Display system

Abstract

According to the utility model, in a display system which applies mosaic arrangement to the arrangement of the sub-pixels, the arrangement of the sub-pixels is visually seen as a stripe pattern by a user. The display system is provided with: a wearing part which is worn on the head of a user in a state of covering both eyes of the user; two display devices having a display region in which a plurality of sub-pixels are arranged in a matrix; and the driving circuit outputs the sub-pixel signals to the sub-pixels in a column inversion driving mode. In the display region, the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are continuously arranged in an inclined direction inclined with respect to the row direction and the column direction, respectively. The two display devices are provided with a plurality of signal lines that transmit sub-pixel signals to the plurality of sub-pixels in the column direction. The column direction of the first display device, the inclination direction of the first display device, the column direction of the second display device, and the inclination direction of the second display device are different from each other.

Description

Technical Field

[0001] This disclosure relates to display systems. Background Technology

[0002] Patent documents 1, 2, and 3 disclose virtual image display devices for use in display systems such as head-mounted displays (HMDs).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: JP 2019-53152

[0006] Patent Document 2: JP 2019-148626

[0007] Patent Document 3: JP 2019-148627 Utility Model Content

[0008] HMDs have a display panel for displaying images. Furthermore, in the case of a transmissive liquid crystal display (LCD), multiple sub-pixels with color filters are arranged in the display area of ​​the image-displaying panel. In HMDs, sometimes the arrangement of sub-pixels can be used to obtain a mosaic arrangement of images with a finer detail than a strip arrangement.

[0009] Furthermore, in an HMD, the display area of ​​the image display panel is located in front of the user's eyes. Therefore, the distance between the user's eyes and the display area is relatively close. This can sometimes cause the user to perceive the arrangement of subpixels as a grid pattern or stripe pattern (the so-called screen-door effect).

[0010] Furthermore, in the display panel, multiple signal lines that transmit the signal that causes the image to be displayed in the display area are arranged parallel to each other along the arrangement of sub-pixels. When the signal that causes the image to be displayed is output by a column-inverting drive method that periodically reverses the polarity of the signal, sometimes the brightness of the sub-pixels changes periodically due to the polarity of the signal, resulting in the user visually perceiving the arrangement of the sub-pixels as a striped pattern.

[0011] The purpose of this disclosure is to prevent users from visually perceiving the arrangement of subpixels as a striped pattern in display systems that apply a mosaic arrangement to the subpixels.

[0012] The display system disclosed herein comprises: a wearable part worn on a user's head to cover the user's eyes; two display devices having a display area in which a plurality of sub-pixels are arranged in a matrix; and a driving circuit that outputs sub-pixel signals for displaying an image in the display area. The plurality of sub-pixels have a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels of different colors. In the display area, the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are arranged in a state where they are repeatedly arranged in the order of the first sub-pixels, the second sub-pixels, and the third sub-pixels along a row direction, and in a state where they are repeatedly arranged in the order of the first sub-pixels, the second sub-pixels, and the third sub-pixels along a column direction. The plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are respectively tilted relative to the row direction and the column direction. The two display devices are arranged continuously in a tilt direction. Each display device has multiple signal lines extending along the column direction. The multiple signal lines transmit the sub-pixel signals to the multiple sub-pixels. The display devices are arranged such that the display area of ​​the first display device is opposite to one of the user's eyes, and the display area of ​​the second display device is opposite to the other of the user's eyes. The display devices are configured in the wearable part with the column direction, tilt direction, column direction, and tilt direction of the first display device being different from each other. The driving circuit outputs the sub-pixel signals through a column inversion driving method. The column inversion driving method means that the polarities of the sub-pixel signals in two adjacent signal lines in the row direction are different, and the polarities of the sub-pixel signals are periodically reversed.

[0013] As a more preferred embodiment of the display system, when viewed from above, the first angle formed by the orthogonal direction orthogonal to the arrangement direction of the two display devices and the column direction of the first display device, and the second angle formed by the orthogonal direction and the column direction of the second display device, are equal.

[0014] As a more preferred embodiment of the display system, when viewed from above, the ratio of the second spacing between two adjacent sub-pixels in the column direction to the first spacing between two adjacent sub-pixels in the row direction is more than 4 / 3 and less than 3.

[0015] As a more preferred embodiment of the display system, 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. Attached Figure Description

[0016] Figure 1 This is a perspective view of a display system according to an embodiment of the present disclosure.

[0017] Figure 2 This is a schematic diagram showing the configuration of the display system.

[0018] Figure 3 This is a diagram showing the configuration of the display device in the wearable section.

[0019] Figure 4 This is a diagram showing the configuration of the display device.

[0020] Figure 5 This is a side view of the display device.

[0021] Figure 6 This is a diagram showing the circuitry of the display panel.

[0022] Figure 7 This is a cross-sectional view of the display panel.

[0023] Figure 8 This is a top view of the first display area, showing the arrangement of multiple sub-pixels in the display area of ​​the display device.

[0024] Figure 9 It is a diagram showing the X1 direction, Y1 direction, column direction of the first display device, tilt direction of the first display device, column direction of the second display device, and tilt direction of the second display device.

[0025] The reference numerals in the attached figures are explained as follows:

[0026] 1 Display System

[0027] 2 Wearable parts

[0028] 5 display devices

[0029] 5a First Display Device

[0030] 5b Second display device

[0031] 10 display panels

[0032] 11 drive circuit

[0033] D1 row direction

[0034] Column D2

[0035] D3 tilt direction

[0036] DA display area

[0037] Lb signal line

[0038] P1 First Spacing

[0039] P2 second spacing

[0040] S-subpixel

[0041] Sα first sub-pixel

[0042] Sβ second sub-pixel

[0043] Sγ third sub-pixel

[0044] θ1 First angle

[0045] θ2 second angle Detailed Implementation

[0046] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. This disclosure is not limited to the content described in the following embodiments. Furthermore, the constituent elements described below include substantially the same constituent elements that can be readily conceived by those skilled in the art. Moreover, the constituent elements described below can be appropriately combined.

[0047] Furthermore, this disclosure is merely an example, and appropriate modifications that would readily conceive by those skilled in the art while maintaining the spirit of this disclosure are naturally included within its scope. Additionally, to make the description clearer, the width, thickness, shape, etc., of various parts of the drawings are sometimes shown schematically compared to the actual form, but these are merely examples and do not limit the interpretation of this disclosure. Furthermore, in this specification and the various figures, the same reference numerals are sometimes used for elements that are the same as those described in the accompanying drawings, and detailed descriptions are appropriately omitted.

[0048] Figure 1 This is a perspective view of the display system 1 according to an embodiment of the present disclosure. Figure 2 This is a schematic diagram showing the configuration of display system 1. Display system 1 is, for example, a head-mounted display. Display system 1 displays images such as computer graphics images and 360-degree live-action images.

[0049] The display system 1 includes a wearable part 2, an image signal source 3, two lenses 4, and a display device 5.

[0050] Furthermore, the X1 direction (equivalent to "arrangement direction"), Y1 direction (equivalent to "orthogonal direction"), and Z1 direction shown in the accompanying drawings are orthogonal to each other, indicating the direction of the main body 2a of the wearable part 2. The X1 direction, Y1 direction, and Z1 direction correspond to the width direction, height direction, and thickness direction of the main body 2a, respectively. Moreover, the X1 direction, Y1 direction, and Z1 direction are examples, and this disclosure is not limited to these directions. Additionally, in this specification, the side indicated by the arrow representing the direction shown in the accompanying drawings is designated as the "+" side, and the opposite side is designated as the "-" side. For example, in the Z1 direction, the side indicated by the arrow is designated as the "+Z1" side, and the opposite side is designated as the "-Z1" side.

[0051] Wearable device 2 may be, for example, headphones, goggles, a helmet, or a face mask. Wearable device 2 includes a main body 2a and a strap 2b. An image signal source 3, two lenses 4, and a display device 5 are disposed on the main body 2a. The strap 2b is wrapped around the user's head to secure the main body 2a to the user's head. Wearable device 2 is worn on the user's head with the main body 2a covering the user's eyes.

[0052] The image signal source 3 outputs an image signal, including image information, to the display device 5. The image signal includes two different images that utilize the parallax of the user's two eyes. These two images are for the user's right eye and for the user's left eye. The image signal source 3 also outputs images pre-stored internally to the display device 5. The image signal source 3 may include, for example, an HDD (Hard disk drive) or flash memory. Furthermore, the image signal source 3 may be located externally to the wearable unit 2. In this case, the image signal source 3 is a computer (e.g., a server) electrically connected to the display device 5 via wired or wireless means.

[0053] Two lenses 4 are positioned opposite the user's eyes E. Lens 4 are, for example, convex lenses made of glass. The two lenses 4 correspond to the user's eyes. Lens 4 are positioned between the display device 5 and the user's eyes E. Using the lens effect of the lenses 4, light emitted from the display device 5 is focused onto the user's eyes E. The user visually confirms (observes) the magnified image displayed on the display device 5.

[0054] The display device 5 is positioned on the opposite side of the user's eye E, separated by two lenses 4.

[0055] Figure 3 This diagram shows the configuration of the display devices 5 in the wearable unit 2. The display system 1 has two display devices 5. That is, the display system 1 has a first display device 5a and a second display device 5b. The first display device 5a and the second display device 5b are configured with the same structure.

[0056] The first display device 5a acquires an image for the left eye from the image signal source 3. The display area DA of the first display device 5a is opposite to the user's left eye and displays the image for the left eye. The second display device 5b acquires an image for the right eye from the image signal source 3. The display area DA of the second display device 5b is opposite to the user's right eye and displays the image for the right eye. Furthermore, the display area DA is planar. The display areas DA of the first display device 5a and the second display device 5b are located on the same plane orthogonal to the Z1 direction.

[0057] In this configuration, the display areas DA of the first display device 5a and the second display device 5b are arranged in a direction corresponding to the left-right direction of the user's glasses. Furthermore, the arrangement of the display areas DA of the first display device 5a and the second display device 5b corresponds to the left-right direction of the main body 2a, that is, the X1 direction.

[0058] In addition, Figure 3 Arrows indicating the orientation of the first display device 5a and the second display device 5b are shown (details will be explained later). Hereinafter, without distinguishing between the first display device 5a and the second display device 5b, they will be referred to simply as "display device 5".

[0059] Figure 4 This is a diagram showing the configuration of the display device 5. Figure 5 This is a side view of display device 5.

[0060] In the following figures, the X2, Y2, and Z2 directions, which are orthogonal to each other, represent the orientation of the display device 5. The X2 and Y2 directions correspond to directions parallel to the main surface of the substrate included in the display device 5. The Z2 direction corresponds to a direction parallel to the main surface of the substrate included in the display device 5. Furthermore, the Z2 direction corresponds to the thickness direction of the first display device 5. The side indicated by the arrow in the Z2 direction (+Z2 side) corresponds to the front surface side where the image is displayed in the first display device 5, and the opposite side (-Z2 side) corresponds to the back surface side of the first display device 5. Viewing the display device 5 along the Z2 direction is referred to as a "top view." Moreover, the X2, Y2, and Z2 directions are examples, and this disclosure is not limited to these directions.

[0061] The display device 5 includes a display panel 10 and a lighting device 20. The display panel 10 is a transmissive liquid crystal display.

[0062] The front surface of the display panel 10 has a display area DA for displaying images. The front surface of the display panel 10 is orthogonal to the Z2 direction. The display area DA is polygonal when viewed from above, but it can also be rectangular.

[0063] On the display area DA, multiple sub-pixels S are arranged in a matrix. Viewed from above, the multiple sub-pixels S are arranged in a matrix along row direction D1 and column direction D2. Row direction D1 and column direction D2 are orthogonal to each other. Row direction D1 is parallel to the X2 direction. Column direction D2 is parallel to the Y2 direction. It should be noted that row direction D1 can also be tilted relative to the X2 direction. Details about sub-pixels S will be explained later.

[0064] The lighting device 20 is disposed on one side of the back of the display panel 10 and emits light toward the display panel 10. The lighting device 20 is a so-called direct-down backlight. The lighting device 20 includes, for example, a plurality of light-emitting diodes.

[0065] Figure 6 This is a diagram showing the circuit configuration of the display panel 10. The display panel 10 includes a driving circuit 11, and a switching element SW, a sub-pixel electrode PE, a common electrode CE, a liquid crystal capacitor LC, and a holding capacitor CS for each of the plurality of sub-pixels S.

[0066] The driving circuit 11 causes the display area DA to display an image. The driving circuit 11 includes a signal processing circuit 11a, a signal output circuit 11b, and a scanning circuit 11c.

[0067] The signal processing circuit 11a generates multiple sub-pixel signals (described later) based on the image signal transmitted from the image signal source 3, and outputs the generated multiple sub-pixel signals to the signal output circuit 11b. In addition, the signal processing circuit 11a outputs a clock signal that synchronizes the operation of the signal output circuit 11b with the operation of the scanning circuit 11c to both the signal output circuit 11b and the scanning circuit 11c.

[0068] The signal output circuit 11b outputs multiple sub-pixel signals to their respective sub-pixels S. The signal output circuit 11b and the multiple sub-pixels S are electrically connected together via multiple signal lines Lb extending along the second arrangement direction D2. That is, the multiple signal lines Lb extend along the column direction D2 and transmit sub-pixel signals to the multiple sub-pixels S.

[0069] In addition, the signal output circuit 11b outputs sub-pixel signals using a column inversion driving method. The column inversion driving method means that the polarities of the sub-pixel signals on two adjacent signal lines Lb in the row direction D1 are different, and the polarities of the sub-pixel signals are periodically (e.g., for each frame) inverted.

[0070] The scanning circuit 11c scans multiple sub-pixels S synchronously with the output of the sub-pixel signal from the signal output circuit 11b. The scanning circuit 11c and the multiple sub-pixels S are electrically connected together via multiple scan lines Lc extending along the row direction D1.

[0071] From a top view, the area divided by two adjacent signal lines Lb in the row direction D1 and two adjacent scan lines Lc in the column direction D2 is equivalent to a sub-pixel S.

[0072] The switching element SW is, for example, composed of a thin-film transistor (TFT). In the switching element SW, the source electrode is electrically connected to the signal line Lb, and the gate electrode is electrically connected to the scan line Lc.

[0073] The sub-pixel electrode PE is connected to the drain electrode of the switching element SW. Multiple common electrodes CE are configured corresponding to the sub-pixel electrodes PE. Both the sub-pixel electrodes PE and the common electrodes CE are transparent.

[0074] The liquid crystal capacitor LC is the capacitance component of the liquid crystal material in the liquid crystal layer 13 (described later) located between the sub-pixel electrode PE and the common electrode CE. The holding capacitor CS is disposed 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.

[0075] Figure 7 This is a cross-sectional view of the display panel 10. The display panel 10 includes a first substrate 12, a liquid crystal layer 13, and a second substrate 14.

[0076] The first substrate 12, the liquid crystal layer 13, and the second substrate 14 are each transparent and are arranged in the Z2 direction from the - side to the + side, in this order. An IC chip Ti constituting the driving circuit 11 is disposed on the first substrate 12. Figure 4 , Figure 5 ).

[0077] Signal lines Lb and scan lines Lc are disposed on the main surface 12a, which corresponds to the front surface of the first substrate 12. Figure 7 (Not shown in the figure). Additionally, a color filter CF is disposed on the main surface 12a of the first substrate 12. The color filter CF is rectangular in top view, and one is disposed in each of the plurality of sub-pixels S.

[0078] A color filter (CF) is transparent, and the peak values ​​of the transmitted light spectrum are predetermined. Each peak value is one of the peak values ​​of three different colors. These three colors are red, green, and blue, but the number and variety of colors are not limited to these. Hereinafter, the color corresponding to the peak value of the light spectrum transmitted by the color filter (CF) will be referred to as the color of the color filter (CF). The color of the color filter (CF) is equivalent to the color of the sub-pixel (S).

[0079] Furthermore, in the first substrate 12, a sub-pixel electrode PE is disposed on the +Z2 side in the Z2 direction, relative to the color filter CF and the signal line Lb, separated by an insulating layer IL1. The sub-pixel electrode PE coincides with the color filter CF in the Z2 direction.

[0080] Furthermore, in the first substrate 12, a light-shielding film SM, a common electrode CE, and an alignment film AL are disposed on the +Z2 side in the Z2 direction relative to the sub-pixel electrode PE, separated by an insulating layer IL2.

[0081] The light-shielding film SM has light-shielding properties. The light-shielding film SM coincides with the signal line Lb and the scan line Lc in the Z2 direction. That is, the light-shielding film SM divides into multiple sub-pixels S. In other words, the boundaries of two adjacent sub-pixels S in the row direction D1 and the column direction D2 coincide in the Z2 direction.

[0082] A common electrode CE is stacked on a light-shielding film SM and has a slit SL, which, when viewed from above, is arranged to span two adjacent sub-pixel electrodes PE. In this way, the common electrode CE and the sub-pixel electrodes PE are disposed on the first substrate 12. That is, the display panel 10 is a liquid crystal display using a lateral electric field method.

[0083] The liquid crystal layer 13 includes a plurality of liquid crystal molecules LM. The liquid crystal layer 13 is located between two alignment films AL facing each other in the Z2 direction. The orientation of the liquid crystal molecules LM is determined by the two alignment films AL. The alignment films AL are disposed on the back side of the second substrate 14.

[0084] In addition, the display panel 10 also includes a first polarizer 15 disposed on the back side of the first substrate 12 and a second polarizer 16 disposed on the front surface side of the second substrate 14.

[0085] The first polarizer 15 has a transmission axis orthogonal to the Z2 direction. The second polarizer 16 has a transmission axis orthogonal to both the transmission axis of the first polarizer 15 and the Z2 direction.

[0086] Next, the operation of the display device 5 when an image is displayed in the display area DA will be explained. When the display device 5 acquires an image signal sent from the image signal source 3, it displays an image in the display area DA.

[0087] The image signal includes the grayscale of the sub-pixel S corresponding to the image. The driving circuit 11 generates a sub-pixel signal representing the grayscale of the sub-pixel S and outputs the sub-pixel signal to the sub-pixel S. Consequently, a voltage corresponding to the grayscale represented by the sub-pixel signal is applied to the liquid crystal layer 13 corresponding to the sub-pixel S, causing the liquid crystal molecules LM to tilt. The degree of tilt of the liquid crystal molecules LM varies according to the grayscale represented by the sub-pixel signal.

[0088] Light from the illumination device 20 is incident on the display panel 10. The light incident on the display panel 10 is colored by the transmission color filter CF and then incident on the liquid crystal layer 1. Due to the tilt of the liquid crystal molecules LM, the light transmitted through the liquid crystal layer 13 is modulated into grayscale values ​​represented by sub-pixel signals. Furthermore, the light transmitted through the liquid crystal layer 13 exits from the display panel 10. Thus, an image is displayed in the first display area DA.

[0089] Next, the arrangement of multiple sub-pixels S in the display area DA will be explained.

[0090] Figure 8 This is a top view of the display area DA of the display device 5, showing the arrangement of multiple sub-pixels S in the display area DA. Figure 8 The multiple sub-pixels S shown are a portion of the multiple sub-pixels S arranged on the display area DA. Additionally, Figure 8 The multiple sub-pixels S shown are represented by a color filter CF and a light-shielding film SM. Viewed from above, the multiple sub-pixels S are divided by the light-shielding film SM, and the color filter CF is rectangular.

[0091] Multiple sub-pixels S have the same rectangular shape when viewed from above. As described above, the multiple sub-pixels S are arranged in a matrix along the row direction D1 and the column direction D2 when viewed from above.

[0092] Hereinafter, the distance between the center points C of two adjacent sub-pixels S in the row direction D1 of the plurality of sub-pixels S in a top view is referred to as the first spacing P1, and the distance between the center points C of two adjacent sub-pixels S in the column direction D2 of the plurality of sub-pixels S is referred to as the second spacing P2. In this embodiment, the ratio of the second spacing P2 to the first spacing P1 is 4 / 3. Furthermore, the ratio of the second spacing P2 to the first spacing P1 can be 2. The ratio of the second spacing P2 to the first spacing P1 only needs to be 4 / 3 or more and less than 3.

[0093] Multiple sub-pixels S have multiple first sub-pixels Sα, multiple second sub-pixels Sβ, and multiple third sub-pixels Sγ. Among the first sub-pixels Sα, second sub-pixels Sβ, and third sub-pixels Sγ, the color of the color filter CF (i.e., the color of sub-pixels S) is different from each other. The color of the first sub-pixel Sα is red. The color of the second sub-pixel Sβ is green. The color of the third sub-pixel Sγ is blue. That is, the first sub-pixel Sα is a red sub-pixel S. The second sub-pixel Sβ is a green sub-pixel S. The third sub-pixel Sγ is a blue sub-pixel S. Furthermore, the color of the sub-pixels S is, of course, not limited to this.

[0094] In the following description, without distinguishing between the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ, they will sometimes be simply referred to as "sub-pixel S".

[0095] On the display area DA, multiple first sub-pixels Sα, multiple second sub-pixels Sβ, and multiple third sub-pixels Sγ are as follows: Figure 8 Configure as shown. Figure 8 The arrangement of subpixels S shown is a so-called mosaic arrangement. Specifically, in a top view, along row direction D1, from the -D1 side (opposite to the side indicated by the arrow) towards the +D1 side (the side indicated by the arrow), the arrangement repeats in the order of the first subpixel Sα, the second subpixel Sβ, and the third subpixel Sγ. And along column direction D2, from the -D2 side (opposite to the side indicated by the arrow) towards the +D2 side (the side indicated by the arrow), the arrangement repeats in the order of the first subpixel Sα, the second subpixel Sβ, and the third subpixel Sγ.

[0096] exist Figure 8 In the mosaic arrangement shown, sub-pixels S of the same color are arranged continuously along a tilted direction D3, which is inclined relative to the row direction D1 and the column direction D2, when viewed from above. That is, when viewed from above, multiple first sub-pixels Sα, multiple second sub-pixels Sβ, and multiple third sub-pixels Sγ are arranged continuously along the tilted direction D3. The tilted direction D3 is the direction of an imaginary line extending from the center point C of adjacent sub-pixels S of the same color. Figure 8 The imaginary line L1 shown is an imaginary line passing through the center point C of the first red sub-pixel Sα that is adjacent to each other.

[0097] Furthermore, in the strip arrangement, which is one of the arrangements of sub-pixels S, these sub-pixels are repeatedly arranged along the row direction D1 from the -D1 side to the +D1 side in the order of the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ, and sub-pixels S of the same color in the column direction D2 are arranged in a continuous state. Additionally, in the strip arrangement, the ratio of the second spacing P2 to the first spacing P1 is 3. Therefore, regarding this ratio, the mosaic arrangement is smaller than the strip arrangement. Thus, compared to the strip arrangement, the mosaic arrangement can produce a finer image.

[0098] As described above, by wearing the wearable part 2 on the user's head in a manner that covers both eyes, the distance between the display area DA and the user's eyes is relatively short. In this case, sometimes the user perceives the arrangement of subpixels S as a grid pattern or stripe pattern (the so-called Screen Door Effect (hereinafter, sometimes referred to as SDE)).

[0099] For example, when the display area DA displays only red, the brightness of the first red sub-pixel Sα is greater than zero, while the brightness of the second green sub-pixel Sβ and the third blue sub-pixel Sγ is zero. Therefore, the first sub-pixel Sα displays red, and the second and third sub-pixels Sβ and Sγ display black. Furthermore, in the display area DA, as described above, multiple first sub-pixels Sα, multiple second sub-pixels Sβ, and multiple third sub-pixels Sγ are arranged continuously along the tilt direction D3. In this case, a striped pattern (SDE) that is visually confirmed (observed) by the user as alternating columns of red and black along the tilt direction D3 is sometimes generated.

[0100] As described above, the first display device 5a and the second display device 5b are arranged along the X1 direction. In this case, when the tilt direction D3 of the first display device 5a overlaps with the tilt direction D3 of the second display device 5b, the stripe pattern along the tilt direction D3 is emphasized, thereby increasing the likelihood that the stripe pattern can be visually confirmed by the user.

[0101] Furthermore, as described above, the driving circuit 11 outputs sub-pixel signals using a column-inverted driving method. This method means that the polarities of sub-pixel signals on two adjacent signal lines Lb along the row direction D1 are different, and the polarities of the sub-pixel signals are periodically reversed. Signal lines Lb extend along the column direction D2. Therefore, in this case, the polarities of the sub-pixel signals corresponding to the plurality of sub-pixels S arranged along the column direction D2 are the same, while the polarities of the sub-pixel signals corresponding to two adjacent sub-pixels S along the row direction D1 are different.

[0102] For example, such as Figure 8 As indicated by the symbols in parentheses, when the polarity of the sub-pixel signal corresponding to multiple sub-pixels S in the column closest to -D1 is positive (+), the polarity of the sub-pixel signal corresponding to multiple sub-pixels S in the adjacent column is negative (-). In other words, the polarity of the sub-pixel signals corresponding to multiple sub-pixels S becomes the same for each other in the column direction D2, and alternates between positive and negative in the row direction D1.

[0103] Furthermore, sometimes the brightness of a subpixel S corresponding to a subpixel signal with positive polarity differs from the brightness of a subpixel S corresponding to a subpixel signal with negative polarity. Therefore, subpixels S with the same brightness in column direction D2 and different brightness in row direction D1 are arranged alternately. In this case, sometimes a striped pattern along column direction D2 is generated due to the difference in brightness of subpixel S caused by the column inversion driving method, which the user can visually confirm.

[0104] As described above, the first display device 5a and the second display device 5b are arranged in the X1 direction. In this case, when the column direction D2 of the first display device 5a overlaps with the column direction D2 of the second display device 5b, the stripe pattern along the column direction D2 is emphasized, thereby increasing the likelihood that the user will visually recognize the stripe pattern.

[0105] Furthermore, when the tilt direction D3 of the first display device 5a overlaps with the column direction D2 of the second display device 5b, the striped pattern along the tilt direction D3 and the striped pattern along the column direction D2 are emphasized, thereby increasing the likelihood that the user will visually recognize the striped pattern. It should be noted that this also applies when the column direction D2 of the first display device 5a overlaps with the tilt direction D3 of the second display device 5b.

[0106] Therefore, as Figure 3 As shown, two display devices 5 are arranged on the wearable part 2 with the column direction D2 of the first display device 5a, the tilt direction D3 of the first display device 5a, the column direction D2 of the second display device 5b, and the tilt direction D3 of the second display device 5b being different from each other.

[0107] Figure 9 This diagram illustrates the X1 direction, Y1 direction, column direction D2 of the first display device 5a, tilt direction D3 of the first display device 5a, column direction D2 of the second display device 5b, and tilt direction D3 of the second display device 5b. It should be noted that... Figure 9 In the figure, the reference numerals for the direction corresponding to the first display device 5a are marked "(5a)", and the reference numerals for the direction corresponding to the second display device 5b are marked "(5b)".

[0108] In this embodiment, viewed from above, the first angle θ1 formed by the Y1 direction and the column direction D2 of the first display device 5a, and the second angle θ2 formed by the Y1 direction and the column direction D2 of the second display device 5b are equal, wherein the Y1 direction is orthogonal to the X1 direction in which the two display devices 5 are arranged. That is, the two display devices 5 are configured such that the column direction D2 of the first display device 5a and the column direction D2 of the second display device 5b form an imaginary line L2 along the Y1 direction (refer to...). Figure 3 () is a state of linear symmetry with the axis of symmetry.

[0109] Furthermore, in this embodiment, the column direction D2 of the first display device 5a and the column direction D2 of the second display device 5b are orthogonal to each other. That is, the first angle θ1 and the second angle θ2 are 45°.

[0110] As described above, when the ratio of the second spacing P2 to the first spacing P1 of the sub-pixel S is 4 / 3, in each of the first display device 5a and the second display device 5b, the third angle θ3 formed by the column direction D2 and the tilt direction D3 is 36.8°.

[0111] Furthermore, when the column direction D2 of the first display device 5a and the column direction D2 of the second display device 5b are orthogonal to each other, the fourth angle θ4 formed by the tilt direction D3 of the first display device 5a and the column direction D2 of the second display device 5b is 53.2°.

[0112] In the manner described above, when the column direction D2 of the first display device 5a, the tilt direction D3 of the first display device 5a, the column direction D2 of the second display device 5b, and the tilt direction D3 of the second display device 5b are different from each other, the direction of the stripe pattern caused by the generation of SDE (tilt direction D3) and the direction of the stripe pattern caused by the column reversal driving method (column direction D2) in the two display devices 5 do not overlap. That is, the stripe pattern along the tilt direction D3 and the stripe pattern along the column direction D2 are not emphasized. Therefore, it is possible to suppress the user from visually perceiving the arrangement of sub-pixels S as a stripe pattern in the display system 1 in which a mosaic arrangement is applied to the arrangement of sub-pixels S.

[0113] It should be noted that when the sub-pixels S are arranged in a stripe pattern, the direction of the stripe pattern caused by the generation of SDE is the column direction D2. Furthermore, in this case, in each of the two display devices 5, the direction in which the signal line Lb extends is consistent with the column direction D2 of the sub-pixels S. Therefore, regardless of the orientation of the display devices 5, in each of the two display devices 5, the direction of the stripe pattern caused by the generation of SDE (column direction D2) is consistent with the direction of the stripe pattern caused by the column inversion driving method (column direction D2). Therefore, as shown in this embodiment, when the sub-pixels S are arranged in a mosaic pattern, compared to the case of a stripe arrangement, it is possible to suppress the visual perception of a stripe pattern by the user.

[0114] The preferred embodiments of this disclosure have been described above, but this disclosure is not limited to these embodiments. The content disclosed in the embodiments is merely an example, and various modifications can be made without departing from the spirit of this disclosure. Appropriate modifications made without departing from the spirit of this disclosure are of course also within the technical scope of this disclosure.

[0115] For example, in the above embodiment, the fifth angle θ5 formed by the column direction D2 of the first display device 5a and the column direction D2 of the second display device 5b is 90°, but the fifth angle θ5 can be smaller than 90°. In this case, it is preferable to specify the first angle θ1 and the second angle θ2 in such a way that the fifth angle θ5 is 60° or more and 90° or less. As in the above embodiment, when the ratio of the second spacing P2 of the sub-pixel S to the first spacing P1 is 4 / 3, when comparing the cases where the fifth angle θ5 is 0°, 30°, 60°, and 90°, it is confirmed that the stripe pattern is not visually observed when the fifth angle θ5 is 60° and 90°. It should be noted that when the ratio of the second spacing P2 of the sub-pixel S to the first spacing P1 is 4 / 3 as in the above embodiment, and the fifth angle θ5 is 60° or more and 90° or less, the fourth angle θ4 is 23.2° or more and 53.2° or less. On the other hand, when the fifth angle θ5 is smaller than 60°, the fourth angle θ4 is smaller than 23.2°, and the tilt direction D3 of the first display device 5a is close to the column direction D2 of the second display device 5b.

[0116] Furthermore, the first angle θ1 and the second angle θ2 can be different from each other. That is, the column direction D2 of the first display device 5a and the column direction D2 of the second display device 5b can be non-linearly symmetrical.

[0117] Furthermore, the row direction D1 can also be tilted relative to the X2 direction. In this case, the column direction D2 is tilted relative to the Y2 direction. Moreover, the angle between the column direction D2 and the Y2 direction in the first display device 5a and the angle between the column direction D2 and the Y2 direction in the second display device 5b can be different from each other. In addition, the row direction D1 and the column direction D2 can also be tilted without being orthogonal to each other.

[0118] Furthermore, the aforementioned display panel 10 can be a liquid crystal display in which a common electrode CE is disposed on the second substrate 14 in a vertical electric field manner, such that it is opposite to the plurality of sub-pixel electrodes PE. Alternatively, the display panel 10 can be a reflective liquid crystal display.

[0119] Furthermore, regarding other effects resulting from the configuration described in this embodiment, effects clearly derived from the description in this specification, or effects that can be appropriately conceived by those skilled in the art, should also be understood as being caused by this disclosure.

Claims

1. A display system, characterized in that, have: A headpiece worn to cover the user's eyes; Two display devices having a display area, wherein multiple sub-pixels are arranged in a matrix in the display area; as well as A driving circuit that outputs sub-pixel signals that cause an image to be displayed in the display area. The plurality of sub-pixels have a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels that are different colors from each other. In the display area, The plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are configured to be arranged repeatedly in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the row direction, and also in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the column direction. The plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are arranged continuously along an inclined direction that is inclined relative to the row direction and the column direction, respectively. The two display devices have a plurality of signal lines extending along the column direction, the plurality of signal lines transmitting the sub-pixel signals to the plurality of sub-pixels. Furthermore, the two display devices are arranged such that the display area of ​​the first display device is opposite to one of the user's eyes, and the display area of ​​the second display device is opposite to the other of the user's eyes. The two display devices are arranged on the wearable part with the column direction of the first display device, the tilt direction of the first display device, the column direction of the second display device, and the tilt direction of the second display device being different from each other. The driving circuit outputs the sub-pixel signal through a column inversion driving method, which means that the polarities of the sub-pixel signals in two adjacent signal lines in the row direction are different, and the polarities of the sub-pixel signals are periodically reversed.

2. The display system according to claim 1, characterized in that, From a top view, the first angle formed by the orthogonal direction and the column direction of the first display device and the second angle formed by the orthogonal direction and the column direction of the second display device are equal, and the orthogonal direction is the direction orthogonal to the arrangement direction of the two display devices.

3. The display system according to claim 1, characterized in that, From a top view, the ratio of the second spacing between two adjacent sub-pixels in the column direction to the first spacing between two adjacent sub-pixels in the row direction is greater than 4 / 3 and less than 3.

4. The display system according to claim 1, characterized in that, The first sub-pixel is a red sub-pixel. The second sub-pixel is a green sub-pixel. The third sub-pixel is a blue sub-pixel.

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