1 described above only in the arrangement of the sub-pixels S. Specifically, in the third sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSd1 is replaced by the third sub-pixel Sγ, the second sub-pixel Sβ of the first sub-pixel set CSd1 is replaced by the first sub-pixel Sα, and the third sub-pixel Sγ of the first sub-pixel set CSd1 is replaced by the second sub-pixel Sβ. In other words, in the third sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0168] Furthermore, in the display area DA, when multiple subpixels S are arranged in the mosaic arrangement described above, the multiple subpixel sets CSd are arranged in the order of a first subpixel set CSd1, a second subpixel set, and a third subpixel set repeatedly along the first direction D1, and in the order of a first subpixel set CSd1, a third subpixel set, and a second subpixel set repeatedly along the second direction D2.

[0169] <Fifth Modification of the First Embodiment> Next, the fifth modification of the first embodiment will be described, mainly in terms of the parts that differ from the first embodiment described above. In this fifth modification, the configuration of the sub-pixel set CS and the configuration of the pixel set CG differ from the first embodiment described above.

[0170] Figure 21 is a plan view of the first subpixel set CSe1 of the fifth modified example of the first embodiment. The first subpixel set CSe1 is composed of nine subpixels S along the first direction D1 and four subpixels S along the second direction D2 arranged in a matrix. In other words, the first subpixel set CSe1 has nine first subpixels and four second subpixels. In the first subpixel set CSe1, the subpixel S with row number 0 and column number 0 is the first subpixel Sα, and the first subpixel Sα, second subpixel Sβ, and third subpixel Sγ are arranged in the mosaic arrangement described above.

[0171] Furthermore, in the pixel set CGe corresponding to the first sub-pixel set CSe1, the number of first pixels is 4 and the number of second pixels is 3. Therefore, in this fifth modification, the value obtained by dividing the number of second sub-pixels (4) by the number of second pixels (3) is 1.33 (= 4 / 3), which is greater than 1 and less than or equal to 1.5. Also, the value obtained by dividing the number of first sub-pixels (9) by the number of first pixels (4) is 2.25 (= 9 / 4), which is greater than or equal to 2 and less than 3.

[0172] Furthermore, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the first subpixel group CSe1 (total subpixel S) is the product of the number of first subpixels (9) and the number of second subpixels (4), which is 36 (= 9 × 4). On the other hand, the sum of the number of first-tone data, second-tone data, and third-tone data in the multiple pixels G constituting the pixel group CGe corresponding to the first subpixel group CSe1 (total grayscale data) is the product of the number of first pixels (4), the number of second pixels (3), and the number of grayscale data in pixels G (3), which is 36 (= 4 × 3 × 3). Therefore, the ratio of grayscale data (36) to the sum of subpixels S (36) is 1.0 (= 36 / 36), which is between 0.9 and 1.1.

[0173] Furthermore, the second sub-pixel set (not shown) differs from the first sub-pixel set CSe1 described above only in the arrangement of the sub-pixels S. Specifically, in the second sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSe1 is replaced by the third sub-pixel Sγ, the second sub-pixel Sβ of the first sub-pixel set CSe1 is replaced by the first sub-pixel Sα, and the third sub-pixel Sγ of the first sub-pixel set CSe1 is replaced by the second sub-pixel Sβ. In other words, in the second sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0174] Furthermore, the third sub-pixel set (not shown) differs from the first sub-pixel set CSe1 described above only in the arrangement of the sub-pixels S. Specifically, in the third sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSe1 is replaced by the second sub-pixel Sβ, the second sub-pixel Sβ of the first sub-pixel set CSe1 is replaced by the third sub-pixel Sγ, and the third sub-pixel Sγ of the first sub-pixel set CSe1 is replaced by the first sub-pixel Sα. In other words, in the third sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0175] Furthermore, in the display area DA, when multiple subpixels S are arranged in the mosaic arrangement described above, the multiple subpixel sets CSe are arranged in a first row along the first direction D1, a second row along the first direction D1, a third row along the first direction D1, and so on, repeatedly along the second direction D2 in this order.

[0176] <Sixth Modification of the First Embodiment> Next, the sixth modification of the first embodiment will be described, mainly in terms of the parts that differ from the first embodiment described above. This sixth modification differs from the first embodiment described above in the configuration of the sub-pixel set CS and the configuration of the pixel set CG.

[0177] Figure 22 is a plan view of the first subpixel set CSf1 of the sixth modified example of the first embodiment. The first subpixel set CSf1 is composed of five subpixels S along the first direction D1 and five subpixels S along the second direction D2 arranged in a matrix. That is, in the first subpixel set CSb1, the number of first subpixels is 5 and the number of second subpixels is 5. In the first subpixel set CSf1, the subpixel S with row number 0 and column number 0 is the first subpixel Sα, and the first subpixel Sα, second subpixel Sβ, and third subpixel Sγ are arranged in the mosaic arrangement described above.

[0178] Furthermore, in the pixel set CGf corresponding to the first sub-pixel set CSf1, the number of first pixels is 2 and the number of second pixels is 4. Therefore, in this second modification, the value obtained by dividing the second sub-pixel number (5) by the second pixel number (4) is 1.25 (= 5 / 4), which is greater than 1 and less than or equal to 1.5. Also, the value obtained by dividing the first sub-pixel number (5) by the first pixel number (2) is 2.5 (= 5 / 2), which is greater than or equal to 2 and less than 3.

[0179] Furthermore, the sum of the number of first subpixels Sα, second subpixels Sβ, and third subpixels Sγ in the first subpixel set CSf1 (total subpixel S) is the product of the number of first subpixels (5) and the number of second subpixels (5), which is 25 (= 5 × 5). On the other hand, the sum of the number of first tone data, second tone data, and third tone data for the multiple pixels G constituting the pixel set CGf corresponding to the first subpixel set CSf1 (total tone data) is the product of the number of first pixels (2), the number of second pixels (4), and the number of tone data points in pixels G (3), which is 24 (= 2 × 4 × 3). Therefore, the ratio of tone data (24) to the sum of subpixels S (25) is 0.96 (= 24 / 25), which is between 0.9 and 1.1.

[0180] Furthermore, the second sub-pixel set (not shown) of this second modified example differs from the first sub-pixel set CSf1 described above only in the arrangement of the sub-pixels S. Specifically, in the second sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSf1 is replaced by the second sub-pixel Sβ, the second sub-pixel Sβ of the first sub-pixel set CSf1 is replaced by the third sub-pixel Sγ, and the third sub-pixel Sγ of the first sub-pixel set CSb1 is replaced by the first sub-pixel Sα. In other words, in the second sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the second sub-pixel Sβ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0181] Furthermore, the third sub-pixel set (not shown) of this second modified example differs from the first sub-pixel set CSf1 described above only in the arrangement of the sub-pixels S. Specifically, in the third sub-pixel set, the first sub-pixel Sα of the first sub-pixel set CSf1 is replaced by the third sub-pixel Sγ, the second sub-pixel Sβ of the first sub-pixel set CSf1 is replaced by the first sub-pixel Sα, and the third sub-pixel Sγ of the first sub-pixel set CSf1 is replaced by the second sub-pixel Sβ. In other words, in the third sub-pixel set, the sub-pixel S with set row number 0 and set column number 0 is the third sub-pixel Sγ, and the first sub-pixel Sα, second sub-pixel Sβ, and third sub-pixel Sγ are arranged in the mosaic arrangement described above.

[0182] Furthermore, in the display area DA, when multiple subpixels S are arranged in the mosaic arrangement described above, the multiple subpixel sets CSf are arranged in the order of a first subpixel set CSf1, a second subpixel set, and a third subpixel set repeatedly along the first direction D1, and in the order of a first subpixel set CSf1, a third subpixel set, and a second subpixel set repeatedly along the second direction D2.

[0183] <Seventh Modification of the First Embodiment> Next, we will describe the seventh modification of the first embodiment, focusing on the parts that differ from the first embodiment described above.

[0184] In this seventh modification, in order to calculate the sub-grayscale data ("SP(u,v)") of one sub-pixel S, the grayscale data ("P") of five pixels G are used. ｓ，ｑ ) is selected.

[0185] Specifically, from equations (1), (2), (3), (4), (5), s = i ｐ and q = j ｐ In this case, similar to the first embodiment described above, one pixel G corresponding to one sub-pixel S is selected from among the multiple pixels G.

[0186] Furthermore, of the five pixels G, four pixels G are selected that are adjacent to the one pixel G, excluding one pixel G. Specifically, four pixels G are selected from the multiple pixels G, including two pixels G adjacent to the one pixel G in the first direction D1 and two pixels G adjacent to the one pixel G in the second direction D2.

[0187] For example, one pixel G corresponding to one subpixel S is point G shown in Figure 9. ｉ，ｊ If the pixel G corresponds to a point G, then the four pixels G have point G ｉ－１，ｊ , point G ｉ＋１，ｊ , point G ｉ，ｊ－１ , and point G ｉ，ｊ＋１ The corresponding pixel G is selected.

[0188] The drive circuit 11 calculates sub-grayscale data indicating the grayscale of one sub-pixel S based on the pixel data of one pixel G and four pixels G.

[0189] In the seventh modified display device 1, the rendering process can be shortened compared to the display device 1 of the first embodiment described above.

[0190] <Second Embodiment> Next, the second embodiment of the present disclosure will be described, primarily in terms of the differences from the sixth modified example of the first embodiment described above.

[0191] Figure 23 is a plan view of a display panel 10 showing the arrangement of a plurality of subpixel sets CSg according to the second embodiment of this disclosure.

[0192] In the display device 1 according to the second embodiment, compared to the first embodiment described above, the first direction D1 is inclined with respect to the second direction D2. Specifically, the first direction D1 is inclined with respect to the X direction and the Y direction. The first direction D1 is parallel to the dashed line L1a, whose angle with the dashed line L1b, which is parallel to the X direction in a plan view, is an inclination angle θg. The second direction D2 is parallel to the Y direction, similar to the first embodiment described above. In this second embodiment, the X direction corresponds to the "third direction".

[0193] The tilt angle θg is defined as an angle such that tanθg = A × (1 / number of first pixels) (where A is a rational number). Figure 23 shows the case where A = 1. When A = 1, and the number of first pixels is "2", as in the first embodiment described above, tanθg = 1 / 2 and the tilt angle θg = 26.6°.

[0194] Multiple subpixels S are arranged in a matrix along the first direction D1 and the second direction D2, respectively, as in the first embodiment described above. The subpixels S have a parallelogram shape in plan view. The arrangement of subpixels S is a mosaic arrangement, as in the first embodiment described above. In the display area DA, multiple subpixel sets CSg are arranged along the first direction D1 and the second direction D2, respectively. In the subpixel set CSg, the number of first subpixels is 5, and the number of second subpixels is 5, as in the sixth modification of the first embodiment described above.

[0195] As described above, by determining the inclination angle θg, the multiple pixel sets CGg corresponding to the multiple sub-pixel sets CSg will, as will be described later, not overlap each other in the display area DA and will be arranged without gaps along the first direction D1 and the second direction D2. In addition, for two sub-pixel sets CSg that are adjacent to each other in the first direction D1, the distance B in the Y direction between multiple sub-pixels S that correspond to the same set number among the multiple sub-pixels S arranged in the same row along the first direction D1 will be A times the Y-direction length of the pixel G (=1).

[0196] Figure 24 is a diagram showing the positional relationship between a plurality of sub-pixel sets CSg and a plurality of pixel sets CGg according to the second embodiment of the present disclosure. Similar to the first embodiment described above, the plurality of pixels G are arranged in a matrix along the X and Y directions, and the number of first pixels in the pixel set CGg is 2, and the number of second pixels is 4.

[0197] The X-direction length of the pixel set CGg is equal to the X-direction length of the sub-pixel set CSg. Also, the Y-direction lengths of the -X side and +X side of the pixel set CGg are equal to the Y-direction lengths of the -X side and +X side of the sub-pixel set CSg.

[0198] Multiple pixel sets CGg are arranged such that the -X side of the pixel set CGg coincides with the -X side of the sub-pixel set CSg. With this arrangement, the multiple pixel sets CGg do not overlap within the display area DA and are arranged without gaps along both the first direction D1 and the second direction D2. Furthermore, a pixel set CGg corresponding to a sub-pixel set CSg has a -X side that coincides with the -X side of the sub-pixel set CSg.

[0199] Figure 25 shows the circuit configuration of the display panel 10 according to the second embodiment. In this second embodiment, since the multiple subpixels S are arranged along the first direction D1 as described above, the scan lines Lc are also arranged along the first direction D1. In other words, the scan lines Lc of this second embodiment are arranged at an angle with respect to the X and Y directions. As a result, the scan lines Lc of this second embodiment are also arranged on the +Y and -Y sides of the display area DA.

[0200] On the other hand, the scan lines Lc of the first embodiment described above are arranged along the X direction, as shown in Figure 2, and unlike the scan lines Lc of this second embodiment, they are not arranged on the +Y side and -Y side of the display area DA. As a result, the number of scan lines Lc of this second embodiment shown in Figure 25 is increased compared to the scan lines Lc of the first embodiment described above. This is also true when the arrangement of multiple sub-pixels S is a stripe pixel arrangement.

[0201] Furthermore, in the generation of sub-tone data using equation (1), the Y coordinate of the sub-pixel S is calculated by equation (15) instead of equation (5). In equation (15), "v ０ This value indicates the display row number of the reference subpixel S, for example, it is 1.

[0202]

[0203] According to this, the display device 1 of this second embodiment can achieve shorter rendering times and improved image quality, similar to the first embodiment, even if the first direction D1 is inclined with respect to the X and Y directions.

[0204] <First Modification of the Second Embodiment> Next, we will describe the first modification of the second embodiment, focusing on the parts that differ from the second embodiment described above.

[0205] Figure 26 is a plan view of a display panel 10 showing the arrangement of a plurality of sub-pixel sets CSh according to a first modified example of the second embodiment.

[0206] In the display device 1 according to this first modification, the magnitude of the inclination angle θg is different from that of the second embodiment described above. The first direction D1 is parallel to the dashed line L2a, whose angle with the dashed line L2b, which is parallel to the X direction in a plan view, is the inclination angle θg. Similar to the second embodiment described above, the second direction D2 is parallel to the Y direction, and the X direction corresponds to the "third direction".

[0207] In this first modified example, the inclination angle θg is defined as an angle such that tanθg = A × (number of second pixels / (number of first pixels × number of second sub-pixels)) (where A is a rational number). Figure 26 shows the case where A = 1 / 2. When A = 1 / 2, similar to the sixth modified example of the first embodiment described above, when the number of second pixels is "4", the number of first pixels is "2", and the number of second sub-pixels is "5", tanθg = 1 / 5 and the inclination angle θg = 11.3°.

[0208] Similar to the second embodiment described above, the multiple subpixels S are arranged in a matrix along the first direction D1 and the second direction D2, respectively, and the arrangement of the subpixels S is a mosaic arrangement.

[0209] Furthermore, in the display area DA, multiple sub-pixel sets CSh are arranged along the first direction D1 and the second direction D2, respectively. In the sub-pixel set CSh, similar to the sixth modification of the first embodiment described above, the number of first sub-pixels is 5 and the number of second sub-pixels is 5.

[0210] As described above, by determining the inclination angle θg, the multiple pixel sets CGh corresponding to the multiple sub-pixel sets CSh will, as will be described later, not overlap each other in the display area DA and will be arranged without gaps along the first direction D1 and the second direction D2. In two sub-pixel sets CSh that are adjacent to each other in the first direction D1, the distance B in the Y direction between multiple sub-pixels S that correspond to the same set number among the multiple sub-pixels S arranged in the same row along the first direction D1 will be A × (number of second pixels / number of second sub-pixels) times the Y-direction length of the pixel G (=1).

[0211] Figure 27 is a diagram showing the positional relationship between a plurality of sub-pixel sets CSh and a plurality of pixel sets CGh according to a first modification of the second embodiment of the present disclosure. Similar to the second embodiment described above, the plurality of pixels G are arranged in a matrix along the X and Y directions, and in the pixel set CGh, the number of first pixels is 2 and the number of second pixels is 4.

[0212] The X-direction length of the pixel group CGh is equal to the X-direction length of the sub-pixel group CSh. Also, the Y-direction lengths of the -X side and +X side of the pixel group CGh are equal to the Y-direction lengths of the -X side and +X side of the sub-pixel group CSh.

[0213] Multiple pixel sets CGh are arranged such that the -X side of one pixel set CGh coincides with the -X side of the sub-pixel set CSh. This arrangement ensures that, within the display area DA, the multiple pixel sets CGh do not overlap and are aligned seamlessly along the first direction D1 and the second direction D2. Furthermore, a pixel set CGh corresponding to a sub-pixel set CSh has an edge that coincides with the -X side of the sub-pixel set CSh.

[0214] The display device 1 of this first modified example can achieve shorter rendering times and improved image quality, similar to the second embodiment described above.

[0215] <Second Modification of the Second Embodiment> Next, we will describe the second modification of the second embodiment, focusing on the parts that differ mainly from the sixth modification of the first embodiment described above.

[0216] Figure 28 is a plan view of a display panel 10 showing an arrangement of a plurality of sub-pixel sets CSi according to a second modification of the second embodiment of the present disclosure.

[0217] In the display device 1 according to this second modification, the second direction D2 is inclined with respect to the first direction D1, compared to the sixth modification of the first embodiment described above. Specifically, the second direction D2 is inclined with respect to the X and Y directions. The second direction D2 is parallel to the dashed line L3a, whose angle with the dashed line L3b, which is parallel to the Y direction in a plan view, is an inclination angle θg. The first direction D1 is parallel to the X direction, as in the first embodiment described above. In this second modification, the Y direction corresponds to the "third direction".

[0218] In this second modification, the tilt angle θg is set to a value such that tanθg = A × (1 / number of second pixels) (where A is a rational number). Figure 28 shows the case where A = 1. When A = 1, and the number of second pixels is "4", as in the first embodiment described above, tanθg = 1 / 4 and the tilt angle θg = 14.0°.

[0219] Multiple subpixels S are arranged in a matrix along the first direction D1 and the second direction D2, respectively. The arrangement of subpixels S is a mosaic arrangement, similar to that of the first embodiment described above. In the display area DA, multiple subpixel sets CSi are arranged along the first direction D1 and the second direction D2, respectively. In the subpixel set CSi, similar to the sixth modification of the first embodiment described above, the number of first subpixels is 5 and the number of second subpixels is 5.

[0220] As described above, by determining the inclination angle θg, the multiple pixel sets CGi corresponding to the multiple sub-pixel sets CSi will be arranged without overlapping in the display area DA, without gaps along the first direction D1 and the second direction D2, respectively, as will be described later. In addition, for two sub-pixel sets CSi that are adjacent to each other in the second direction D2, the distance C in the X direction between multiple sub-pixels S that correspond to the same set row number among the multiple sub-pixels S arranged in the same column along the second direction D2 will be A times the X-direction length of the pixel G (=1).

[0221] Figure 29 is a diagram showing the positional relationship between a plurality of sub-pixel sets CSi and a plurality of pixel sets CGi according to a second modification of the second embodiment of the present disclosure. Similar to the sixth modification of the first embodiment described above, the plurality of pixels G are arranged in a matrix along the X and Y directions, and in the pixel set CGi, the number of first pixels is 2 and the number of second pixels is 4.

[0222] The X-direction lengths of the -Y side and +Y side of the pixel assembly CGi are equal to the X-direction lengths of the -Y side and +Y side of the sub-pixel assembly CSi. Also, the Y-direction length of the pixel assembly CGi is equal to the Y-direction length of the sub-pixel assembly CSi.

[0223] Multiple pixel sets CGi are arranged such that the -Y side of the pixel set CGi coincides with the -Y side of the sub-pixel set CSi. With this arrangement, the multiple pixel sets CGi do not overlap with each other in the display area DA, and are arranged without gaps along both the first direction D1 and the second direction D2. Furthermore, a pixel set CGi corresponding to a sub-pixel set CSi has a -Y side that coincides with the -Y side of the sub-pixel set CSi.

[0224] Furthermore, since multiple sub-pixels S are arranged along the second direction D2 as described above, the signal line Lb is also arranged along the second direction D2. In other words, the signal line Lb in this third modification is arranged at an angle with respect to the X and Y directions. As a result, the signal line Lb in this second modification is also arranged on the +X and -X sides of the display area DA.

[0225] On the other hand, the signal line Lb in the first embodiment described above is arranged along the Y direction, as shown in Figure 2, and unlike the signal line Lb in this second modification, it is not arranged on the +X side and -X side of the display area DA. As a result, the number of signal lines Lb in this second modification increases compared to the signal line Lb in the first embodiment described above. This is also true when the arrangement of multiple sub-pixels S is a stripe pixel arrangement.

[0226] Furthermore, in the generation of sub-tone data using equation (1), the X coordinate of the sub-pixel S is calculated by equation (16) instead of equation (5). In equation (16), "u ０This value indicates the display column number of the reference subpixel S, for example, it is 1.

[0227]

[0228] According to this, the display device 1 of this second modified example can achieve the same reduction in rendering time and improvement in image quality as the first embodiment, even if the second direction D2 is inclined with respect to the X and Y directions.

[0229] <Third Modification of the Second Embodiment> Next, we will describe the third modification of the second embodiment, focusing on the differences between it and the second modification of the second embodiment described above.

[0230] Figure 30 is a plan view of a display panel 10 showing an arrangement of a plurality of sub-pixel sets CSj according to a third modification of the second embodiment of the present disclosure.

[0231] In the display device 1 according to this third modification, the magnitude of the inclination angle θg is different compared to the second modification of the second embodiment described above. The second direction D2 is parallel to the dashed line L4a, whose angle with the dashed line L4b, which is parallel to the Y direction in a plan view, is the inclination angle θg. Similar to the second modification of the second embodiment described above, the first direction D1 is parallel to the X direction, and the Y direction corresponds to the "third direction".

[0232] The tilt angle θg is defined as the angle tanθg = A × (number of first pixels / (number of second pixels × number of first sub-pixels)) (where A is a rational number). Figure 30 shows the case where A = 2. When A = 2, similar to the sixth modification of the first embodiment described above, when the number of first pixels is "2", the number of second pixels is "4", and the number of first sub-pixels is "5", then tanθg = 1 / 5 and the tilt angle θg = 11.3°.

[0233] Similar to the second embodiment described above, the multiple subpixels S are arranged in a matrix along the first direction D1 and the second direction D2, respectively, and the arrangement of the subpixels S is a mosaic arrangement.

[0234] Furthermore, in the display area DA, multiple sub-pixel sets CSj are arranged along the first direction D1 and the second direction D2, respectively. In the sub-pixel sets CSj, similar to the sixth modification of the first embodiment described above, the number of first sub-pixels is 5 and the number of second sub-pixels is 5.

[0235] As described above, by determining the inclination angle θg, the multiple pixel sets CGj corresponding to the multiple sub-pixel sets CSj will, as will be described later, not overlap each other in the display area DA and will be arranged without gaps along the first direction D1 and the second direction D2. In two sub-pixel sets CSj that are adjacent to each other in the second direction D2, the distance C in the X direction between multiple sub-pixels S that correspond to the same set row number among the multiple sub-pixels S arranged in the same column along the second direction D2 will be A × (number of first pixels / number of first sub-pixels) times the X-direction length of the pixel G (=1).

[0236] Figure 31 is a diagram showing the positional relationship between a plurality of sub-pixel sets CSj and a plurality of pixel sets CGj according to a third modification of the second embodiment of the present disclosure. Similar to the second embodiment described above, the plurality of pixels G are arranged in a matrix along the X and Y directions, and in the pixel set CGj, the number of first pixels is 2 and the number of second pixels is 4.

[0237] The X-direction lengths of the -Y side and +Y side of the pixel set CGj are equal to the X-direction lengths of the -Y side and +Y side of the sub-pixel set CSj. Also, the Y-direction length of the pixel set CGj is equal to the Y-direction length of the sub-pixel set CSj.

[0238] Multiple pixel sets CGj are arranged such that the -Y side of the pixel set CGj coincides with the -Y side of the sub-pixel set CSj. With the pixel sets CGj arranged in this way, the multiple pixel sets CGj do not overlap with each other in the display area DA and are arranged without gaps along the first direction D1 and the second direction D2. Furthermore, the pixel set CGj corresponding to the sub-pixel set CSj is a pixel set CGj that has a -Y side that coincides with the -Y side of the sub-pixel set CSj.

[0239] The display device 1 of this third modified example can achieve shorter rendering times and improved image quality, similar to the second modified example of the second embodiment described above.

[0240] While preferred embodiments of this disclosure have been described above, this disclosure is not limited to such embodiments. The content disclosed in the embodiments is merely an example, and various modifications are possible without departing from the spirit of this disclosure. Any modifications made without departing from the spirit of this disclosure will naturally fall within the technical scope of this disclosure.

[0241] For example, the display panel 10 described above may be a vertical electric field type liquid crystal display in which a common electrode CE is arranged on the second substrate 14 so as to face a plurality of sub-pixel electrodes PE. Alternatively, the display panel 10 may be a reflective type liquid crystal display.

[0242] Furthermore, the arrangement of multiple first subpixels Sα, multiple second subpixels Sβ, and multiple third subpixels Sγ in the display area DA may also be a Delta2 arrangement. Specifically, in a Delta2 arrangement, the first subpixels Sα, second subpixels Sβ, and third subpixels Sγ are repeatedly arranged in this order along the X direction. Also, a first column in which first subpixels Sα and third subpixels Sγ are alternately arranged along the Y direction, a second column in which second subpixels Sβ and first subpixels Sα are alternately arranged along the Y direction, and a third column in which third subpixels Sγ and second subpixels Sβ are alternately arranged along the Y direction are repeatedly arranged in this order along the X direction. Needless to say, the arrangement of multiple first subpixels Sα, multiple second subpixels Sβ, and multiple third subpixels Sγ in the display area DA is not limited to the mosaic arrangement and Delta2 arrangement described above.

[0243] Furthermore, any other effects and advantages brought about by the embodiments described herein that are obvious from this specification or that can be appropriately conceived by those skilled in the art are naturally provided by this disclosure.

[0244] The drive circuit 11 is a computer, and includes, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), internal storage, an input interface, and an output interface. The CPU, ROM, RAM, and internal storage are connected by an internal bus. The ROM stores programs such as the BIOS. The internal storage is, for example, an HDD (Hard Disk Drive) or flash memory, and stores operating system programs and application programs. The CPU realizes various functions by executing programs stored in the ROM or internal storage while using the RAM as a work area.

[0245] 1 Display device 10 Display panel 11 Driving circuit CG Pixel set CS Sub-pixel set D1 First direction D2 Second direction DA Display area G Pixel k1 First distance k2 Second distance S Sub-pixel Sα First sub-pixel Sβ Second sub-pixel Sγ Third sub-pixel

Claims

1. A display area for displaying an image comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction, respectively, which are mutually orthogonal to each other, and a drive circuit that drives the plurality of subpixels based on pixel data having information about the plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more subpixels with a first subpixel number along the first direction and two or more subpixels with a second subpixel number along the second direction are arranged in a matrix, the plurality of pixels are arranged in a matrix along the first direction and the second direction, the subpixel sets correspond to pixel sets in which one or more pixels with a first subpixel number along the first direction and two or more pixels with a second subpixel number along the second direction are arranged in a matrix, the subpixels have a first subpixel, a second subpixel and a third subpixel, and the first subpixel, the second subpixel and the third subpixel are arranged in this order repeatedly along the first direction and the first subpixel, the third subpixel and the second subpixel are arranged in this order repeatedly along the second direction, and the drive circuit is, A display device that, when driving one of the multiple sub-pixels, selects one pixel from the multiple pixels that corresponds to the one sub-pixel, selects eight pixels adjacent to the one pixel from the multiple pixels, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the eight pixels.

2. The display device according to claim 1, wherein the drive circuit multiplies the pixel data of the one pixel and the eight pixels by a value derived by a filter function, the filter function is determined based on the pixel distance, which is the distance between each of the one pixel and the eight pixels and the one sub-pixel, and derives a value of 0 or more when the pixel distance is less than or equal to a first distance, derives a value of less than 0 when the pixel distance is greater than the first distance and less than a second distance greater than the first distance, and derives 0 when the pixel distance is greater than or equal to the second distance, the second distance is equal to twice the distance between two pixels that are adjacent to each other in one of the first and second directions among the plurality of pixels.

3. The display device according to claim 1, wherein the value obtained by dividing the number of first sub-pixels by the number of first pixels is 2 or more and less than 3, and the value obtained by dividing the number of second sub-pixels by the number of second pixels is greater than 1 and 1.5 or less.

4. The display device according to claim 1, wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel.

5. The display area for displaying an image comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction, respectively, which are mutually orthogonal to each other, and a drive circuit that drives the plurality of subpixels based on pixel data having information about the plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more subpixels of a first subpixel number along the first direction and two or more subpixels of a second subpixel number along the second direction are arranged in a matrix, the plurality of pixels are arranged in a matrix along the first direction and the second direction, the subpixel sets correspond to pixel sets in which one or more pixels of a first pixel number along the first direction and two or more pixels of a second pixel number along the second direction are arranged in a matrix, the subpixels have a first subpixel, a second subpixel and a third subpixel, and the first subpixel, the second subpixel and the third subpixel are arranged in the same order along the first direction and the first subpixel, the third subpixel and the second subpixel are arranged in the same order along the second direction, and a plurality of subpixels are arranged, the drive circuit is, A display device that, when driving one of the multiple sub-pixels, selects one pixel from the multiple pixels that corresponds to the one sub-pixel, selects four pixels from the multiple pixels including two pixels adjacent to the one pixel in the first direction and two pixels adjacent to the one pixel in the second direction, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the four pixels.

6. A display area for displaying an image comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction inclined with respect to the first direction, and a drive circuit for driving the plurality of subpixels based on pixel data having information about a plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more first subpixels along the first direction and two or more second subpixels along the second direction are arranged in a matrix, the plurality of pixels are located in a matrix along the second direction and a third direction orthogonal to the second direction, the subpixel sets correspond to pixel sets in which one or more first pixels along the third direction and two or more second pixels along the second direction are arranged in a matrix, and the subpixels have a first subpixel, a second subpixel and a third subpixel, A display device wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged in the same order along the first direction, and the first sub-pixel, the third sub-pixel, and the second sub-pixel are arranged in the same order along the second direction, and a plurality of such arrangements are made, wherein the drive circuit, when driving one of the plurality of sub-pixels, selects one pixel from the plurality of pixels that corresponds to the one sub-pixel, selects eight pixels from the plurality of pixels that are adjacent to each other with respect to the one pixel, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the eight pixels.

7. A display area for displaying an image comprises a plurality of subpixels arranged in a matrix along a first direction and a second direction inclined with respect to the first direction, and a drive circuit for driving the plurality of subpixels based on pixel data having information about a plurality of pixels constituting the image, wherein the plurality of subpixels constitute a plurality of subpixel sets in which two or more subpixels with a first subpixel number along the first direction and two or more subpixels with a second subpixel number along the second direction are arranged in a matrix, the plurality of pixels are located in a matrix along the first direction and a third direction orthogonal to the first direction, the subpixel sets correspond to pixel sets in which one or more pixels with a first pixel number along the first direction and two or more pixels with a second pixel number along the third direction are arranged in a matrix, and the subpixels have a first subpixel, a second subpixel and a third subpixel, A display device wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are arranged in the same order along the first direction, and the first sub-pixel, the third sub-pixel, and the second sub-pixel are arranged in the same order along the second direction, and a plurality of such arrangements are made, wherein the drive circuit, when driving one of the plurality of sub-pixels, selects one pixel from the plurality of pixels that corresponds to the one sub-pixel, selects eight pixels from the plurality of pixels that are adjacent to each other with respect to the one pixel, and calculates sub-gradation data indicating the gradation of the one sub-pixel based on the pixel data of the one pixel and the eight pixels.

Images