Display system

Abstract

According to the utility model, the screen window effect is inhibited in the display system in which the mosaic arrangement is applied to the arrangement of the sub-pixels. 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; a first display device disposed on the wearing part and having a first display region facing the left eye of the user; and a second display device disposed on the wearing part and having a second display region facing the right eye of the user. In the first display region, a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, which are orthogonal to each other, are continuously arranged in a third arrangement direction that is inclined with respect to the first arrangement direction and the second arrangement direction, respectively. In a plan view, a first angle between a Y1 direction and a third arrangement direction is smaller than a second angle between the second arrangement direction and the third arrangement direction, and the Y1 direction is orthogonal to an X1 direction in which the first display region and the second display region are arranged.

Description

Technical Field

[0001] The present disclosure relates to a display system. Background Art

[0002] Patent Documents 1, 2, and 3 disclose virtual image display devices applied to display systems such as head mounted displays (Head Mount Display: hereinafter, sometimes referred to as HMD).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-53152

[0006] Patent Document 2: Japanese Patent Application Publication No. 2019-148626

[0007] Patent Document 3: Japanese Patent Application Publication No. 2019-148627 Utility Model Content

[0008] The HMD includes a display panel for displaying an image. In addition, when the display panel is a transmissive liquid crystal display, a plurality of sub-pixels having color filters are arranged in a display area of the display panel for displaying an image. In the HMD, a mosaic arrangement that can obtain a finer image than a stripe arrangement is sometimes applied to the arrangement of sub-pixels.

[0009] In addition, in an HMD, the display area of the display panel that displays an image is located in front of the user's eyes. Therefore, the distance between the user's eyes and the display area is relatively close. As a result, sometimes the user visually recognizes the arrangement of sub-pixels as a grid pattern or a stripe pattern (the so-called screen door effect). In a display system such as an HMD, there is a demand to suppress the occurrence of the screen door effect.

[0010] An object of the present disclosure is to suppress the occurrence of a screen door effect in a display system that applies a mosaic arrangement to an arrangement of sub-pixels.

[0011] The display system of the present disclosure includes: a wearing part that is worn on the user's head in a state of covering the user's both eyes; a first display device that is disposed in the wearing part and has a first display area facing one of the user's both eyes; a second display device that is disposed in the wearing part and has a second display area facing the other of the user's both eyes; a driving circuit that causes the first display area and the second display area to display images. In the first display area and the second display area, a plurality of sub-pixels are arranged in a matrix in each direction along a first direction and a second direction that are orthogonal to each other in a plan view. The plurality of sub-pixels include a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels that have different colors from each other. In the first 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the second direction. The plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are continuously arranged along a third direction that is inclined with respect to the first direction and the second direction. And in a plan view, a first angle between a fifth direction and the third direction is smaller than a second angle between the second direction and the third direction, and the fifth direction is orthogonal to a fourth direction in which the first display area and the second display area are arranged.

[0012] As a more preferable aspect of the display system, the first angle is defined as an angle at which at least three sub-pixels among the plurality of sub-pixels continuously arranged along the third direction coincide with an imaginary line extending along the fifth direction.

[0013] As a more preferable aspect of the display system, in the second 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the third sub-pixel, and the second sub-pixel along the second direction. The plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are continuously arranged along a sixth direction that is different from the third direction inclined with respect to the first direction and the second direction. And in a plan view, a third angle between the fifth direction and the sixth direction is smaller than a fourth angle between the second direction and the sixth direction.

[0014] As a more preferred mode of the display system, the ratio of the second pitch between two sub-pixels adjacent to each other in the second direction among the plurality of sub-pixels to the first pitch between two sub-pixels adjacent to each other in the first direction is 4 / 3 or more and less than 3 when viewed from above.

[0015] As a more preferred mode 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.

[0016] In addition, the display system of the present disclosure includes: a first display device having a first display area opposite to one of the user's two eyes; a second display device having a second display area opposite to the other of the user's two eyes; and a drive circuit for causing the first display area and the second display area to display an image. In the first display area and the second display area, a plurality of sub-pixels are arranged in a matrix along each of a first direction and a second direction orthogonal to each other when viewed from above. The plurality of sub-pixels include a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels having different colors from each other. In the first 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the second direction. In the second 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the third sub-pixel, and the second sub-pixel along the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the display system according to an embodiment of the present disclosure.

[0018] Figure 2 is a schematic diagram showing the configuration of the display system.

[0019] Figure 3 is a diagram showing the arrangement of the display device in the wearing part.

[0020] Figure 4 is a diagram showing the configuration of the first display device.

[0021] Figure 5 is a side view of the first display device.

[0022] Figure 6 is a diagram showing the circuit configuration of the display panel.

[0023] Figure 7 is a cross-sectional view of the display panel.

[0024] Figure 8 is a top view of the first display area showing the arrangement of a plurality of sub-pixels in the first display area of the first display device.

[0025] Figure 9 is a top view of the second display device showing the arrangement of a plurality of sub-pixels in the second display area of the second display device.

[0026] Figure 10 is a diagram showing Figure 8 the state in which the first display area shown rotates clockwise about the Z2 direction toward Figure 8 the diagram of.

[0027] Figure 11 is a diagram showing Figure 10 the state in which the first display area shown rotates clockwise about the Z2 direction toward Figure 10 the diagram of.

[0028] Figure 12 is a diagram showing Figure 11 the state in which the first display area shown rotates clockwise about the Z2 direction toward Figure 11 the diagram of.

[0029] Figure 13 is a diagram showing the configuration of the display device in the wearing part which is a modification example of the embodiment of the present disclosure.

[0030] Among them, the reference numerals are explained as follows:

[0031] 1 Display system

[0032] 2 Wearing part

[0033] 5a First display device

[0034] 5b Second display device

[0035] D1 First arrangement direction (first direction)

[0036] D2 Second arrangement direction (second direction)

[0037] D3 Third arrangement direction (third direction)

[0038] D4 Fourth arrangement direction (sixth direction)

[0039] D5 Fifth arrangement direction

[0040] D6 Sixth arrangement direction

[0041] DAa First display area

[0042] DAb Second display area

[0043] L1 First imaginary line

[0044] L2 Second imaginary line (imaginary line)

[0045] L3 Third imaginary line

[0046] P1 First pitch

[0047] P2 Second pitch

[0048] S Sub-pixel

[0049] Sα First sub-pixel

[0050] Sβ Second sub-pixel

[0051] Sγ Third sub-pixel

[0052] θ1 First angle

[0053] θ2 Second angle

[0054] θ3 Third angle

[0055] θ4 Fourth angle Detailed implementation manners

[0056] Hereinafter, each embodiment of the present disclosure will be described with reference to the accompanying drawings. The present disclosure is not limited by the content described in the following embodiments. In addition, the constituent elements described below include constituent elements that are substantially the same and can be easily conceived by those skilled in the art. Moreover, the constituent elements described below can be appropriately combined.

[0057] In addition, the present disclosure is merely an example, and appropriate changes that maintain the gist of the present disclosure and are easily conceived by those skilled in the art are of course included in the scope of the present disclosure. In addition, for the sake of clarity of the description, the width, thickness, shape, etc. of each part of the schematic drawings are sometimes shown schematically compared with the actual form, but this is merely an example and does not limit the interpretation of the present disclosure. In addition, in this specification and each figure, sometimes the same reference numerals are given to elements that are the same as those already described in the accompanying drawings, and the detailed description is appropriately omitted.

[0058] Figure 1 is a perspective view of the display system 1 according to an embodiment of the present disclosure. Figure 2 is a schematic diagram showing the configuration of the display system 1. The display system 1 is, for example, a head-mounted display. The display system 1 displays images such as computer graphics images and 360-degree real-shot images, for example.

[0059] The display system 1 includes a wearable unit 2 , a video signal source 3 , two lenses 4 , and a display device 5 .

[0060] In addition, the X1 direction, Y1 direction and Z1 direction shown in the drawings are orthogonal to each other, indicating the direction of the main body 2a of the wearable portion 2. The X1 direction, Y1 direction and Z1 direction are equivalent to the width direction, height direction and thickness direction of the main body 2a. In addition, the X1 direction, Y1 direction and Z1 direction are examples, and the present disclosure is not limited to these directions. In addition, in this specification, the side indicated by the arrow indicating the direction shown in the drawings is set as the + side of the direction, and the opposite side of the side indicated by the arrow is set as the - side.

[0061] The wearable part 2 is, for example, earphones, goggles, a helmet, a mask, etc. The wearable part 2 includes a main body 2a and a belt 2b. The main body 2a is provided with an image signal source 3, two lenses 4, and a display device 5. The belt 2b is wound around the head of the user in order to fix the main body 2a to the head of the user. The wearable part 2 is worn on the head of the user in a state where the main body 2a covers both eyes of the user.

[0062] 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 between the user's binoculars. The two images are an image for the user's right eye and an image for the user's left eye. The image signal source 3 outputs an image previously stored inside to the display device 5. The image signal source 3 includes, for example, an HDD (Hard disk drive) and a flash memory. In addition, the image signal source 3 may be located outside the wearable portion 2. In this case, the image signal source 3 is a computer (e.g., a server) electrically connected to the display device 5 by wire or wireless.

[0063] The two lenses 4 are arranged at positions opposite to the user's eyes E. The lenses 4 are, for example, convex lenses made of glass. The two lenses 4 correspond to the user's eyes. The lenses 4 are arranged between the display device 5 and the user's eyes E. Due to the lens effect of the lenses 4, the light emitted from the display device 5 is focused on the user's eyes E. The user visually confirms (visually observes) the image displayed on the display device 5 after being magnified.

[0064] The display device 5 is arranged on the opposite side to the eye E of the user via the two lenses 4 .

[0065] Figure 3 2 is a diagram showing the arrangement of the display device 5 in the wearable unit 2. The display system 1 includes two display devices 5. That is, the display system 1 includes a first display device 5a and a second display device 5b.

[0066] The first display device 5a acquires an image for the left eye from the image signal source 3. The first display area DAa of the first display device 5a faces the left eye of the user 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 second display area Dab of the second display device 5b faces the right eye of the user and displays the image for the right eye. Further, the first display area DAa and the second display area Dab are planar and located on the same plane orthogonal to the Z1 direction.

[0067] In this way, by disposing the first display device 5a and the second display device 5b, the direction in which the first display area DAa and the second display area DAb are arranged corresponds to the left-right direction of the user's glasses. Further, the direction in which the first display area DAa and the second display area DAb are arranged corresponds to the left-right direction of the main body portion 2a, that is, corresponds to the X1 direction.

[0068] In addition, in Figure 3 an arrow indicating the direction of the first display device 5a and the second display device 5b is shown (the details will be described later). Hereinafter, when the first display device 5a and the second display device 5b are not distinguished and described, they are simply referred to as "display device 5".

[0069] Figure 4 FIG. is a diagram showing the configuration of the first display device 5a. Figure 5 FIG. is a side view of the first display device 5a.

[0070] Hereinafter, the X2 direction, the Y2 direction, and the Z2 direction shown in the drawings are orthogonal to each other and represent the direction of the first display device 5a. The X2 direction and the Y2 direction correspond to the directions parallel to the main surface of the substrate included in the first display device 5a. The Z2 direction corresponds to the direction orthogonal to the main surface of the substrate included in the first display device 5a. Further, the Z2 direction corresponds to the thickness direction of the first display device 5a, and the side indicated by the arrow in the Z2 direction (+ side) corresponds to the front surface side on which the image is displayed in the first display device 5a, and the opposite side (- side) corresponds to the back surface side of the first display device 5a. Further, observing the display device 5 along the Z2 direction is referred to as "top view". In addition, the X2 direction, the Y2 direction, and the Z2 direction are an example, and the present disclosure is not limited to these directions.

[0071] The first display device 5a includes a display panel 10 and a lighting device 20.

[0072] The display panel 10 is a transmissive liquid crystal display. In addition, the display panel 10 may be, for example, a display using an organic EL display and an inorganic light-emitting material.

[0073] The front surface of the display panel 10 has a first display area DAa where an image is displayed. The front surface of the display panel 10 is orthogonal to the Z2 direction. The first display area DAa is polygonal in plan view, but may be rectangular.

[0074] In the first display area DAa, a plurality of sub-pixels S are arranged. The plurality of sub-pixels S are arranged in a matrix along a first arrangement direction D1 and a second arrangement direction D2 in plan view. The first arrangement direction D1 and the second arrangement direction D2 are orthogonal to each other. The first arrangement direction D1 is parallel to the X2 direction. The second arrangement direction D2 is parallel to the Y2 direction. In addition, the first arrangement direction D1 may be inclined with respect to the X2 direction. The details of the sub-pixel S will be described in detail later.

[0075] The lighting device 20 is disposed on the back side of the display panel 10 and emits light toward the display panel 10. The lighting device 20 is a so-called direct-lit backlight. The lighting device 20 includes, for example, a plurality of light-emitting diodes.

[0076] Figure 6 It 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 respectively provided for the plurality of sub-pixels S.

[0077] The driving circuit 11 causes the first display area DAa to display an image. The driving circuit 11 includes a signal processing circuit 11a, a signal output circuit 11b, and a scanning circuit 11c.

[0078] The signal processing circuit 11a generates a plurality of sub-pixel signals described later based on the image signal sent from the video signal source 3, and outputs the generated plurality of 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 the signal output circuit 11b and the scanning circuit 11c.

[0079] The signal output circuit 11b outputs the plurality of sub-pixel signals to the corresponding sub-pixels S respectively. The signal output circuit 11b is electrically connected to the plurality of sub-pixels S via a plurality of signal lines Lb extending along the second arrangement direction D2.

[0080] The scanning circuit 11c scans the plurality of sub-pixels S in synchronization with the output of the sub-pixel signals by the signal output circuit 11b. The scanning circuit 11c is electrically connected to the plurality of sub-pixels S via a plurality of scanning lines Lc extending along the first arrangement direction D1.

[0081] When viewed from above, the region defined by two signal lines Lb adjacent to each other in the first arrangement direction D1 and two scan lines Lc adjacent to each other in the second arrangement direction D2 corresponds to one sub-pixel S.

[0082] The switching element SW is formed of, for example, 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.

[0083] The sub-pixel electrode PE is connected to the drain electrode of the switching element SW. A plurality of common electrodes CE are arranged corresponding to a plurality of scan lines Lc. The sub-pixel electrode PE and the common electrode CE have light-transmitting properties.

[0084] The liquid crystal capacitor LC is the capacitance component of the liquid crystal material of the liquid crystal layer 13 described later located between the sub-pixel electrode PE and the common electrode CE. The holding capacitor CS is arranged between the electrode having the same potential as the common electrode CE and the electrode having the same potential as the sub-pixel electrode PE.

[0085] Figure 7 It 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.

[0086] The first substrate 12, the liquid crystal layer 13, and the second substrate 14 each have light-transmitting properties and are arranged in this order from the - side to the + side in the Z2 direction along the Z2 direction. An IC chip Ti ( Figure 4 , Figure 5 ) constituting the drive circuit 11 is arranged on the first substrate 12.

[0087] The signal line Lb and the scan line Lc (not shown in Figure 7 ) are arranged on the main surface 12a corresponding to the front surface of the first substrate 12. In addition, a color filter CF is arranged on the main surface 12a of the first substrate 12. The color filter CF has a rectangular shape when viewed from above, and one is arranged in each of the plurality of sub-pixels S.

[0088] The color filter CF has light-transmitting properties, and the peak of the spectrum of the transmitted light is specified in advance. The peak of the spectrum is one of the three peaks of the spectra corresponding to three different colors. The three colors are red, green, and blue, but of course the number and types of colors are not limited to this. Hereinafter, the color corresponding to the peak of the spectrum of the light transmitted by the color filter CF is referred to as the color of the color filter CF. The color of the color filter CF corresponds to the color of the sub-pixel S.

[0089] In addition, in the first substrate 12, a sub-pixel electrode PE is disposed on the + side in the Z2 direction with respect to the color filter CF and the signal line Lb, with an insulating layer IL1 therebetween. The sub-pixel electrode PE coincides with the color filter CF in the Z2 direction.

[0090] Moreover, in the first substrate 12, a light-shielding film SM, a common electrode CE, and an alignment film AL are disposed on the + side in the Z2 direction with respect to the sub-pixel electrode PE, with an insulating layer IL2 therebetween.

[0091] The light-shielding film SM has light-shielding properties. The light-shielding film SM coincides with the signal line Lb and the scanning line Lc in the Z2 direction. That is to say, the light-shielding film SM demarcates a plurality of sub-pixels S. In other words, the light-shielding film SM coincides with the boundary between two adjacent sub-pixels S in the first arrangement direction D1 and the second arrangement direction D2 in the Z2 direction.

[0092] The common electrode CE is laminated on the light-shielding film SM and has a slit SL, and is disposed so as to straddle two adjacent sub-pixel electrodes PE in a plan view. In this way, the common electrode CE and the sub-pixel electrode PE are disposed on the first substrate 12. That is to say, the display panel 10 is a lateral electric field type liquid crystal display.

[0093] 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 that face each other in the Z2 direction. The orientation of the liquid crystal molecules LM is defined by the two alignment films AL. The alignment film AL is disposed on the back side of the second substrate 14.

[0094] In addition, the display panel 10 further 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.

[0095] The first polarizer 15 has a transmission axis orthogonal to the Z2 direction. The second polarizer 16 has a transmission axis orthogonal to the transmission axis of the first polarizer 15 and the Z2 direction.

[0096] Next, the operation of the first display device 5a when an image is displayed in the first display area DAa will be described. When the first display device 5a acquires an image signal transmitted from the video signal source 3, it displays an image in the first display area DAa.

[0097] The image signal includes the gray levels of the sub-pixels S corresponding to the image. The driving circuit 11 generates a sub-pixel signal representing the gray level of the sub-pixel S and outputs the sub-pixel signal to the sub-pixel S. As a result, a voltage corresponding to the gray level 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 tilt degree of the liquid crystal molecules LM varies according to the gray level represented by the sub-pixel signal.

[0098] Light from the lighting device 20 is incident on the display panel 10. The light incident on the display panel 10 is colored by passing through the color filter CF, and then is 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 to the gray level represented by the sub-pixel signal. Moreover, 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 DAa.

[0099] Next, the arrangement of the plurality of sub-pixels S in the first display area DAa will be described.

[0100] Figure 8 It is a top view of the first display area DAa showing the arrangement of the plurality of sub-pixels S in the first display area DAa of the first display device 5a. Figure 8 The plurality of sub-pixels S shown are a part of the plurality of sub-pixels S arranged on the first display area DAa. In addition, Figure 8 The plurality of sub-pixels S shown are shown using the color filter CF and the light-shielding film SM. In a top view, the plurality of sub-pixels S are divided by the light-shielding film SM, and the color filter CF is rectangular.

[0101] In addition, for the sake of convenience of explanation, Figure 3 The first display area DAa shown is shown with the X1 direction shown being parallel to the first arrangement direction D1. Figure 8 The X1 direction and the Y1 direction are also shown in Figure 8 .

[0102] The plurality of sub-pixels S have the same rectangular shape in a top view. As described above, the plurality of sub-pixels S are arranged in a matrix along each of the first arrangement direction D1 and the second arrangement direction D2 in a top view.

[0103] Hereinafter, the distance between the centers C of two adjacent sub-pixels S in the first arrangement direction D1 among the plurality of sub-pixels S in a top view will be referred to as the first pitch P1, and the distance between the centers C of two adjacent sub-pixels S in the second arrangement direction D2 among the plurality of sub-pixels S will be referred to as the second pitch P2. In the present embodiment, the ratio of the second pitch P2 to the first pitch P1 is 4 / 3. In addition, the ratio of the second pitch P2 to the first pitch P1 can be 2. The ratio of the second pitch P2 to the first pitch P1 only needs to be 4 / 3 or more and less than 3.

[0104] A plurality of sub-pixels S include a plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ. Among the first sub-pixels Sα, the second sub-pixels Sβ, and the third sub-pixels Sγ, the colors of the color filters CF (i.e., the colors of the sub-pixels S) are 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 the sub-pixel S of red color. The second sub-pixel Sβ is the sub-pixel S of green color. The third sub-pixel Sγ is the sub-pixel S of blue color. In addition, the color of the sub-pixel S is of course not limited to this.

[0105] Hereinafter, when explaining without distinguishing the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ, it may be simply referred to as "sub-pixel S".

[0106] In the first display area DAa, a plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are arranged as Figure 8 shown. Figure 8 The arrangement of the shown sub-pixels S is a so-called mosaic arrangement. Specifically, in a plan view, along the first arrangement direction D1 from the - side to the + side of the first arrangement direction D1, these sub-pixels are repeatedly arranged in the order of the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ, and along the second arrangement direction D2 from the - side to the + side of the second arrangement direction D2, these sub-pixels are repeatedly arranged in the order of the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ.

[0107] In Figure 8 the shown mosaic arrangement, the sub-pixels S of the same color are continuously arranged along a third arrangement direction D3 that is inclined with respect to the first arrangement direction D1 and the second arrangement direction D2. That is, in a plan view, a plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are respectively continuously arranged along the third arrangement direction D3.

[0108] In addition, in Figure 8 a first imaginary line L1 and a second imaginary line L2 are shown. The first imaginary line L1 is a straight line connecting the center points C of a plurality of first sub-pixels Sα that are continuously arranged along the third arrangement direction D3. The extending direction of the first imaginary line L1 is parallel to the third arrangement direction D3. A plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are respectively continuously arranged along the first imaginary line L1. In Figure 8 a plurality of first imaginary lines L1 are shown.

[0109] The second imaginary line L2 is a straight line passing through the center point C of the first sub-pixel Sα and parallel to the Y1 direction indicating the direction of the main body portion 2a of the wearing portion 2. InFigure 8 A second imaginary line L2 is shown.

[0110] In addition, in the stripe arrangement which is one of the arrangements of the sub-pixels S, these sub-pixels are repeatedly arranged in the order of the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ along the first arrangement direction D1 from the - side to the + side of the first arrangement direction D1, and the sub-pixels S of the same color are arranged in a continuous state in the second arrangement direction D2. Further, in the stripe arrangement, the ratio of the second pitch P2 to the first pitch P1 is 3. Therefore, with respect to this ratio, the mosaic arrangement is smaller than the stripe arrangement. Thus, compared with the stripe arrangement, the mosaic arrangement can obtain a finer image.

[0111] Next, the configuration of the second display device 5b will be described. The second display device 5b is configured in the same manner as the above-described first display device 5a except for the arrangement of the sub-pixels S. That is, in a plan view, the shape and size of the second display area DAb of the second display device 5b are the same as the shape and size of the first display area DAa of the first display device 5a.

[0112] Figure 9 FIG. is a plan view of the second display device 5b showing the arrangement of a plurality of sub-pixels S in the second display area DAb of the second display device 5b. Figure 9 The plurality of sub-pixels S shown are a part of the plurality of sub-pixels S arranged in the second display area Dab. Figure 9 The plurality of sub-pixels S shown are the same as Figure 8 The plurality of sub-pixels S shown are shown using a color filter CF and a light-shielding film SM.

[0113] In addition, for ease of explanation, Figure 3 The second display area Dab is shown with the X1 direction shown being parallel to the first arrangement direction D1. In Figure 9 The X1 direction and the Y1 direction are also shown. Figure 9 In it, the X1 direction and the Y1 direction are also shown.

[0114] In the second display area DAb, similar to the first display area DAa, a plurality of sub-pixels S are also arranged in a matrix along the first arrangement direction D1 and the second arrangement direction D2.

[0115] In addition, in the second display area DAb, a plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are arranged as Figure 9 shown. Figure 9The arrangement of the sub-pixels S shown is a mosaic arrangement. Specifically, in a top view, along the first arrangement direction D1 from one side of the first arrangement direction D1 to the + side, these sub-pixels are repeatedly arranged in the order of the first sub-pixel Sα, the second sub-pixel Sβ, and the third sub-pixel Sγ, and along the second arrangement direction D2, from one side of the second arrangement direction D2 to the + side, these sub-pixels are repeatedly arranged in the order of the first sub-pixel Sα, the third sub-pixel Sγ, and the second sub-pixel Sβ.

[0116] In Figure 9 the shown mosaic arrangement, the sub-pixels S of the same color are continuously arranged along a fourth arrangement direction D4 that is inclined with respect to the first arrangement direction D1 and the second arrangement direction D2 in a top view. That is, in a top view, a plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are respectively continuously arranged along the fourth arrangement direction D4.

[0117] In Figure 9 the second imaginary line L2 and the third imaginary line L3 are shown. The second imaginary line L2 is Figure 8 the shown second imaginary line L2, which is a straight line passing through the center point C of the first sub-pixel Sα and parallel to the Y1 direction. In Figure 9 one second imaginary line L2 is shown.

[0118] The third imaginary line L3 is a straight line connecting the center points C of a plurality of first sub-pixels Sα continuously arranged along the fourth arrangement direction D4. That is, the direction along which the third imaginary line L3 extends is parallel to the fourth arrangement direction D4. A plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are respectively continuously arranged along the third imaginary line L3. In Figure 9 a plurality of third imaginary lines L3 are shown.

[0119] In addition, the shape and size of the sub-pixels S of the first display device 5a are the same as the shape and size of the sub-pixels S of the second display device 5b. Moreover, in each of the first display area DAa and the second display area Dab, a plurality of sub-pixels S are arranged in a matrix along the first arrangement direction D1 and the second arrangement direction D2. Therefore, Figure 8 the first imaginary line L1 of Figure 9 and the third imaginary line L3 of Figure 8 are line-symmetric with the second imaginary line L2 as the axis of symmetry. In other words, Figure 9 the magnitude of the angle (the second angle θ2 described later) between the second arrangement direction D2 and the third arrangement direction D3 shown in

[0120] As described above, when the wearing unit 2 is worn on the user's head in a state covering both eyes, the distances between the first display area DAa and the second display area Dab and the user's eyes are relatively short. In this case, there may be a phenomenon where the user perceives the arrangement of the sub-pixels S as a grid pattern or a stripe pattern (so-called Screen Door Effect: hereinafter, sometimes referred to as SDE).

[0121] For example, when only red is displayed in the first display area DAa, the brightness of the first red sub-pixel Sα is greater than zero, and the brightnesses of the second green sub-pixel Sβ and the third blue sub-pixel Sγ are zero. Therefore, the first sub-pixel Sα displays red, and the second sub-pixel Sβ and the third sub-pixel Sγ display black. In addition, in the first display area DAa, as described above, a plurality of first sub-pixels Sα, a plurality of second sub-pixels Sβ, and a plurality of third sub-pixels Sγ are continuously arranged along the third arrangement direction D3, respectively. In this case, there may be an SDE where the user visually confirms (observes) a stripe pattern in which red columns and black columns are alternately arranged along the third arrangement direction D3.

[0122] Generally, in the human eye, the horizontal field of view is larger than the vertical field of view, and in the human eyeball, the horizontal movement is faster than the vertical movement. Therefore, in the display area, when red columns and black columns are alternately arranged as described above, the larger the interval between columns of the same color in the horizontal direction, the easier it is to visually confirm the stripe pattern. On the contrary, the smaller the interval between columns of the same color in the horizontal direction, the less likely it is to visually confirm the stripe pattern, and the generation of SDE can be suppressed. The horizontal and vertical directions of the human eye correspond to Figure 3 、 8 the X1 direction and the Y1 direction shown in FIGS. 9.

[0123] In Figure 8 the first display area DAa shown in FIGS., the distance in the X1 direction along two adjacent first imaginary lines L1 is defined as the first distance H1. As described above, the X1 direction corresponds to the horizontal direction of the human eye. That is, the first distance H1 corresponds to the distance between two adjacent sub-pixels S of the same color in the horizontal direction of the human eye.

[0124] In addition, in the first display area DAa, the distance between two adjacent first imaginary lines L1 is defined as the second distance H2. The second distance H2 corresponds to the distance between two adjacent sub-pixels S of the same color in the fifth arrangement direction D5 orthogonal to the third arrangement direction D3.

[0125] The plurality of sub-pixels S have the same shape and size as each other and are arranged in the above-mentioned mosaic arrangement. Therefore, in Figure 8Among them, the second distance H2 is shorter than the first distance H1. Therefore, when the first display area DAa rotates from the state where the X1 direction shown in Figure 8 is parallel to the first arrangement direction D1 to the direction where the X1 direction is parallel to the fifth arrangement direction D5, a plurality of first imaginary lines L1 rotate, and the first distance H1 becomes smaller. Therefore, the distance between two sub-pixels S of the same color adjacent to each other in the left-right direction of the human eye becomes smaller. Thereby, the generation of SDE can be suppressed.

[0126] In addition, even if the first display area DAa rotates from the state where the X1 direction shown in Figure 8 is parallel to the first arrangement direction D1 to the direction where the X1 direction is parallel to the fifth arrangement direction D5, since a plurality of first imaginary lines L1 rotate, the second distance H2 does not change.

[0127] In addition, the second imaginary line L2 is parallel to the Y1 direction indicating the direction of the main body portion 2a of the wearing portion 2. Therefore, even if the first display area DAa rotates, the second imaginary line L2 does not rotate. Therefore, when the first display area DAa rotates from the state where the X1 direction shown in Figure 8 is parallel to the first arrangement direction D1 to the direction where the X1 direction is parallel to the fifth arrangement direction D5, it is the same as that the first angle θ1 between the Y1 direction (the second imaginary line L2) and the third arrangement direction D3 (the first imaginary line L1) becomes smaller.

[0128] In addition, in Figure 8 among them, the second angle θ2 between the second arrangement direction D2 and the third arrangement direction D3 is equal to the first angle θ1. Then, when the first display area DAa rotates around the Z2 direction toward the direction where the first angle θ1 becomes smaller (the first display area DAa rotates in the clockwise direction toward Figure 8 ), the first arrangement direction D1, the second arrangement direction D2, the third arrangement direction D3, and the fifth arrangement direction D5 rotate in the same way, and the second angle θ2 between the second arrangement direction D2 and the third arrangement direction D3 does not change.

[0129] That is, when the first display area DAa rotates around the Z2 direction toward the direction where the first angle θ1 becomes smaller (the first display area DAa rotates in the clockwise direction toward Figure 8 ), it is the same as that the first angle θ1 becomes smaller than the second angle θ2. Therefore, by arranging the first display device 5a on the wearing portion 2 with the orientation of the first display area DAa where the first angle θ1 is smaller than the second angle θ2, the generation of SDE can be suppressed.

[0130] Figure 10 is a diagram showing Figure 8 the state where the first display area DAa shown in Figure 8 rotates around the Z2 direction in the clockwise direction toward

[0131] In Figure 10 the first display area DAa shown, the second imaginary line L2 only coincides with three of the plurality of first sub-pixels Sα arranged continuously along the first imaginary line L1 (the third arrangement direction D3). Figure 10 The first angle θ1 of [[ID]] is the largest angle in the range where only these three first sub-pixels Sα coincide with the second imaginary line L2. Figure 10 The dashed line showing the second angle θ2 is parallel to the Y2 direction. In Figure 10 the first angle θ1 is smaller than the second angle θ2.

[0132] Figure 10 The first distance H1 of [[ID]] is smaller than Figure 8 the first distance H1 of [[ID]]. Therefore, in the above-mentioned mosaic arrangement, the generation of SDE can be suppressed.

[0133] Figure 11 is a diagram showing Figure 10 the state where the first display area DAa shown rotates clockwise about the Z2 direction toward Figure 10

[0134] In Figure 11 the first display area DAa shown, the second imaginary line L2 is parallel to the third arrangement direction D3. Additionally, in Figure 11 the first display area DAa shown, the fifth arrangement direction D5 is parallel to the X1 direction (the left-right direction of the human eye). Therefore, the first imaginary line L1 and the second imaginary line L2 overlap. In Figure 11 the first angle θ1 (not shown in Figure 11 ) is zero and smaller than the second angle θ2.

[0135] Figure 11 The first distance H1 of [[ID]] is equal to the second distance H2 and smaller than Figure 8 the first distance H1 of [[ID]]. Therefore, in the above-mentioned mosaic arrangement, the generation of SDE can be suppressed.

[0136] Figure 12 is a diagram showing Figure 11 the state where the first display area DAa shown rotates clockwise about the Z2 direction toward Figure 11

[0137] In Figure 12 the first display area DAa shown, the second imaginary line L2 only coincides with three of the plurality of first sub-pixels Sα arranged continuously along the first imaginary line L1 (the third arrangement direction D3). Figure 12 The first angle θ1 of [[ID]] is the largest angle in the range where only these three first sub-pixels Sα overlap with the second imaginary line L2. Figure 12 ​​The dashed line indicating the second angle θ2 shown is parallel to the Y2 direction. In Figure 12 the first angle θ1 is smaller than the second angle θ2.

[0138] Figure 12 the first distance H1 is smaller than Figure 8 the first distance H1. Therefore, in the above-described mosaic arrangement, generation of SDE can be suppressed.

[0139] When the first display area DAa rotates within the range from the Figure 10 first display area DAa shown to the Figure 12 first display area DAa shown, the second imaginary line L2 coincides with at least three of the first sub-pixels Sα among the plurality of first sub-pixels Sα continuous along the third arrangement direction D3 in a plan view. That is, in this case, the first angle θ1 is defined as the angle at which at least three of the plurality of sub-pixels S continuously arranged along the third arrangement direction D3 coincide with the second imaginary line L2. In this case, the first angle θ1 can reliably be smaller than the second angle θ2, and generation of SDE can be reliably suppressed.

[0140] In addition, the first angle θ1 only needs to be smaller than the second angle θ2, and it may be defined by an angle other than the angle at which at least three sub-pixels S continuously arranged along the third arrangement direction D3 coincide with the second imaginary line L2 (for example, the angle at which only two sub-pixels S continuously arranged along the third arrangement direction D3 coincide with the second imaginary line L2).

[0141] That is, the first display device 5a is arranged on the main body portion 2a of the wearing portion 2 with the first display area DAa having the first angle θ1 smaller than the second angle θ2. In addition, as Figure 11 shown, Figure 3 the first display device 5a shown is arranged on the wearing portion 2 with the first display area DAa having the first angle θ1 being zero (the third arrangement direction D3 is parallel to the Y1 direction). In this case, the X2 direction is inclined with respect to the X1 direction, and the Y2 direction is inclined with respect to the Y1 direction.

[0142] In addition, the image displayed in the first display area DAa is displayed with the left - right direction and the up - down direction of the image being the X1 direction and the Y1 direction of the main body portion 2a of the wearing portion 2. That is, the left - right direction and the up - down direction of the image displayed in the first display area DAa are inclined with respect to the X2 direction (the first arrangement direction D1) and the Y2 direction (the second arrangement direction D2) of the first display device 5a.

[0143] In addition, as described above, the first angle θ1 is smaller than the second angle θ2. In other words, compared with the Figure 8 third arrangement direction D3 shown,Figure 10 , 11 , the angle (first angle θ1) formed by the third arrangement direction D3 shown in 12 and the Y1 direction of the wearing part 2 is smaller, and compared with Figure 8 the fifth arrangement direction D5 shown in Figure 10 , 11 , the angle formed by the fifth arrangement direction D5 shown in 12 and the X1 direction of the wearing part 2 is smaller.

[0144] Therefore, when the first angle θ1 is smaller than the second angle θ2 as in the first display area DAa shown in Figure 10 , 11 12, compared with the case where the first angle θ1 and the second angle θ2 are equal in the display area shown in Figure 8 , it is possible to suppress the phenomenon (so-called jaggedness) in which the outline of the elements included in the image of the first display area DAa is visually recognized by the user as zigzag.

[0145] On the other hand, in the second display device 5b, similarly to the first display device 5a described above, it is possible to suppress the occurrence of SDE by using the orientation of the second display area DAb.

[0146] Specifically, in the second display area DAb shown in Figure 9 , by making the third angle θ3 between the Y1 direction (second imaginary line L2) and the fourth arrangement direction D4 (third imaginary line L3) smaller, the third distance H3 along the X1 direction between two adjacent third imaginary lines L3 becomes smaller, and the occurrence of SDE can be suppressed.

[0147] In the second display area DAb, the distance between two adjacent third imaginary lines L3 is defined as the fourth distance H4. The fourth distance H4 corresponds to the distance between two sub-pixels S of the same color adjacent to each other in the sixth arrangement direction D6 orthogonal to the fourth arrangement direction D4.

[0148] In Figure 9 , the fourth angle θ4 between the second arrangement direction D2 and the fourth arrangement direction D4 is equal to the third angle θ3. In addition, when the second display area DAb rotates around the Z2 direction in the direction in which the third angle θ3 becomes smaller (the second display area DAb rotates in the counterclockwise direction towards Figure 9 ), the first arrangement direction D1, the second arrangement direction D2, the fourth arrangement direction D4, and the sixth arrangement direction D6 rotate in the same way, and the fourth angle θ4 between the second arrangement direction D2 and the fourth arrangement direction D4 does not change.

[0149] That is, the second display area DAb rotates around the Z2 direction in the direction in which the third angle θ3 becomes smaller (the second display area DAb faces Figure 9(rotated counterclockwise), the third angle θ3 becomes smaller than the fourth angle θ4 in the same way. Therefore, by arranging the second display device 5b in the wearing part 2 with the orientation of the second display area DAb where the third angle θ3 is smaller than the fourth angle θ4, the generation of SDE can be suppressed.

[0150] That is, the second display device 5b is arranged in the main body part 2a of the wearing part 2 with the orientation of the second display area DAb where the third angle θ3 is smaller than the fourth angle θ4. In addition, Figure 3 The second display device 5b shown is arranged in the wearing part 2 with the orientation of the second display area DAb where the third angle θ3 is zero (the fourth arrangement direction D4 is parallel to the Y1 direction). In this case, the X2 direction is inclined with respect to the X1 direction, and the Y2 direction is inclined with respect to the Y1 direction.

[0151] In addition, the third angle θ3 is defined as the angle at which at least three sub-pixels S arranged continuously along the fourth arrangement direction D4 coincide with the second imaginary line L2. In this case, the third angle θ3 is reliably smaller than the fourth angle θ4, and the generation of SDE can be reliably suppressed.

[0152] Above, the preferred embodiments of the present disclosure have been described, but the present disclosure is not limited to such embodiments. The content disclosed in the embodiments is merely an example, and various changes can be made without departing from the gist of the present disclosure. Appropriate changes made without departing from the gist of the present disclosure also certainly belong to the technical scope of the present disclosure.

[0153] For example, the first display area DAa of the first display device 5a can face the user's right eye and display an image for the right eye. The second display area Dab of the second display device 5b can face the user's left eye and display an image for the left eye.

[0154] In addition, the display system 1 can include the first display device 5a instead of the second display device 5b. In addition, the display system 1 can include the second display device 5b instead of the first display device 5a.

[0155] In addition, the above display panel 10 can be a vertical electric field type liquid crystal display in which the common electrode CE is arranged opposite to a plurality of sub-pixel electrodes PE on the second substrate 14. In addition, the display panel 10 can be a reflective liquid crystal display.

[0156] Figure 13 It is a diagram showing the arrangement of the display device 5 in the wearing part 2 which is a modified example of the embodiment of the present disclosure.

[0157] In this modified example, the first display device 5a is as Figure 8The first display area DAa with the second arrangement direction D2 parallel to the Y1 direction is arranged facing the main body 2a of the wearing part 2. In this case, the X2 direction is parallel to the X1 direction, and the Y2 direction is parallel to the Y1 direction.

[0158] In addition, the second display device 5b is arranged Figure 9 facing the main body 2a of the wearing part 2 with the second display area DAb having the second arrangement direction D2 parallel to the Y1 direction. In this case, the X2 direction is parallel to the X1 direction, and the Y2 direction is parallel to the Y1 direction.

[0159] Furthermore, the first arrangement direction D1 corresponds to the "first direction". The second arrangement direction D2 corresponds to the "second direction". The third arrangement direction D3 corresponds to the "third direction". The X1 direction corresponds to the "fourth direction". The Y1 direction corresponds to the "fifth direction". The fourth arrangement direction D4 corresponds to the "sixth direction". The second imaginary line L2 corresponds to the "imaginary line".

[0160] In addition, regarding other effects brought about by the forms described in the present embodiment, the effects clearly obtained from the description in this specification, or the effects that can be appropriately conceived by those skilled in the art should of course also be understood to be brought about by the present disclosure.

Claims

1. A display system, characterized in that, Comprising: a wearing part worn on the user's head in a state covering the user's both eyes; a first display device disposed in the wearing part and having a first display area opposite to one of the user's two eyes; a second display device disposed in the wearing part and having a second display area opposite to the other of the user's two eyes; and a driving circuit for causing the first display area and the second display area to display images, in the first display area and the second display area, a plurality of sub-pixels are arranged in a matrix along respective directions of a first direction and a second direction orthogonal to each other in a plan view, the plurality of sub-pixels include a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels having different colors from each other, in the first 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the second direction, the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are continuously arranged along a third direction inclined with respect to the first direction and the second direction, and in a plan view, a first angle between a fifth direction and the third direction is smaller than a second angle between the second direction and the third direction, and the fifth direction is orthogonal to a fourth direction in which the first display area and the second display area are arranged.

2. The display system according to claim 1, wherein the first angle is defined as an angle at which at least three sub-pixels among the plurality of sub-pixels continuously arranged along the third direction coincide with an imaginary line extending along the fifth direction.

3. The display system according to claim 1, wherein in the second 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the third sub-pixel, and the second sub-pixel along the second direction, the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels are continuously arranged along a sixth direction different from the third direction inclined with respect to the first direction and the second direction, and in a plan view, a third angle between the fifth direction and the sixth direction is smaller than a fourth angle between the second direction and the sixth direction.

4. The display system according to claim 1, wherein in a plan view, a ratio of a second pitch between two sub-pixels adjacent to each other in the second direction to a first pitch between two sub-pixels adjacent to each other in the first direction among the plurality of sub-pixels is 4 / 3 or more and less than 3.

5. The display system according to claim 1, wherein: 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.

6. A display system, characterized in that, comprising: a first display device having a first display area opposite to one of the user's two eyes; a second display device having a second display area opposite to the other of the user's two eyes; and a driving circuit for causing the first display area and the second display area to display images, in the first display area and the second display area, a plurality of sub-pixels are arranged in a matrix along respective directions of a first direction and a second direction orthogonal to each other in a plan view, the plurality of sub-pixels include a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels having different colors from each other, in the first 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the second direction, in the second 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 of repeating in the order of the first sub-pixel, the second sub-pixel, and the third sub-pixel along the first direction, and are arranged in a state of repeating in the order of the first sub-pixel, the third sub-pixel, and the second sub-pixel along the second direction.

Images