Display devices and clocks

Abstract

To provide a display device and a timepiece which can confirm the waterproof property in a waterproof test in a region corresponding to a display region and can achieve the high visibility.SOLUTION: In a display device, a windshield member 31, a solar panel 32 which is arranged without interposing a layer of the air between the windshield member 31 and itself on a lower part of the windshield member 31, a liquid crystal display 33 which is provided on the lower side of the solar panel 32 and has a display region that can be visually recognized from the outside, an air layer 34 which is arranged between the solar panel and the liquid crystal display 33, and a light reflection prevention layer 35 which is provided on at least one of a surface contacting the air layer 34 in the solar panel 32 and a surface contacting the air layer 34 in the liquid crystal display 33 are laminated in the visual recognition direction for visually recognizing the liquid crystal display 33 through the windshield member 31 and the solar panel 32. A region overlapped on a display region of the liquid crystal display 33 in the windshield member 31 functions as a window for waterproof inspection.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a display device and a timepiece. [Background technology]

[0003] Special In the patent document 1, The display device is disclosed in which, in order from the user's viewing side, a protective member (cover member) made of a light-transmitting material, a light-transmitting solar panel (transparent member including solar cells), and a display member (display unit including a liquid crystal panel) are arranged, with layers of air interposed between the protective member (cover member) and the light-transmitting solar panel (transparent member including solar cells), and between the light-transmitting solar panel (transparent member including solar cells) and the display member (display unit including a liquid crystal panel). It has been done. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-44869 Summary of the Invention [Problem to be solved by the invention]

[0005] however, If an air layer is present between the protective member (cover member) and the light-transmitting solar panel (transparent member including solar cells), or between the light-transmitting solar panel (transparent member 5 including solar cells) and the display member (display unit including LCD panel), light incident from the user's viewing side towards the display member (display unit including LCD panel) is reflected by the surface of the protective member (cover member) that comes into contact with the air layer, the surface of the light-transmitting solar panel (transparent member including solar cells) that comes into contact with the air layer, and the surface of the display member (display unit including LCD panel) that comes into contact with the air layer. This makes it difficult to see the display screen of the display member (display unit including LCD panel). It ends up like this.

[0006] The present invention has been made in view of the above circumstances. , high The object of the present invention is to provide a display device that can achieve high visibility and a timepiece equipped with the same. [Means for solving the problem]

[0007] In order to solve the above problems, the display device according to the present invention comprises: a protective member formed of a light-transmitting material; a light-transmitting solar panel disposed below the protective member without an air layer between the solar panel and the protective member; a display member provided below the light-transmitting solar panel and having a display area visible from the outside; an air gap disposed between the light-transmitting solar panel and the display member; an anti-reflection layer provided on at least one of a surface of the light-transmitting solar panel that contacts the air layer and a surface of the display member that contacts the air layer; are stacked 、 the antireflection layer has a moth-eye structure in which a plurality of small protrusions are arranged in a forested manner, When a plurality of the antireflection layers are provided, the arrangement patterns of the small protrusions in the moth-eye structure portions of the antireflection layers are aligned. It is characterized by:

[0008] A display device according to another aspect of the present invention includes: a protective member formed of a light-transmitting material; a light-transmitting solar panel disposed below the protective member; a display member provided below the light-transmitting solar panel without any air gap between the display member and the light-transmitting solar panel, the display member having a display area visible from the outside; an air layer disposed between the protective member and the light-transmitting solar panel; an anti-reflection layer provided on at least one of a surface of the protective member that contacts the air layer and a surface of the light-transmitting solar panel that contacts the air layer; are stacked 、 the antireflection layer has a moth-eye structure in which a plurality of small protrusions are arranged in a forested manner, When a plurality of the antireflection layers are provided, the arrangement patterns of the small protrusions in the moth-eye structure portions of the antireflection layers are aligned. It is characterized by:

[0009] A timepiece according to another aspect of the present invention comprises: A display device according to any one of claims 1 to 14; a case member that houses the display device; The present invention is characterized by comprising: [Effects of the Invention]

[0010] According to the present invention , high This brings about the effect of realizing high visibility. [Brief explanation of the drawings]

[0011] [Figure 1]FIG. 2 is a front view of the timepiece according to the embodiment. [Figure 2] 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. [Figure 3] FIG. 10 is a schematic cross-sectional view showing how light is reflected at the boundary with an air layer. [Figure 4] FIG. 2 is a plan view of the solar panel according to the present embodiment. [Figure 5] FIG. 10 is a plan view of a modified example of the solar panel according to the present embodiment. [Figure 6] FIG. 1A is a perspective view showing an example of the configuration of an antireflection layer in this embodiment, and FIG. 1B is a cross-sectional view taken along line bb in FIG. [Figure 7] 1A and 1B are schematic diagrams showing examples of the arrangement of cutting dies when cutting out the substrate constituting the antireflection layer in this embodiment from a roll-shaped sheet, where (a) shows the case of the substrate of the antireflection layer arranged on the liquid crystal display side, and (b) shows the case of the substrate of the antireflection layer arranged on the solar panel side. [Figure 8] FIG. 2 is an explanatory diagram showing a schematic arrangement of a display member, an anti-reflection layer, and a clock. [Figure 9] FIG. 10 is a schematic cross-sectional view showing a modified example of the display device according to the present embodiment. [Figure 10] 1A and 1B are schematic diagrams showing substrates constituting an antireflection layer in one modified example of this embodiment, where (a) shows the substrate of the antireflection layer arranged on the liquid crystal display side, and (b) shows the substrate of the antireflection layer arranged on the solar panel side. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of a display device according to the present invention and a timepiece to which the same is applied will be described with reference to FIGS. It should be noted that the embodiments described below are subject to various limitations that are technically preferable for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0013] FIG. 1 is a front view showing a timepiece according to this embodiment. As shown in Figure 1, the watch 100 of this embodiment has a case member (hereinafter referred to as "watch case 1" in this embodiment). The watch case 1 is made of a hard material, such as a hard synthetic resin such as engineering plastic or super engineering plastic, a metal such as titanium or stainless steel (SUS), or ceramic. Note that the materials from which the watch case 1 is made are not limited to those exemplified here.

[0014] The watch case 1 of this embodiment is formed in the shape of a hollow short pillar that is open on the top and bottom in the thickness direction of the case (on the front and back of the watch). An exterior member 12 such as a bezel is provided on the front side (the viewing side, or upper side of the watch) of the watch case 1 so as to surround the opening. Note that the shape of the exterior member 12 is not limited to the example shown in the figures. Furthermore, it is not essential to provide the exterior member 12, and the watch may be configured without the exterior member 12. A windshield member 31, which serves as a protective member for the display device 3 (described later), is provided at the opening on the front side of the watch case 1 so as to close the opening. Additionally, a back cover (not shown) is attached to the rear side of the watch case 1 to close the opening. In this embodiment, the crystal member 31 that covers the opening on the front side of the watch case 1 and the back cover that covers the opening on the back side are attached to the watch case 1 via a waterproof ring 121 (see Figure 2, etc.), etc., and are configured to ensure waterproofness (airtightness) inside the watch case 1.

[0015] At both the top and bottom ends of the watch case 1 in FIG. 1, i.e., the ends at the 12 o'clock position and the 6 o'clock position in an analog watch, there are provided band attachment portions 13 to which a watch band (not shown) can be attached. The watch 100 also has operation buttons 14 on the sides of the watch case 1. In the example shown in Figure 1, four push buttons are arranged as operation buttons 14, two on each side of the watch case 1. In addition, the watch case 1 in this embodiment houses the display device 3 and a module (not shown) that operates each part of the display device 3 (a clock module including a timing circuit, which is a timing part that performs timing processing).

[0016] Next, the display device 3 of this embodiment will be described with reference to FIG. FIG. 2 is a schematic cross-sectional view showing the configuration of the main part of the display device according to this embodiment. As shown in Figure 2, the display device 3 of this embodiment includes a windshield member 31 as a protective member, a solar panel 32 arranged in contact with the lower part of the windshield member 31, and a display member 33 provided below the solar panel 32. A gap is provided between the solar panel 32 and the display member 33, and this gap serves as an air layer 34. The air layer 34 is not an enclosed space, but is a space that communicates with the display device 3 and, by extension, the interior of the watch case 1 in which the display device 3 is housed. Anti-reflection layers 35 and 36 are provided on the surface of the solar panel 32 that comes into contact with the air layer 34 (the lower surface of the solar panel 32 in Figure 2) and the surface of the display member 33 that comes into contact with the air layer 34 (the upper surface of the display member 33 in Figure 2), respectively. In this embodiment, the windshield member 31, solar panel 32, anti-reflection layer 35, air layer 34, anti-reflection layer 36, and display member 33 are stacked in a viewing direction Vd (a direction from top to bottom in Figure 2, indicated by the white arrow in the figure) in which the display member 33 is viewed through the windshield member 31 and the solar panel 32.

[0017] The crystal member 31 is made of a light-transmitting material such as transparent glass. As mentioned above, the crystal member 31 is attached to the watch case 1 via a waterproof ring or the like (not shown), and closes the opening on the front side of the watch case 1 while keeping the watch case 1 airtight. As shown in Fig. 2, in this embodiment, a decorative portion 311 is provided along the outer periphery of the back side (the lower side in Fig. 2) of the windshield member 31. The decorative portion 311 is a portion on which, for example, various numbers, letters, scales, patterns, etc. are applied, and is applied by various printing processes, vapor deposition processes, etc. The decorative portion 311 is positioned on the viewing side of the display member 33 in the stacking direction (viewing direction Vd), and may function as a shielding processing portion as a visibility restriction portion that restricts areas other than the display area VAr (see Figure 2) on the display member 33 from being visible from the outside.

[0018] In this embodiment, the solar panel 32 is a light-transmitting solar panel, as will be described later, and is a plate-shaped light-transmitting member. The solar panel 32 is attached to the back side of the windshield member 31 by an adhesive layer 312 made of, for example, an optical adhesive (highly transparent adhesive sheet: Optical Clear Adhesive, OCA), which is a film-shaped adhesive. The method for arranging the solar panel 32 on the back side of the windshield member 31 is not limited to the example given above. The solar panel 32 may be arranged below the windshield member 31 serving as a protective member without an air layer between it and the windshield member 31, i.e., without leaving any gaps, and may be provided by a method other than adhesion. Further, the solar panel 32 is provided with alignment marks (not shown), for example, and is aligned with the windshield member 31 using an alignment machine or the like. The solar panel 32 has a power generation area 322 (see Figures 2 and 4) on the surface of the base material 321, which functions as a solar cell that generates electricity by receiving light, and the generated electricity obtained by photovoltaic power generation by the solar panel 32 is stored in a secondary battery (not shown).

[0019] Fig. 4 is a plan view showing an example of the solar panel 32 in this embodiment. Note that Fig. 4 is a schematic image diagram, and the positions of the lines separating each block, the thickness and number of the thin wire power generation units 322b, etc., which will be described later, do not strictly reproduce the actual shape. 4, the solar panel 32 of this embodiment has a power generating section 322 formed on a base material 321. The power generating section 322 has a layered structure in which a transparent electrode, a semiconductor layer, and a back electrode (not shown) are layered. The base material 321 is a thin plate-like substrate that is optically transparent, such as a flexible film-like transparent plastic, etc. The material forming the base material 321 is not limited to those exemplified here, but may be, for example, various transparent resins, glass, etc. Of the power generation section 322, a peripheral power generation section 322a divided into multiple solar cell blocks along the circumferential direction is provided on the outer periphery of the solar panel 32. The area where this peripheral power generation section 322a is arranged is referred to as the peripheral power generation area PAr. The entire peripheral power generation section 322a forms the power generation section 322, and is almost opaque to light. In this embodiment, the peripheral power generation area PAr where the peripheral power generation section 322a is formed is positioned closer to the viewer than the display member 33 in the stacking direction (viewing direction Vd), and functions as a shielding processed section that acts as a visibility restriction section that restricts the area of ​​the display member 33 other than the display area VAr (see FIG. 2) from being viewed from the outside.

[0020] A light-transmitting power-generating area SAr is formed in the area overlapping the display area VAr (see FIG. 2) of the display member 33, i.e., the area inside the peripheral power-generating area PAr, in the central portion in the surface direction of the solar panel 32. The light-transmitting power-generating region SAr is a region in which multiple thin-wire power-generating units 322b, which are thin-wire power-generating units 322 extending in a predetermined direction, are arranged in parallel in a direction perpendicular to the extending direction. In the light-transmitting power-generating region SAr, the thin-wire power-generating units 322b and the light-transmitting regions 323 are alternately arranged at a constant pitch.

[0021] It should be noted that the provision of the light-transmitting power-generating region SAr is not essential. When the solar panel 32 is a plate-shaped light-transmitting member, a power generation area (power generation section 322) may be configured in a portion of the solar panel 32 other than the area that overlaps with the display area VAr (see Figure 2) of the display member 33. 5, peripheral power generation units 322a that do not transmit light are provided along the circumferential direction on the outer periphery of a substrate 321 made of a light-transmitting material. In this case, the peripheral power generation area PAr, which is the area where the peripheral power generation units 322a are arranged, also functions as a shielding processed part, which is a visibility restricting part that restricts areas of the display member 33 other than the display area VAr (see FIG. 2) from being visible from the outside. Furthermore, in the area overlapping the display area VAr (see FIG. 2) of the display member 33, i.e., the area inside the peripheral power generation area PAr, and the central area in the surface direction of the solar panel 32, the power generation section 322 is not formed, and the base material 321 is left as it is, making it a light-transmitting area. In this case, the amount of power generation is somewhat lower, but the solar panel 32 can be manufactured more easily than when a light-transmitting power generation area SAr is formed.

[0022] The display member 33 is a display means including a liquid crystal display (LCD), an organic electroluminescence display, or other flat display, etc. The display member 33 is configured to display the time, various information, etc. In this embodiment, the display member 33 is exemplified by a liquid crystal display (LCD) 331. The liquid crystal display 331 may be a reflective liquid crystal display or a backlit transmissive liquid crystal display. For example, a memory in pixel (MIP) liquid crystal display employing MIP technology can be suitably applied as the liquid crystal display 331. When a MIP liquid crystal display is employed, since SRAM is built into each pixel, it is possible to continue displaying still images even when there is no input, which is preferable because it enables significant reduction in power consumption. Furthermore, the screen that can be displayed by the liquid crystal display 331 is not particularly limited, but it may be possible to display a screen with a white background, a screen with a black background that is an inversion of black and white, or to switch between these two. Furthermore, it may be possible to display not only monochrome but also color.

[0023] An upper polarizing plate 332 is disposed above the liquid crystal display 331, and a lower polarizing plate 333 is disposed below the liquid crystal display 331, so that the liquid crystal display 331 is sandwiched between the two polarizing plates. Furthermore, a wiring board 334 is connected to the liquid crystal display 331. When an MIP liquid crystal display is adopted as the liquid crystal display 331, a wiring board 334 corresponding to the MIP liquid crystal display is provided.

[0024] 2, the radial center of the display member 33 of the timepiece 100 is a display area VAr that is visible from the outside (i.e., an area other than the area where visibility is restricted by the outer peripheral power generation area PAr of the solar panel 32, which functions as a shielding portion). Various displays, such as the time display, are performed within this display area VAr.

[0025] The air layer 34 is necessary for carrying out a waterproof test to check whether the waterproofness of the display device 3, and therefore the watch 100, is ensured. That is, in the waterproof test, the device is submerged in water, and then a sudden temperature change is applied to the air inside the case, causing it to condense, to see whether or not condensation causes fogging on the crystal member 31 (protective member). As mentioned above, the air layer 34 is a space that communicates with the display device 3 and, ultimately, the interior of the watch case 1 in which the display device 3 is housed. Therefore, if condensation that occurs in the air layer 34 causes fogging on the crystal member 31, this means that water has flowed into the case due to submersion, and it is determined that the waterproofness is insufficient. If no fogging occurs, it is determined that the waterproofness is sufficient. If waterproofing is insufficient, fogging due to condensation will be particularly noticeable near the radial center of the display device 3 (watch 100). For this reason, in this embodiment, an area of ​​the windshield member 31 (protective member) that overlaps with the display area VAr of the display member 33, which corresponds to the radial center of the display device 3 (watch 100), is used as a window for waterproof testing, and the waterproof test checks whether fogging due to condensation occurs near the radial center of the display device 3 (watch 100).

[0026] However, if an air layer 34 for waterproof testing is provided in the area overlapping with the display area VAr of the display member 33 in this manner, light will be reflected at the boundary with the air layer 34 due to the difference in refractive index between the air layer 34 and other layers, which will result in a decrease in light transmittance and a decrease in the visibility of the display on the display member 33. Figure 3 is a schematic diagram showing how light is reflected at the boundary with an air layer when there is nothing between the air layer and another layer. In the figure, light is indicated by a dashed line. Note that components with the same reference numerals as in Figure 2 are the same as those in Figure 2, and their explanation will be omitted. 3, when the display device 4 is configured such that the windshield member 41, the solar panel 42, the air layer 44, and the display member 43 are stacked in a viewing direction Vd (a direction from top to bottom in FIG. 3, indicated by the outline arrow in the figure) in which the display member 43 is viewed, light incident toward the display member 43 from the viewing direction Vd is reflected by the surface of the solar panel 42 that contacts the air layer 44 and the surface of the display member 43 that contacts the air layer 44. In this case, the display screen of the display member 43 becomes difficult to see.

[0027] Therefore, in this embodiment, anti-reflection layers 35 and 36 are provided on the surface of the solar panel 32 that comes into contact with the air layer 34 and on the surface of the display member 33 that comes into contact with the air layer 34, respectively. The antireflection layers 35, 36 are attached to the surface of the solar panel 32 that comes into contact with the air layer 34 and the surface of the display member 33 that comes into contact with the air layer 34 by an adhesive layer (not shown) made of, for example, an adhesive or a pressure-sensitive adhesive sheet. The method for providing the antireflection layers 35, 36 on each surface is not particularly limited. FIG. 6(a) is a perspective view showing an example of the configuration of the antireflection layer in this embodiment, and FIG. 6(b) is a cross-sectional view taken along line bb in FIG. 6(a). 6(a) and 6(b), in this embodiment, the antireflection layers 35 and 36 have moth-eye structures 352 and 362. The moth-eye structures 352 and 362 are provided on the surfaces of the substrates 351 and 361.

[0028] The moth-eye structure portions 352 and 362 have a moth-eye structure in which a plurality of small protrusions 353 are arranged in a forest. That is, small protrusions 353 having a height of several hundred nanometers are formed at a period (pitch) of about 100 nanometers on the moth-eye structures 352, 362, forming a continuous uneven shape. With this structure, when light is incident on the moth-eye structures 352, 362, the refractive index can be continuously changed to suppress reflection.

[0029] In addition, when antireflection layers 35, 36 are provided on the surface of the solar panel 32 that comes into contact with the air layer 34 and the surface of the display member 33 that comes into contact with the air layer 34, as in this embodiment, it is preferable to align the arrangement patterns of the small protrusions 353 in the moth-eye structure portion 352 of the antireflection layer 35 that is arranged on the solar panel 32 side and the moth-eye structure portion 362 of the antireflection layer 36 that is arranged on the display member 33 side. By arranging them in this way, the uneven shape of the moth-eye structures 352 and 362 becomes uniform and continuous, and light reflection can be effectively suppressed.

[0030] Furthermore, in the case of the display device 3 and the watch 100 incorporating it, the user normally wears the display device 3 on their wrist and views the display on the liquid crystal display 331. In this case, it is preferable that the display device 3 is disposed within the watch case 1 so that the axis of the 12 o'clock-6 o'clock direction (i.e., the up-down direction shown in FIG. 1 etc.) of an analog watch is aligned with the arrangement of the small protrusions 353 in the moth-eye structures 352, 362 in the antireflection layers 35, 36. By arranging it like this, under normal use Effective This effectively reduces light reflection.

[0031] By providing the moth-eye structures 352, 362 on the surface of the solar panel 32 that comes into contact with the air layer 34 and on the surface of the display member 33 that comes into contact with the air layer 34, light reflection is suppressed, preventing reflection on the display member 33 and making the display in the display area VAr easier to see. In addition, the increased light transmittance makes the screen of the liquid crystal display 331 brighter, resulting in a clearer, easier-to-see display. Furthermore, the improved color contrast of the liquid crystal display 331 allows for a vivid display that is faithful to the original colors. Furthermore, when the liquid crystal display 331 displays a large amount of black, such as a display with a black background, the black appears even more clearly.

[0032] In this embodiment, the substrates 351 and 361 on which the moth-eye structures 352 and 362 are provided include a retardation film. In this embodiment, a high retardation film is used as the retardation film. Note that the retardation film included in the substrates 351 and 361 is not limited to a high retardation film. High retardation films have a slow axis and a fast axis that are generated during the manufacturing process. The in-plane slow axis of an optical film is the axis along which the refractive index is maximized on the film surface, and the degree of light refraction can be adjusted by adjusting the film's orientation.

[0033] Figures 7(a) and 7(b) are schematic diagrams showing examples of the arrangement of cutting dies when cutting the substrate constituting the antireflection layer in this embodiment from a roll-shaped sheet, where Figure 7(a) shows the case of the substrate of the antireflection layer arranged on the liquid crystal display side, and Figure 7(b) shows the case of the substrate of the antireflection layer arranged on the solar panel side. 7(a) and 7(b), the high retardation films used as the substrates 351 and 361 are cut out from a roll-shaped substrate sheet 37 using cutting dies 38 and 39. The substrate sheet 37 is usually produced by stretching in a stretching direction (machine direction, referred to as "MD direction" in FIGS. 7(a) and 7(b)) along the circumferential direction of the roll. The direction perpendicular to the MD direction is referred to as the TD direction (transverse direction) in FIGS. 7(a) and 7(b). In this embodiment, it is assumed that the slow axis appears in the TD direction. However, the directions in which the slow axis and fast axis appear on the film surface depend on the film manufacturing process, manufacturing technique, and materials used for the substrates 351 and 361, and the high retardation films used as the substrates 351 and 361 of the antireflection layers 35 and 36 are not limited to those in which the slow axis appears in the TD direction.

[0034] The arrangement of the display member 33 and anti-reflection layers 35, 36 and their relationship to the timepiece 100 will now be described with reference to FIG. FIG. 8 is an explanatory diagram showing a schematic arrangement of the display member, the anti-reflection layer, and the clock. 8, the display member 33 has a liquid crystal display 331 and an upper polarizing plate 332 and a lower polarizing plate 333 arranged to sandwich the liquid crystal display 331 from above and below (the front and back of the display device 3). Of these, the upper polarizing plate 332 is the polarizing plate on the viewing side (the light output side). The upper polarizing plate 332 and the lower polarizing plate 333 are arranged so that the transmission axis directions for transmitting light are offset by 90 degrees. Although detailed illustration is omitted, the liquid crystal display 331 has a structure in which a liquid crystal layer containing liquid crystal molecules Lm is sandwiched between two glass substrates with transparent electrodes. The glass substrates are provided with alignment films with fine grooves (alignment film 331a arranged on the upper polarizing plate 332 side and alignment film 331b arranged on the lower polarizing plate 333 side). In addition, a backlight (not shown) is arranged behind the lower polarizing plate 333 (below / back side of the display device 3).

[0035] The liquid crystal molecules Lm have the property of aligning themselves along the grooves of the alignment films 331a and 331b, and when the orientation of the grooves of the alignment films 331a and 331b is shifted by 90 degrees, the liquid crystal molecules Lm are twisted by 90 degrees between the alignment films 331a and 331b (as shown in FIG. 8). When light passes through the liquid crystal display 331 in this state, the vibration direction of the light is twisted by 90 degrees in accordance with the twist of the liquid crystal molecules Lm. On the other hand, when a voltage is applied between the transparent electrodes, the liquid crystal molecules Lm change their orientation to align with the direction of the electric field. As a result, the liquid crystal molecules Lm are in an untwisted state, and light passing through the liquid crystal display 331 in this state does not change its vibration direction. By sandwiching such a liquid crystal display 331 between an upper polarizing plate 332 and a lower polarizing plate 333, the liquid crystal display 331 can be switched ON / OFF (visible / invisible).

[0036] That is, the light emitted from the backlight ("backlight light" in FIG. 8) is a mixture of light vibrating in various directions such as the vertical direction and the horizontal direction. For example, as shown in the illustrated example, if the lower polarizer 333 is arranged so that its transmission axis direction is horizontal, only light vibrating in the horizontal direction out of the backlight is transmitted through the lower polarizer 333. The light that has transmitted through the lower polarizer 333 vibrates along the direction of the liquid crystal molecules Lm. For example, as shown in FIG. 8, if the grooves of the alignment film 331b on the lower polarizer 333 side are oriented horizontally and the grooves of the alignment film 331a on the upper polarizer 333 side are oriented vertically, the liquid crystal molecules Lm will be twisted from the horizontal direction to the vertical direction, and the light that has transmitted through the lower polarizer 333 and entered the liquid crystal display 331 will also change its vibration direction from the horizontal direction to the vertical direction. The upper polarizer 332, which is arranged on the output side, is arranged so that its transmission axis direction is shifted by 90 degrees from the transmission axis direction of the lower polarizer 333 and is vertical, so that light incident on the liquid crystal display 331 can pass through the upper polarizer 332. In contrast, when a voltage is applied between the transparent electrodes, the liquid crystal molecules Lm are not twisted, as described above, and the vibration direction of light does not change. If the transmission axis direction of the lower polarizer 333 is horizontal, the vibration direction of light remains horizontal. Therefore, light incident on the liquid crystal display 331 cannot pass through the upper polarizer 332.

[0037] When the display device 3 is applied to the watch 100 as in this embodiment, it is preferable to position the display device 3 so that it has the best visibility when the watch 100 is normally worn on the wrist. Specifically, it is preferable to align the direction in which the best visibility of the display device 3 is achieved with the axis of the 12 o'clock-6 o'clock direction on an analog watch. For this reason, as shown in Figure 8, the display device 3 is placed inside the watch case 1 so that the transmission axis of the upper polarizer 332, which is placed on the light output side, is in the vertical direction (along the 12 o'clock-6 o'clock axis) of the analog watch. In this state, the antireflection layers 35, 36 are preferably arranged so that the direction in the substrates 351, 361 including the high retardation film that maximizes light transmittance when viewed from the viewing side (referred to as "direction D" in Figure 8) is aligned with the 12 o'clock-6 o'clock axis of the analog timepiece. Although not shown in the figure, the light transmission axis in polarized sunglasses is also usually set in the vertical direction, so by aligning the transmission axis of the upper polarizer 332 of the display device 3 with the 12 o'clock-6 o'clock axis of an analog watch and arranging the anti-reflection layers 35, 36 so that the direction in the base materials 351, 361 that provides the maximum light transmittance when viewed from the viewing side (direction D in Figure 8) is aligned with the 12 o'clock-6 o'clock axis, it is possible to ensure good visibility when a user looks at the display device 3 (display area VAr of the display device 3) while wearing the polarized sunglasses.

[0038] Furthermore, if the moth-eye structures 352, 362 are provided to prevent reflection, viewing the display area VAr through polarized sunglasses can cause the display to go completely dark (a phenomenon known as blackout). For example, not only when the watch 100 is a sports watch that is often viewed through polarized sunglasses, but also in other cases, it is fully expected that users will view the display area VAr through polarized sunglasses. For this reason, maintaining high visibility even through polarized sunglasses is required. In this regard, using a high-retardation film as the base material 351, 361 on which the moth-eye structures 352, 362 are provided can refract and diffuse light, thereby diffusing light in the transmission axis direction of the upper polarizer 332, which is located on the light output side, and thus preventing the display from going completely dark.

[0039] However, as mentioned above, high-retardation films have a slow axis and a fast axis that are generated during the manufacturing process, and the degree of light refraction changes depending on how they are arranged. Therefore, when the antireflection layers 35, 36 have base materials 351, 361 that include high-retardation films, it is preferable to arrange the antireflection layers 35, 36 so that the direction in the base materials 351, 361 that maximizes light transmittance when viewed from the viewing side (direction D in Figure 8) is aligned with the axis from 12 o'clock to 6 o'clock on an analog watch. For example, the antireflection layers 35, 36 of this embodiment include a linear polarizing film, and are arranged so that the transmission axis of the linear polarizing film is aligned with the axis of the 12 o'clock-6 o'clock direction of an analog timepiece. The direction of the transmission axis of the linear polarizing film is direction D, which maximizes the light transmittance when viewed from the viewing side of the high retardation film. As a result, as shown in FIG. 8 , the transmission axis of the upper polarizing plate 332 on the viewing side of the display device 3 and the transmission axis of the linear polarizing film of the antireflection layers 35, 36 both coincide with the axis of the 12 o'clock-6 o'clock direction of an analog timepiece. By arranging the anti-reflection layers 35 and 36 in such a direction, the display device 3 can have good visibility even when viewed through polarized sunglasses.

[0040] Furthermore, for example, when a plurality of antireflection layers 35, 36 are provided, it is preferable to align the slow axes of the high retardation films included in the base materials 351, 361 of each antireflection layer 35, 36, and to align the direction D in which the light transmittance of the entire plurality of films is maximized when viewed from the viewing side with the axis of the 12 o'clock-6 o'clock direction of an analog watch. Specifically, the antireflection layers 35, 36 are arranged so that the transmission axes of the linear polarizing films included in each antireflection layer are all aligned with the axis of the 12 o'clock-6 o'clock direction of an analog watch. That is, as in this embodiment, when antireflection layers 35 and 36 are provided on the surface of the solar panel 32 that contacts the air layer 34 and the surface of the display member 33 that contacts the air layer 34, respectively, the slow axes of the substrate 351 of the antireflection layer 35 that is arranged on the solar panel 32 side and the substrate 361 of the antireflection layer 36 that is arranged on the display member 33 side are aligned. That is, the 12H of the substrate 351 of the antireflection layer 35 arranged on the solar panel 32 side faces the 12H of the substrate 361 of the antireflection layer 36 arranged on the display member 33 side, the 6H of the substrate 351 of the antireflection layer 35 arranged on the solar panel 32 side faces the 6H of the substrate 361 of the antireflection layer 36 arranged on the display member 33 side, the 3H of the substrate 351 of the antireflection layer 35 arranged on the solar panel 32 side faces the 3H of the substrate 361 of the antireflection layer 36 arranged on the display member 33 side, and the 9H of the substrate 351 of the antireflection layer 35 arranged on the solar panel 32 side faces the 9H of the substrate 361 of the antireflection layer 36 arranged on the display member 33 side. By aligning the orientations of the substrates 351 and 361 in this manner, the visibility of the display device 3 can be effectively improved.

[0041] Furthermore, in the case of the display device 3 and the watch 100 incorporating it, as described above, the user normally views the display while wearing it on their wrist. In this case, it is preferable that the display device 3 be disposed within the watch case 1 so that the axis of the 12 o'clock-6 o'clock direction (the up-down direction shown in FIG. 1 etc.) in an analog watch is aligned with direction D, in which the light transmittance of the high retardation film used in the base materials 351, 361 in the antireflection layers 35, 36 is maximized when viewed from the viewing side. By arranging them in this way, visibility can be improved most effectively under normal use conditions.

[0042] In Fig. 7(b), the 9 o'clock position and the 3 o'clock position in the 9 o'clock-3 o'clock direction of the analog timepiece are reversed from those shown in Fig. 7(a). This is because the antireflection layer 35 arranged on the solar panel 32 side is attached to the solar panel 32 in a state where it is reversed and faces the antireflection layer 36 arranged on the display member 33 side, so the 9 o'clock position and the 3 o'clock position are reversed.

[0043] Next, the operation of the display device of this embodiment and the timepiece incorporating the same will be described. When assembling the display device 3 in this embodiment, a light-transmitting solar panel 32 is placed via an adhesive layer 312 on the back side of a windshield member 31 having a decorative portion 311 on the outer periphery or the like. The alignment of the windshield member 31 and the solar panel 32 is carried out by, for example, attaching marks or the like to each of the windshield member 31 and the solar panel 32 and aligning them.

[0044] An anti-reflection layer 35 is disposed on the back side of the solar panel 32. The antireflection layer 35 is formed by forming a roll of a substrate sheet 37, which is a high-retardation film having a moth-eye structure 352 formed on its surface in advance, and cutting the roll of the substrate sheet 37 into a desired shape and size using a cutting die 38 so that the direction D in which the light transmittance is maximized when viewed from the viewing side of the high-retardation film (for example, the direction of the transmission axis of a linear polarizing film included in the high-retardation film or the direction of the axis in the MD direction) coincides with the axis in the 12 o'clock to 6 o'clock direction of an analog clock. When forming the moth-eye structure 352 on the substrate 351, it is preferable to align the arrangement pattern of the small protrusions 353 in the moth-eye structure 352 with the direction D in which the light transmittance is maximized when viewed from the viewing side of the high retardation film. The anti-reflection layer 35 is attached with an adhesive layer or the like (not shown) so that the base material 351 side faces the back surface of the solar panel 32 . At this time, the display device 3, and in turn the watch 100 incorporating it, is oriented so that the axis of the 12 o'clock-6 o'clock direction of an analog watch coincides with the direction D in which the light transmittance is maximized when viewed from the viewing side of the high retardation film, which is the substrate 351 constituting the antireflection layer 35, and the antireflection layer 35 is attached. When the antireflection layer 35 is attached to the solar panel 32, air bubbles are likely to form at the edges of the irregularities on the surface of the power generating section 322 of the solar panel 32. For this reason, it is preferable to provide a slightly thicker adhesive layer to prevent the formation of air bubbles.

[0045] In addition, an anti-reflection layer 36 is disposed on the surface (upper surface) of the upper polarizing plate 332 of the display member 33. The antireflection layer 36 is also formed by forming a roll of a substrate sheet 37, which is a high-retardation film having a moth-eye structure 362 formed on its surface, and cutting the substrate sheet 37 into a desired shape and size using a cutting die 39 set on the roll so that the direction D in which light transmittance is maximized when viewed from the viewing side of the high-retardation film (for example, the direction of the transmission axis of a linear polarizing film contained in the high-retardation film or the direction of the MD axis) coincides with the 12 o'clock to 6 o'clock axis of an analog watch. As shown in Figure 7(b), the 9 o'clock and 3 o'clock positions are opposite the antireflection layer 35 arranged on the solar panel 32 side. When forming the moth-eye structure 362 on the substrate 361, it is also preferable to align the arrangement pattern of the small protrusions 353 in the moth-eye structure 362 with the direction D in which the light transmittance is maximized when viewed from the viewing side of the high retardation film.

[0046] The antireflection layer 36 is attached with an adhesive layer or the like (not shown) so that the base material 361 side faces the front surface of the upper polarizing plate 332 . At this time, the display device 3, and in turn the watch 100 incorporating it, is oriented so that the 12 o'clock-6 o'clock axis of the analog watch coincides with the direction D (for example, the direction of the transmission axis of the linear polarizing film included in the high retardation film) in which the light transmittance is maximized when viewed from the viewing side of the high retardation film, which is the base material 361 constituting the antireflection layer 36, and the antireflection layer 36 is attached. When the antireflection layer 36 is attached to the surface of the upper polarizing plate 332 of the display member 33, the adhesive layer can be made thinner than when the antireflection layer 35 is attached to the solar panel 32 side, since the attachment surface is smooth. Alternatively, the upper polarizing plate 332 and the antireflection layer 36 may be joined together and cut (i.e., cut out with a cutting die 39) in a state where the antireflection layer 36 is previously attached to the surface of the upper polarizing plate 332. This manufacturing method is preferable because it eliminates the need to take into account tolerance deviations during bonding.

[0047] Furthermore, the display member 33 is placed below the solar panel 32 so that the anti-reflection layer 35 and the anti-reflection layer 36 face each other. At this time, a gap that forms an air layer 34 is provided between the solar panel 32 and the display member 33. When the display member 33 is placed below the solar panel 32, the display member 33 is positioned so that the direction D at which the light transmittance is maximum when viewed from the viewing side of the high retardation film, which is the base material 351 of the antireflection layer 35 on the solar panel 32 side (for example, the direction of the transmission axis of the linear polarizing film contained in the high retardation film), coincides with the direction D at which the light transmittance is maximum when viewed from the viewing side of the high retardation film, which is the base material 361 of the antireflection layer 36 on the display member 33 side (for example, the direction of the transmission axis of the linear polarizing film contained in the high retardation film).

[0048] This completes the assembly of the display device 3. The assembled display device 3 is then housed inside the watch case 1. At this time, the 12 o'clock-6 o'clock axis of the analog watch of the watch 100 is aligned with the 12 o'clock-6 o'clock axis of the display of the display device 3 (the vertical axis of the display part of the watch) and the watch is set in the watch case 1. As a result, the direction D in which the light transmittance is maximized when viewed from the viewing side of the high retardation films that are the base materials 351, 361 of the antireflection layers 35 and 36 arranged in the display device 3 (for example, the direction of the transmission axis of the linear polarizing film included in the high retardation film) coincides with the 12 o'clock-6 o'clock axis of the analog watch of the watch 100. This completes the assembly of the watch 100.

[0049] In this way, by providing the anti-reflection layers 35 and 36 within the display device 3, it is possible to suppress light reflection even when there is an air layer 34 between the solar panel 32 and the display member 33, thereby improving the visibility of the display device 3 and the watch 100 incorporating it. Furthermore, by aligning the direction D (for example, the direction of the transmission axis of the linear polarizing film contained in the high retardation film), which is the base material 351, 361 of the anti-reflection layers 35, 36 arranged in the display device 3, in which the light transmittance is maximum when viewed from the viewing side, with the 12 o'clock-6 o'clock axis of the analog watch of the watch 100, the display device 3 and the watch 100 can be made to have the best visibility when the watch 100 is normally worn on the wrist.

[0050] As described above, according to this embodiment, a windshield member 31 made of a light-transmitting material, a solar panel 32 arranged in contact with the lower part of the windshield member 31, a display member 33 arranged below the solar panel 32 and having a display area VAr that is visible from the outside, an air layer 34 arranged between the solar panel 32 and the display member 33, and anti-reflection layers 35, 36 provided on the surface of the solar panel 32 that contacts the air layer 34 and the surface of the display member 33 that contacts the air layer 34 are stacked in a viewing direction Vd in which the display member 33 is viewed through the windshield member 31 and the solar panel 32, and the area of ​​the windshield member 31 that overlaps the display area VAr of the display member 33 functions as a window for waterproof testing. This makes it possible to check whether or not fogging due to condensation occurs in the central portion of the display device 3 in the surface direction corresponding to the display area VAr. Because condensation is likely to occur in the central portion of the display device 3, a highly reliable waterproof test can be performed. Even when the air layer 34 is provided in an area overlapping the display area VAr of the display member 33 in order to perform a waterproof test at such a position, light reflection can be suppressed by providing anti-reflection layers 35, 36 on the surface of the solar panel 32 that comes into contact with the air layer 34 and the surface of the display member 33 that comes into contact with the air layer 34, which are surfaces that tend to reflect light due to differences in the refractive index of light. This makes it possible to reduce reflections on the liquid crystal display 331 and ensure good visibility in the display area VAr of the liquid crystal display 331. In addition, the increased light transmittance makes the screen of the liquid crystal display 331 brighter, enabling a clearer, easier-to-see display. Furthermore, the improved color contrast of the liquid crystal display 331 allows for vivid display that is faithful to the original colors when color display is possible, and when a display with many black portions is performed on the liquid crystal display 331, such as a display against a black background, the black appears even more clearly, improving the appearance of the display device 3.

[0051] In this embodiment, anti-reflection layers 35 and 36 are arranged on the surface where the solar panel 32, which is a plate-shaped light-transmitting member, comes into contact with the air layer 34 and on the surface where the display member 33 comes into contact with the air layer 34, respectively. By providing anti-reflection layers 35, 36 on all surfaces in contact with the air layer 34 in this way, light reflection can be effectively suppressed even when the air layer 34 is provided, thereby realizing a display device 3 with better visibility.

[0052] In this embodiment, the outer peripheral power generation area PAr of the solar panel 32, which transmits almost no light, is provided as a visibility restricting section that restricts areas other than the display area VAr of the display member 33 from being visible from the outside. This allows various wirings and alignment portions arranged in areas other than the display area VAr to be masked, thereby making it possible to give the display device 3 a good appearance. When masking the area other than the display area VAr in this way, it is not possible to provide a window for waterproof testing that avoids the display area VAr. Even in this case, the configuration of this embodiment makes it possible to check whether fogging due to condensation occurs in the area of ​​the windshield member 31 that overlaps the display area VAr, thereby enabling highly reliable waterproof testing.

[0053] In this embodiment, the visibility restricting portion is a shielding portion that is disposed on the viewing side of the display member 33 in the stacking direction (viewing direction Vd), and specifically, is the outer periphery power generating area PAr of the solar panel 32. Therefore, the external appearance of the display device 3 can be effectively finished to look good without providing a separate member as a visibility restricting portion.

[0054] In this embodiment, the plate-shaped light-transmitting member is a solar panel 32. By providing such a solar panel 31 that transmits light, it is possible to secure power generation by photovoltaic power generation while ensuring the visibility of the display on the display member 33 .

[0055] When the plate-shaped light-transmitting member is a solar panel 32 as in this embodiment, by configuring a power generation area (peripheral power generation area PAr) in a part of the solar panel 32 other than the area that overlaps with the display area VAr of the display member 33, power generation can be generated using light incident from the viewing direction without impeding the visibility of the display area VAr.

[0056] Furthermore, when the plate-shaped light-transmitting member is the solar panel 32 as in this embodiment, if a power generation region (light-transmitting power generation region SAr) is formed in at least the region of the solar panel 32 that overlaps the display region VAr of the display member 33, light incident from the viewing direction is received by the region corresponding to the display region VAr, enabling efficient power generation. Note that in this embodiment, the peripheral power generation region PAr is also provided in a portion other than the region that overlaps the display region VAr, allowing for more effective power generation and the acquisition of more electricity.

[0057] In this embodiment, the antireflection layers 35 and 36 have moth-eye structures 352 and 362 in which a plurality of small protrusions 353 are arranged in a forest. This effectively reduces reflection of light incident on the display area VAr of the display member 33. This increases light transmittance and brightens the screen of the liquid crystal display 331, resulting in a clear and easy-to-view display area VAr. Furthermore, the color contrast of the liquid crystal display 331 is improved, enabling vivid display that is faithful to the original colors. Furthermore, when the liquid crystal display 331 displays a large amount of black, such as a display with a black background, the display area VAr can be made to look even more vivid and black, resulting in an excellent appearance.

[0058] In this embodiment, when a plurality of antireflection layers 35, 36 are provided, the arrangement patterns of the small protrusions 353 in the moth-eye structures 352, 362 of the antireflection layers 35, 36 are aligned. By arranging them in this way, the uneven shape of the moth-eye structures 352 and 362 becomes uniform and continuous, and light reflection can be effectively suppressed.

[0059] In this embodiment, a high retardation film is used as the base materials 351 and 361 on which the moth-eye structures 352 and 362 are provided. When the moth-eye structures 352, 362 are provided for anti-reflection purposes, for example, when viewing the display area VAr while wearing polarized sunglasses, the display may appear pitch black depending on the viewing angle. In this regard, when a high-retardation film is used as the base material 351, 361 on which the moth-eye structures 352, 362 are provided, refraction and diffusion of light occurs, thereby diffusing light in the direction of the transmission axis of the upper polarizing plate 332 arranged on the light output side, thereby preventing the display area VAr from appearing pitch black.

[0060] Furthermore, in this embodiment, when a plurality of antireflection layers 35, 36 are provided, the high retardation films serving as the base materials 351, 361 of the antireflection layers 35, 36 are arranged so that the slow axes thereof are aligned. High-retardation films have a slow axis and a fast axis that are generated during the manufacturing process, and have the property that their appearance changes depending on the orientation of the film. In this regard, by aligning the orientation of the slow axis of the high-retardation film serving as the base material 351, 361 in each of the antireflection layers 35, 36, it is possible to align the appearance characteristics of the multiple antireflection layers 35, 36, and it becomes easier to arrange the multiple antireflection layers 35, 36 in an effective orientation. That is, by aligning the orientation of each high retardation film included in the plurality of antireflection layers 35, 36, the orientation D in which the light transmittance is maximized when viewed from the viewing side in the substrates 351, 361 including the high retardation films is aligned, and by aligning this with the transmission axis direction of the upper polarizing plate 332 arranged on the light output side of the display member 33, a display device 3 with excellent visibility can be realized.

[0061] When the display device 3 configured as described above is incorporated into the watch case 1 and applied to the watch 100, it is possible to check whether or not condensation causes fogging in the center of the display area VAr of the watch 100, enabling a highly reliable waterproof test to be performed. Furthermore, even when an air layer 34 is provided for waterproof testing, the anti-reflection layers 35, 36 can suppress light reflection that occurs at the boundary with the air layer 34. This reduces reflections on the liquid crystal display 331, making it possible to provide a watch in which the display area VAr of the liquid crystal display 331 is easy to see. Furthermore, the increased light transmittance makes the screen of the LCD display 331 brighter, making the display on the watch 100 easier to see. Furthermore, if the LCD display 331 is capable of color display, the improved contrast results in a watch that can display vivid colors that are faithful to the original colors. Furthermore, when the LCD display 331 displays a large amount of black, such as a black background, the black appears even more clearly, improving the appearance of the watch 100.

[0062] Furthermore, in this embodiment, when the anti-reflection layers 35, 36 of the display device 3 have moth-eye structures 352, 362, the display device 3 is arranged within the watch case 1 of the watch 100 so that, when the display device 3 is housed in the watch case 1, the axis in the 12 o'clock-6 o'clock direction of the analog watch and the arrangement of the small protrusions 353 in the moth-eye structures 352, 362 are aligned. As a result, when the display area VAr is viewed in the normal orientation when the timepiece 100 is worn on the wrist, light reflection can be effectively suppressed, and high visibility can be maintained.

[0063] Furthermore, in this embodiment, when the antireflection layers 35, 36 of the display device 3 have substrates 351, 361 including a high retardation film, the display device 3 is arranged within the watch case 1 of the watch 100 so that, when the display device 3 is housed in the watch case 1 of the watch 100, the axis in the 12 o'clock-6 o'clock direction in the analog watch is aligned with the direction D in which the light transmittance is maximized when viewed from the viewing side of the high retardation film in the antireflection layers 35, 36 (for example, the direction of the transmission axis of the linear polarizing film included in the high retardation film). As described above, when the display device 3 is arranged in the watch case 1 so that the arrangement of the small protrusions 353 in the moth-eye structure portions 352, 362 is also aligned with the axis of the 12 o'clock-6 o'clock direction in an analog watch, the arrangement of the small protrusions 353, the direction D in which the light transmittance is maximum when viewed from the viewing side of the high retardation film, and the axis of the 12 o'clock-6 o'clock direction in an analog watch are all aligned, and higher visibility can be expected. High-retardation films have the property that their appearance changes depending on the orientation in which they are placed. In the case of a watch 100 incorporating a display device 3, the user will typically view the display on the liquid crystal display 331 while wearing the watch on their wrist. For this reason, by aligning the direction D in which light transmittance is maximized when viewed from the viewing side of the high-retardation film in the anti-reflection layers 35, 36 with the 12 o'clock-6 o'clock axis in an analog watch, a watch can be created that provides the clearest display when the display area VAr is viewed in the normal orientation when the watch 100 is worn on the wrist. Furthermore, since the high retardation film darkens the display when viewed from any direction other than direction D, where the light transmittance is at its maximum when viewed from the viewing side, it is expected to have the effect of protecting privacy by making the displayed content difficult to see when someone tries to look into the display area VAr.

[0064] Although the embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to such an embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0065] For example, the position where the air layer is provided is not limited to the example shown in the above embodiment. FIG. 9 is a schematic cross-sectional view showing an example of a display device in which the position where the air layer is provided is different. 9 illustrates a case in which an air layer 54 is disposed between a windshield member 31, which is a protective member made of a light-transmitting material, and a solar panel 32, which is a plate-shaped light-transmitting member. Note that the same parts as those in the above embodiment are given the same reference numerals, and descriptions thereof will be omitted.

[0066] When an air layer 54 is provided between the windshield member 31 and the solar panel 32 in this manner, the solar panel 32 is placed below the windshield member 31 with a gap therebelow, and a display member 33 having a display area VAr that is visible from the outside is provided below the solar panel 32 without an air layer in between, i.e., without a gap. Anti-reflection layers 55, 56 are provided on the surface of the windshield member 31 that comes into contact with the air layer 54 and on the surface of the solar panel 32 that comes into contact with the air layer 54, respectively. In this case as well, the area of ​​the windshield member 31 that overlaps the display area VAr of the display member 33 functions as a window for waterproofing inspection.

[0067] This makes it possible to check whether or not fogging due to condensation occurs in the central portion of the display device 3 in the surface direction corresponding to the display area VAr. Because condensation is likely to occur in the central portion of the display device 3, a highly reliable waterproof test can be performed. Furthermore, even when an air layer 34 is provided in an area overlapping the display area VAr of the display member 33 in order to perform a waterproof test at such a position, light reflection can be effectively suppressed by providing anti-reflection layers 55, 56 on the surface of the windshield member 31 that comes into contact with the air layer 54 and the surface of the solar panel 32 that comes into contact with the air layer 54, which are surfaces that are prone to reflecting light due to differences in the refractive index of light. Therefore, it is possible to reduce reflections on the liquid crystal display 331 and ensure good visibility in the display region VAr of the liquid crystal display 331. In addition, the increased light transmittance makes the screen of the liquid crystal display 331 brighter, enabling a clearer, easier-to-see display. Furthermore, because the color contrast of the liquid crystal display 331 is improved, when color display is possible, a vivid display that is faithful to the original colors can be produced. Also, when a display with a large amount of black is produced on the liquid crystal display 331, such as a display against a black background, the black appears even more clearly, improving the appearance of the display device 3 and the watch 100 when it is incorporated into the display device 3. Furthermore, in this case, an anti-reflection layer 56 can be provided on the surface of the solar panel 32 that comes into contact with the air layer 54, thereby suppressing the reflection of light that occurs between the solar panel 32 and the air layer 54, which is expected to improve light transmittance and the power generation efficiency of the solar panel 32.

[0068] 10(a) and 10(b), when a first antireflection layer (e.g., antireflection layer 36 in FIG. 2) and a second antireflection layer (e.g., antireflection layer 35 in FIG. 2) are provided on both sides of the air layer 34 as antireflection layers, the antireflection layers (e.g., antireflection layers 35, 36 in FIG. 2) may be arranged such that the orientation of the high retardation film used as the substrate 661 in the first antireflection layer (e.g., antireflection layer 36 in FIG. 2) is shifted by 45 degrees from the orientation of the high retardation film used as the substrate 651 in the second antireflection layer (e.g., antireflection layer 35 in FIG. 2). When the orientations are shifted by 45 degrees, the high retardation film used as the substrate 661 in the first antireflection layer and the high retardation film used as the substrate 661 in the second antireflection layer are shifted in the same direction. In this case, the orientation of the high retardation film may be shifted so that the orientation D in which the light transmittance is maximized when viewed from the viewing side in the high retardation film used as substrate 661 in the first light antireflection layer (e.g., antireflection layer 36 in FIG. 2) is 45 degrees from the orientation D in which the light transmittance is maximized when viewed from the viewing side in the high retardation film used as substrate 651 in the second light antireflection layer (e.g., antireflection layer 35 in FIG. 2). When a first antireflection layer and a second antireflection layer are provided, one of them may be arranged so that the direction D at which the light transmittance is maximized when viewed from the viewing side of the high retardation film included in the antireflection layer is aligned with the 12 o'clock-6 o'clock direction of an analog clock, and the other may be arranged so that the direction D at which the light transmittance is maximized when viewed from the viewing side of the high retardation film included in the antireflection layer is shifted by 45 degrees with respect to the direction D in one antireflection layer.

[0069] When the axes are shifted in this manner, the linearly polarized light output from the upper polarizer 332 (linearly polarized light in the vertical and vertical directions in the illustrated example shown in FIG. 8) is converted into a state close to natural light (close to circularly polarized light). As a result, when the display area VAr of the display device 3 is viewed, for example, from the horizontal direction (from 3 o'clock to 9 o'clock on an analog clock) through polarized sunglasses with a vertical transmission axis, although there is a loss of light that passes through the transmission axis of the polarized sunglasses, some light can pass through the transmission axis, so it is possible to avoid a state in which nothing becomes visible.

[0070] When a plurality of antireflection layers are provided, various configurations can be adopted. For example, the first antireflection layer (antireflection layer 36) provided on the surface of the solar panel 32, which is a plate-shaped light-transmitting member, that comes into contact with the air layer 34 may include at least a linear polarizing film, and the second antireflection layer (for example, the antireflection layer 35 in FIG. 2) provided on the surface of the display member 33 that comes into contact with the air layer 34 may include at least a λ / 4 retardation film. In this case, the orientation of the high retardation film may be shifted so that the in-plane slow axis of the λ / 4 retardation film in the antireflection layer 35 is at an angle of 45 degrees to the transmission axis of the linear polarizing film in the antireflection layer 36. In this case, the antireflection layer including the linear polarizing film (the first antireflection layer in this embodiment) is oriented so that the transmission axis direction of the linear polarizing film coincides with the 12 o'clock-6 o'clock direction on an analog clock, and the other antireflection layer (the second antireflection layer in this embodiment) is oriented with the high retardation film shifted so that the in-plane slow axis of the λ / 4 retardation film included in the second antireflection layer is oriented at 45 degrees to the transmission axis of the linear polarizing film in the first antireflection layer.

[0071] In this case as well, the linearly polarized light output from the upper polarizer 332 (linearly polarized light in the longitudinal and vertical directions in the illustrated example shown in FIG. 8) is converted into a state close to natural light (a state close to circularly polarized light). That is, in the above example, when the orientation D of the high retardation film, which is the substrate 661 (the orientation of the transmission axis of the linear polarizing film included in the high retardation film) and the orientation D of the high retardation film, which is the substrate 651 (the orientation of the in-plane slow axis of the λ / 4 retardation film included in the high retardation film), are tilted by approximately 45 degrees, the linearly polarized light is split into two polarized components that are orthogonal to each other and have equal amplitudes. One of these polarized components experiences a phase delay, resulting in a random phase shift, and the linearly polarized light is converted into circularly polarized light or approximately circularly polarized light. Note that when tilted by 45 degrees, the linearly polarized light becomes circularly polarized light, and before and after that, it becomes elliptically polarized light, etc. However, as long as it is within an acceptable range for appearance, it is not limited to being circularly polarized light, and it may also be elliptically polarized light, approximately circularly polarized light, etc. (the angle shift of the orientation D).

[0072] By converting linearly polarized light into a state close to natural light (a state close to circularly polarized light) in this way, when the display area VAr of the display device 3 is viewed, for example, horizontally (from 3 o'clock to 9 o'clock on an analog clock) through polarized sunglasses with a vertical transmission axis, although there is a loss of light that passes through the transmission axis of the polarized sunglasses, some light can pass through the transmission axis, so it is possible to avoid a situation where nothing becomes visible. In other words, although the same sharpness as that achieved when both sides of the air layer 34 are aligned in the direction D where the light transmittance is maximum when viewed from the viewing side of the high retardation film that is the substrate 661 of the first light antireflection layer and the direction D where the light transmittance is maximum when viewed from the viewing side of the high retardation film that is the substrate 661 of the second light antireflection layer cannot be expected, the display area VAr does not become dark when viewed from any angle, and visibility can be ensured. When such a display device is incorporated into the watch 100, the watch can ensure a certain level of visibility regardless of the direction in which the watch 100 is worn.

[0073] Furthermore, the plate-shaped light-transmitting member is not limited to the solar panel 32. For example, the display device may be a display device configured with multiple display members superimposed on one another, in which case the second display member (any of the multiple display members) may function as a plate-shaped light-transmitting member. In this case as well, by providing an anti-reflection layer on the surface of the second display member that comes into contact with the air layer 34, it is possible to suppress light reflection and ensure visibility of the display device.

[0074] Furthermore, the visibility restricting portion is not limited to a shielding portion such as the outer peripheral power generating area PAr of the solar panel 32. For example, it may be a cover member such as a bezel member that is arranged on the exterior of the display device 3 or the watch case 1. In this case as well, by masking various wirings and alignment portions arranged in areas other than the display area VAr, the external appearance of the display device 3 can be finished to look good. When masking areas other than the display area VAr in this manner, it is not possible to provide a window for waterproof testing that avoids the display area VAr. However, by adopting the configuration shown in the above embodiment, it is possible to check whether fogging due to condensation occurs in the area of ​​the windshield member 31 that is superimposed on the display area VAr, thereby enabling a highly reliable waterproof testing to be performed.

[0075] Furthermore, in the above embodiment, the case where the light antireflection layers 35 and 36 are provided on both surfaces in contact with the air layer 34 has been exemplified, but only one of the light antireflection layers may be provided. In this case, the light reflection can be suppressed to some extent to ensure visibility. In addition, the number of parts can be reduced, and the labor required for assembling can be reduced by eliminating the need to align the anti-reflection layers 35, 36 with each other (aligning in direction D where light transmittance is at its maximum when viewed from the viewing side), thereby reducing the cost of the display device 3 and, ultimately, the watch 100 into which it is incorporated.

[0076] In addition, in this embodiment, a case where a high retardation film is used as the substrate 351, 361 on which the moth-eye structure 352, 362 is provided is exemplified, but the substrate 351, 361 is not limited to a high retardation film (retardation film) and may be a simple transparent resin film or the like. When the moth-eye structures 352, 362 are provided, when viewed visually without polarized sunglasses or the like, the effect of preventing light reflection occurring at the boundary with the air layer 34 is sufficiently recognized without using a high retardation film (retardation film), and visibility can be improved. In this case as well, when a plurality of antireflection layers are provided, it is preferable to arrange the small protrusions 353 in the moth-eye structures 352, 362 of the antireflection layers 35, 36 in the same pattern. Furthermore, when the display device 3 is housed in the watch case 1 of the watch 100, it is preferable to position the display device 3 within the watch case 1 so that the 12 o'clock-6 o'clock axis of the analog watch is aligned with the arrangement of the small protrusions 353 in the moth-eye structure portions 352, 362. This effectively reduces light reflection when viewing the display area VAr in the normal orientation when the timepiece 100 is worn on the wrist, and maintains high visibility.

[0077] 7(a) and 7(b) illustrate the case where the antireflection layers 35, 36 have a polygonal shape (octagonal in the illustrated example), but the shape of the antireflection layers 35, 36 is not limited to this. For example, the antireflection layers 35, 36 may have a polygonal shape with more corners, a quadrilateral shape, or the like. A polygonal shape makes it easier to position the antireflection layers 35 and 36 when providing them, but if positioning marks or the like are provided, the antireflection layers 35 and 36 may be disk-shaped or the like.

[0078] Furthermore, in this embodiment, the case where the display device 3 is incorporated into the timepiece 100 has been exemplified, but the device into which the display device 3 is incorporated is not limited to the timepiece 100. Any device can be used as the display device 3 that displays various types of information, such as a pedometer, a biometric information display device such as a heart rate monitor or pulse monitor, or an electronic device that displays various types of information such as travel distance, travel pace information, altitude information, and atmospheric pressure information.

[0079] Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and its equivalents. The inventions described in the claims originally attached to this application are as follows. The claim numbers described in the appendix are the same as those of the claims originally attached to this application. [Note] <Claim 1> a protective member formed of a light-transmitting material; a plate-shaped light-transmitting member disposed below the protective member without an air layer between the protective member and the light-transmitting member; a display member provided below the plate-shaped light-transmitting member and having a display area visible from the outside; an air layer disposed between the plate-shaped light-transmitting member and the display member; an anti-reflection layer provided on at least one of a surface of the plate-shaped light-transmitting member that contacts the air layer and a surface of the display member that contacts the air layer; are laminated in a viewing direction in which the display member is viewed through the protection member and the plate-shaped light-transmitting member, The area of ​​the protective member that overlaps the display area of ​​the display member functions as a window for waterproof inspection. A display device characterized by: <Claim 2> a protective member formed of a light-transmitting material; a plate-shaped light-transmitting member disposed below the protective member; a display member provided below the plate-shaped light-transmitting member without an air layer between the display member and the light-transmitting member, the display member having a display area visible from the outside; an air layer disposed between the protective member and the plate-shaped light-transmitting member; an anti-reflection layer provided on at least one of a surface of the protective member that contacts the air layer and a surface of the plate-shaped light-transmitting member that contacts the air layer; are laminated in a viewing direction in which the display member is viewed through the protection member and the plate-shaped light-transmitting member, The area of ​​the protective member that overlaps the display area of ​​the display member functions as a window for waterproof inspection. A display device characterized by: <Claim 3> 2. The display device according to claim 1, wherein the anti-reflection layer is disposed on each of a surface of the plate-shaped light-transmitting member that contacts the air layer and a surface of the display member that contacts the air layer. <Claim 4> 3. The display device according to claim 2, wherein the anti-reflection layer is disposed on each of a surface of the protection member that contacts the air layer and a surface of the plate-shaped light-transmitting member that contacts the air layer. <Claim 5> 5. The display device according to claim 1, further comprising a visibility restricting portion that restricts an area of ​​the display member other than the display area from being viewed from the outside. <Claim 6> 6. The display device according to claim 5, wherein the visibility restricting portion is a cover member disposed on the exterior or a shielding portion disposed on the viewing side of the display member in the stacking direction. <Claim 7> 7. The display device according to claim 1, wherein the plate-shaped light-transmitting member is a solar panel or a second display member. <Claim 8> 7. The display device according to claim 1, wherein the plate-shaped light-transmitting member is a solar panel, and a power generation area is configured in a portion of the solar panel other than the area that overlaps the display area of ​​the display member. <Claim 9> 7. The display device according to claim 1, wherein the plate-shaped light-transmitting member is a light-transmitting solar panel, and a power generation area is configured in at least an area of ​​the solar panel that overlaps the display area of ​​the display member. <Claim 10> 10. The display device according to claim 1, wherein the antireflection layer has a moth-eye structure in which a plurality of small protrusions are arranged in a forest. <Claim 11> 11. The display device according to claim 10, wherein when a plurality of the antireflection layers are provided, the arrangement patterns of the small protrusions in the moth-eye structure of each of the antireflection layers are aligned. <Claim 12> 12. The display device according to claim 1, wherein the antireflection layer includes a retardation film. <Claim 13> 13. The display device according to claim 12, wherein when a plurality of the antireflection layers are provided, the retardation films in the antireflection layers are arranged so that the slow axes of the retardation films are aligned. <Claim 14> The antireflection layer includes a first antireflection layer and a second antireflection layer, the first light antireflection layer includes at least a linear polarizing film, 13. The display device according to claim 12, wherein the second antireflection layer includes at least a λ / 4 retardation film, and the λ / 4 retardation film is arranged so that an in-plane slow axis of the λ / 4 retardation film is oriented at an angle of 45 degrees with respect to a transmission axis of the linear polarizing film. <Claim 15> A display device according to any one of claims 1 to 14; a case member that houses the display device; A watch characterized by comprising: <Claim 16> The timepiece according to claim 15, characterized in that, when the anti-reflection layer of the display device has a moth-eye structure, the display device is arranged within the case member so that, when the display device is housed in the case member, an axis in the 12 o'clock-6 o'clock direction of the analog timepiece and an arrangement of small protrusions in the moth-eye structure are aligned. <Claim 17> The display device is housed in the case member so that a transmission axis for transmitting output light coincides with an axis in the 12 o'clock-6 o'clock direction of an analog timepiece, the antireflection layer of the display device has a substrate including a retardation film, 17. The timepiece according to claim 15 or 16, wherein the antireflection layer is arranged so that the direction in which light transmittance is maximized when viewed from the viewing side of the substrate including the retardation film is aligned with an axis in the 12 o'clock-6 o'clock direction of the analog timepiece. <Claim 18> the display device is housed in the case member such that the transmission axis of a polarizing plate on the viewing side that transmits output light coincides with the axis of the 12 o'clock-6 o'clock direction of an analog timepiece; A watch as described in any one of claims 15 to 17, characterized in that the anti-reflection layer includes at least a linear polarizing film, and the transmission axis of the linear polarizing film is arranged to align with the axis in the 12 o'clock-6 o'clock direction in the analog watch. <Claim 19> The display device is housed in the case member so that a transmission axis for transmitting output light coincides with an axis in the 12 o'clock-6 o'clock direction of an analog timepiece, the antireflection layer of the display device has a substrate including a retardation film, 17. The timepiece according to claim 15 or 16, wherein the antireflection layer is arranged so that the direction in the substrate including the retardation film that maximizes light transmittance when viewed from the viewing side is at an angle of 45 degrees with respect to an axis in the 12 o'clock-6 o'clock direction in the analog timepiece. <Claim 20> The display device is housed in the case member so that a transmission axis for transmitting output light coincides with an axis in the 12 o'clock-6 o'clock direction of an analog timepiece, 17. The timepiece according to claim 15, wherein the antireflection layer of the display device includes at least a λ / 4 retardation film, and the λ / 4 retardation film is arranged so that its in-plane slow axis is oriented at 45 degrees with respect to the axis of the 12 o'clock-6 o'clock direction in the analog timepiece. <Claim 21> the display device is housed in the case member such that the transmission axis of a polarizing plate on the viewing side that transmits output light coincides with the axis of the 12 o'clock-6 o'clock direction of an analog timepiece; a first light antireflection layer is provided on a surface of the plate-shaped light transmitting member that contacts the air layer, and a second light antireflection layer is provided on a surface of the display member that contacts the air layer; The first light antireflection layer includes at least a linear polarizing film, and the transmission axis of the linear polarizing film is arranged to be aligned with the axis of the 12 o'clock-6 o'clock direction of the analog timepiece, and 17. The timepiece according to claim 15, wherein the second antireflection layer includes at least a λ / 4 retardation film, and the λ / 4 retardation film is arranged so that its in-plane slow axis is oriented at 45 degrees with respect to an axis in the 12 o'clock-6 o'clock direction in the analog timepiece. [Explanation of symbols]

[0080] 1 Case material 3 Display device 4 Display device 5 Display device 31 Windshield material (protective material) 311 Printing Department (Shielding Department) 312 Adhesive layer 32 Solar panel (plate-shaped light-transmitting material) 321 Base material 322a Power generation unit (shielding processing unit) 322b Thin wire power generation section 323 Light transmission part 324 Terminal section 33 Liquid crystal display (display components) 331 LCD Panel 332 Upper polarizer 333 Lower polarizer 334 LCD substrates 34 Air Layer 35 Anti-reflection layer 351 Base material 352 Moth Eye Structure 353 Small projection 36 Anti-reflection layer 361 Base material 362 Moth Eye Structure 37 Base material roll 38 Cutting die 39 Cutting die 55 Anti-reflection layer 56 Anti-reflection layer 651 Base material 661 Base material 100 Clocks

Claims

1. a protective member formed of a light-transmitting material; a light-transmitting solar panel disposed below the protective member without an air layer between the solar panel and the protective member; a display member provided below the light-transmitting solar panel and having a display area visible from the outside; an air gap disposed between the light-transmitting solar panel and the display member; an anti-reflection layer provided on at least one of a surface of the light-transmitting solar panel that contacts the air layer and a surface of the display member that contacts the air layer; are stacked, the antireflection layer has a moth-eye structure in which a plurality of small protrusions are arranged in a forested manner, A display device characterized in that, when a plurality of the antireflection layers are provided, the arrangement patterns of the small protrusions in the moth-eye structure portions of the antireflection layers are aligned.

2. A protective member formed of a light-transmitting material; a light-transmitting solar panel disposed below the protective member without an air layer between the solar panel and the protective member; a display member provided below the light-transmitting solar panel and having a display area visible from the outside; an air gap disposed between the light-transmitting solar panel and the display member; an anti-reflection layer provided on at least one of a surface of the light-transmitting solar panel that contacts the air layer and a surface of the display member that contacts the air layer; are stacked, The display device, wherein the antireflection layer includes a retardation film.

3. a protective member formed of a light-transmitting material; a light-transmitting solar panel disposed below the protective member; a display member provided below the light-transmitting solar panel without any air gap between the display member and the light-transmitting solar panel, the display member having a display area visible from the outside; an air layer disposed between the protective member and the light-transmitting solar panel; an anti-reflection layer provided on at least one of a surface of the protective member that contacts the air layer and a surface of the light-transmitting solar panel that contacts the air layer; are stacked, the antireflection layer has a moth-eye structure in which a plurality of small protrusions are arranged in a forested manner, A display device characterized in that, when a plurality of the antireflection layers are provided, the arrangement patterns of the small protrusions in the moth-eye structure portions of the antireflection layers are aligned.

4. A protective member formed of a light-transmitting material; a light-transmitting solar panel disposed below the protective member; a display member provided below the light-transmitting solar panel without any air gap between the display member and the light-transmitting solar panel, the display member having a display area visible from the outside; an air layer disposed between the protective member and the light-transmitting solar panel; an anti-reflection layer provided on at least one of a surface of the protective member that contacts the air layer and a surface of the light-transmitting solar panel that contacts the air layer; are stacked, The display device, wherein the antireflection layer includes a retardation film.

5. 3. The display device according to claim 1, wherein the anti-reflection layer is attached to at least one of the surface of the light-transmitting solar panel that comes into contact with the air layer and the surface of the display member that comes into contact with the air layer by an adhesive layer.

6. The antireflection layer has a surface that comes into contact with the air layer of the protective member via an adhesive layer.

5. The display device according to claim 3, wherein the light-transmitting solar panel is attached to at least one of the surfaces of the light-transmitting solar panel that come into contact with the air layer.

7. 3. The display device according to claim 1, wherein the anti-reflection layer is disposed on a surface of the light-transmitting solar panel member that contacts the air layer and a surface of the display member that contacts the air layer.

8. 5. The display device according to claim 3, wherein the anti-reflection layer is disposed on a surface of the protective member that contacts the air layer and a surface of the plate-shaped light-transmitting solar panel that contacts the air layer.

9. 9. The display device according to claim 1, further comprising a visibility restricting portion that restricts an area other than the display area of ​​the display member from being viewed from the outside.

10. 10. The display device according to claim 9, wherein the visibility restricting portion is a cover member disposed on the exterior or a shielding portion disposed on the viewing side of the display member in the stacking direction.

11. 9. The display device according to claim 1, wherein a power generation area is configured in a portion of the light-transmitting solar panel other than an area overlapping the display area of ​​the display member.

12. 9. The display device according to claim 1, wherein a power generation area is configured in a region of the light-transmitting solar panel that overlaps the display area of ​​the display member.

13. 13. The display device according to claim 1, wherein the antireflection layer has a moth-eye structure in which a plurality of small protrusions are arranged in a forest.

14. 14. The display device according to claim 13, wherein when a plurality of the antireflection layers are provided, the arrangement patterns of the small protrusions in the moth-eye structure of each of the antireflection layers are aligned.

15. 15. The display device according to claim 1, wherein the antireflection layer includes a retardation film.

16. 16. The display device according to claim 15, wherein when a plurality of the antireflection layers are provided, the retardation films in the antireflection layers are arranged so that the slow axes of the retardation films are aligned.

17. The antireflection layer includes a first antireflection layer and a second antireflection layer, the first light antireflection layer includes at least a linear polarizing film, 16. The display device according to claim 15, wherein the second antireflection layer includes at least a λ / 4 retardation film, and the λ / 4 retardation film is arranged so that an in-plane slow axis of the λ / 4 retardation film is oriented at 45 degrees with respect to a transmission axis of the linear polarizing film.

18. A display device according to any one of claims 1 to 17; A timepiece comprising: a case member that houses the display device.

19. The timepiece according to claim 18, wherein, when the anti-reflection layer of the display device has a moth-eye structure, the display device is arranged within the case member so that, when the display device is housed in the case member, an axis in the 12 o'clock-6 o'clock direction of the analog timepiece and an arrangement of small protrusions in the moth-eye structure are aligned.

20. the display device is housed in the case member such that a transmission axis for transmitting output light coincides with an axis in the 12 o'clock-6 o'clock direction of an analog timepiece; the antireflection layer of the display device has a substrate including a retardation film, The timepiece according to claim 18 or 19, characterized in that the anti-reflection layer is arranged so that the direction in which the light transmittance is maximized when viewed from the viewing side in the substrate including the retardation film is aligned with an axis in the 12 o'clock-6 o'clock direction in the analog timepiece.

21. the display device is housed in the case member such that the transmission axis of a polarizing plate on the viewing side that transmits output light coincides with the axis of the 12 o'clock-6 o'clock direction of an analog timepiece; The timepiece according to any one of claims 18 to 20, characterized in that the anti-reflection layer includes at least a linear polarizing film, and the transmission axis of the linear polarizing film is arranged so as to align with the axis in the 12 o'clock-6 o'clock direction in the analog timepiece.

22. the display device is housed in the case member such that a transmission axis for transmitting output light coincides with an axis in the 12 o'clock-6 o'clock direction of an analog timepiece; the antireflection layer of the display device has a substrate including a retardation film, The timepiece according to claim 18 or 19, characterized in that the anti-reflection layer is arranged so that the direction in which the light transmittance is maximized when viewed from the viewing side in the substrate including the retardation film is oriented at 45 degrees with respect to an axis in the 12 o'clock-6 o'clock direction in the analog timepiece.

23. the display device is housed in the case member such that a transmission axis for transmitting output light coincides with an axis in the 12 o'clock-6 o'clock direction of an analog timepiece; The timepiece according to claim 18 or 19, characterized in that the anti-reflection layer of the display device includes at least a λ / 4 phase difference film, and the in-plane slow axis of the λ / 4 phase difference film is arranged so as to be oriented at 45 degrees with respect to the axis in the 12 o'clock-6 o'clock direction in the analog timepiece.

24. the display device is housed in the case member such that the transmission axis of a polarizing plate on the viewing side that transmits output light coincides with the axis of the 12 o'clock-6 o'clock direction of an analog timepiece; a first light antireflection layer is provided on a surface of the plate-shaped light transmitting member that contacts the air layer, and a second light antireflection layer is provided on a surface of the display member that contacts the air layer; the first light antireflection layer includes at least a linear polarizing film, and the linear polarizing film is arranged so that the transmission axis of the linear polarizing film is aligned with the axis of the 12 o'clock-6 o'clock direction of the analog timepiece; and The timepiece according to claim 18 or 19, characterized in that the second light antireflection layer includes at least a λ / 4 phase difference film, and the in-plane slow axis of the λ / 4 phase difference film is arranged so as to be oriented at 45 degrees with respect to the axis in the 12 o'clock-6 o'clock direction in the analog timepiece.

Images