JP2009037183A - Display device and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the apparent area of a display area without increasing the size of the display device. <P>SOLUTION: Within the display area A1 of a display D, a light-reflecting layer 11 that reflects light emitted from light emission layer 15 to the observation side is formed. An exterior 40 has an opening part 42 formed in such a way that the display area A1 is located on the inside thereof and has a frame area A2 including a portion located outside the periphery Q2 of the display D. An antireflective plate 60 includes a circular polarizer 64 which suppresses the emission of external light made incident from the observation side and reflected from the light-reflecting layer 11 and the frame area A2 to the observation side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for displaying an image using an electro-optical layer such as a light emitting layer or a liquid crystal layer.

In a display body that uses the reflected light from the reflective layer formed on the back side of the electro-optic layer to emit light to the viewing side for display, external light incident on the display body from the viewing side is reflected by the reflective layer for observation. There is a problem in that the view on the viewing side of the display body is superimposed on the original image (the background is reflected). Patent Document 1 and Patent Document 2 disclose a technique for suppressing the reflection of a background by a circularly polarizing plate disposed on the observation side of the electro-optic layer.
Japanese Patent Laid-Open No. 8-322138 Japanese Patent Laid-Open No. 9-127858

  By the way, the display body is required to have a large screen. However, in order to realize an increase in the size of the display body, it is necessary to solve various problems such as an increase in manufacturing cost, a decrease in yield, an increase in size of a drive circuit and an increase in power consumption. In view of the above circumstances, an object of the present invention is to solve the problem of expanding the apparent display area without increasing the size of the display body.

  In order to solve the above problems, a display device according to the present invention includes a display body in which a light reflecting layer that reflects light emitted from an electro-optic layer to an observation side is formed in a display region, and a peripheral edge of the display body. A plate-shaped exterior body having an edge region including a portion located on the outside, and a plate material that covers both the display region and the edge region continuously, and is incident on the light reflecting layer or the edge region by entering from the observation side And an antireflection plate for suppressing emission of the reflected external light to the observation side. In the above configuration, since the antireflection plate is continuous over the display area and the edge area, the boundary between the display body and the exterior body is not conspicuous. Therefore, it is possible to enlarge the apparent display area without enlarging the display body. The display device according to the present invention is employed in various electronic devices.

  In a preferred aspect of the present invention, the optical characteristics in the edge area of the exterior body and the optical characteristics in the display area of the display body (when all pixels are not lit) are substantially the same. More specifically, the reflectance (%) when the measurement light is irradiated to the edge region of the exterior body through the antireflection plate, and the measurement light through the antireflection plate to the display region of the display body. The maximum value of the difference value (for example, the difference value Δ in FIG. 4) at the same wavelength as the reflectance (%) when irradiated is 3% or less within the range where the wavelength of the measurement light is 500 nm or more and 600 nm or less. According to this aspect, the boundary between the display body and the exterior body can be made particularly inconspicuous.

  In a specific aspect of the present invention, the exterior body is a frame-shaped member in which an opening is formed so that the display area of the display body is positioned inside the inner peripheral edge. Further, the display body includes a light shielding layer that shields the gap between the pixels, and the outer peripheral edge of the light shielding layer is located outside the inner peripheral edge of the exterior body. According to this aspect, since the outer periphery of the light shielding layer is located outside the inner periphery of the exterior body, there is a gap (for example, the region GB in FIG. 5) between the inner periphery of the exterior body and the outer periphery of the light shielding layer. Compared with the configuration, it is possible to make the boundary between the display body and the exterior body more inconspicuous.

  In a preferred aspect of the present invention, the exterior body is joined to the observation side surface of the display body, and the antireflection plate is joined to the observation side surface of the exterior body. In this aspect, since the antireflection plate is separated from the surface on the observation side of the display body, heat transfer from the display body to the antireflection plate is suppressed. Therefore, deterioration of the antireflection plate due to heating is suppressed. However, in a configuration in which the antireflection plate is separated from the observation side surface of the display body, light reflection occurs on the observation side surface of the display body and the back side surface of the antireflection plate. Accordingly, a display device according to a preferred aspect of the present invention includes an AR coating layer formed on at least one of a surface of the antireflection plate facing the display body and a surface of the display body facing the antireflection plate. (For example, a second embodiment described later). In addition, a display device according to another aspect includes a light-transmitting filler filled in a space between the surface on the observation side of the display body and the antireflection plate (for example, a third embodiment described later). According to each aspect described above, there is an advantage that reflection on the observation side surface of the display body and the back side surface of the antireflection plate is suppressed.

  In a preferred aspect of the present invention, the exterior body is a plate-like member disposed on the back side of the display body (for example, a fourth embodiment described later). According to this aspect, there is an advantage that the exterior body and the display body are easily joined and the mechanical strength of the display body is reinforced by the exterior body.

  In another aspect of the present invention, a light-shielding characteristic adjustment layer including a portion located outside the display area on the surface of the antireflection plate facing the display body (for example, the characteristic adjustment layer 80 in FIGS. 9 and 10). ) Is formed (for example, a fifth embodiment described later). According to the above aspect, even if the optical characteristics of the edge region of the exterior body do not match the optical characteristics of the display area of the display body, the optical characteristics of the characteristic adjustment layer and the display area of the display body are optical. By matching various characteristics, it is possible to make the periphery of the display body (the boundary between the display area and the characteristic adjustment layer) inconspicuous. In a more specific aspect, the characteristic adjustment layer includes a first layer formed on the back surface of the antireflection plate and a second layer formed on the surface of the first layer, and the second layer includes a plurality of layers. Are formed. According to the above aspect, it is possible to adjust the optical characteristics of the characteristic adjustment layer by appropriately selecting the form and distribution (total number and density) of each opening of the second layer. In addition, when one of the first layer and the second layer is formed with a film thickness that is thin enough to allow the light emitted from the display body to be sufficiently transmitted, the outer side and the inner side of the display area of the antireflection plate. A configuration in which the layer is formed on both sides (the entire area of the antireflection plate facing the display body) is also employed.

<A: First Embodiment>
FIG. 1 is an exploded perspective view showing the configuration of the display device 100 according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the display device 100. As shown in FIGS. 1 and 2, the display device 100 is a planar structure in which a display body D, an exterior body 40, and an antireflection plate 60 are stacked. The display body D displays various images using a plurality of pixels P arranged in a plane in the display area A1.

  As shown in FIG. 2, the display body D includes a first substrate 10 and a second substrate 20 that are joined by a light-transmitting adhesive layer 25. The second substrate 20 is located on the observation side of the first substrate 10 (that is, the viewer side viewing the display image by the display body D). A plurality of light reflecting layers 11 corresponding to the respective pixels P are formed on the surface of the first substrate 10 facing the second substrate 20 so as to be separated from each other. Each light reflecting layer 11 is a film body formed of a light reflecting material. A configuration in which the light reflecting layer 11 is continuous over the entire display area A1 is also employed.

  On the surface of the first substrate 10, a light-transmissive insulating layer 12 that covers each light reflecting layer 11 is formed. A plurality of first electrodes 14 corresponding to each pixel P are formed on the surface of the insulating layer 12 so as to be separated from each other. Each first electrode 14 is an electrode formed of a light-transmitting conductive material typified by ITO (Indium Tin Oxide). As shown in FIG. 2, the light reflecting layer 11 and the first electrode 14 overlap when viewed from the direction perpendicular to the first substrate 10.

  A partition layer (bank layer) 13 is formed on the surface of the insulating layer 12. The partition layer 13 is an insulating layer having a shape (lattice shape) that partitions the space on the surface of the first substrate 10 for each pixel P. A light emitting layer 15 is formed of an organic EL (Electroluminescence) material in a space surrounded by the inner peripheral surface of the partition wall layer 13 and having the first electrode 14 as a bottom surface. The partition layer 13 and the light emitting layer 15 are covered with the second electrode 16. The second electrode 16 is a light transmissive conductive film continuous over a plurality of pixels P. The light emitting layer 15 emits white light having a light amount corresponding to the electric energy applied from the first electrode 14 (anode) and the second electrode 16 (cathode). The light emitted from the light emitting layer 15 to the observation side and the reflected light from the light reflection layer 11 are transmitted through the second electrode 16 and emitted to the observation side, whereby various images are displayed. Each element on the first substrate 10 is sealed by a light-transmitting sealing body 17.

  The second substrate 20 is a light-transmitting plate material in which a light shielding layer 21 and a plurality of colored layers 22 (22R, 22G, 22B) are formed on the surface facing the first substrate 10. The light shielding layer 21 is formed in a lattice shape in which regions corresponding to the respective pixels P (regions overlapping the first electrode 14 and the light reflecting layer 11) are opened, and shields the gaps between the respective pixels P.

  FIG. 3 is a conceptual diagram showing a planar relationship between each part of the display device 100. However, the antireflection plate 60 is not shown in FIG. As shown in FIGS. 2 and 3, the outer dimension of the light shielding layer 21 is larger than the display area A1. Therefore, the outer peripheral edge Q1 of the light shielding layer 21 is located outside the display area A1.

  Each colored layer 22 is a light-transmitting film body colored in any of a plurality of display colors (red (22R), green (22G), and blue (22B)), and inside each opening of the light shielding layer 21. Formed. Accordingly, the plurality of colored layers 22 are arranged in a planar shape within the display area A1. The light emitted from the light emitting layer 15 is transmitted through each colored layer 22 and then emitted to the observation side, so that the observer perceives a color image.

  As shown in FIGS. 1 and 2, the exterior body 40 is an opaque frame-shaped plate material in which a rectangular opening 42 is formed. The exterior body 40 is bonded to the surface on the observation side of the display body D (that is, the surface on the observation side of the second substrate 20) with the double-sided tape 30. For example, an aluminum plate material painted in black is suitably used as the exterior body 40.

  As shown in FIGS. 2 and 3, the outer dimensions of the outer package 40 (the dimensions of each side of the outer peripheral edge R1) are the outer dimensions of the display body D (the dimensions of the respective sides of the first substrate 10 and the second substrate 20). ) Is larger than The exterior body 40 and the display body D are fixed so that the outer periphery R1 of the exterior body 40 is positioned outside the periphery Q2 of the display body D. That is, the observation-side surface (hereinafter referred to as “edge region”) A2 of the exterior body 40 includes a portion located outside the peripheral edge Q2 of the display body D. The display area A1 is located inside the opening 42 (inner periphery R2 of the exterior body 40), and the outer periphery Q1 of the light shielding layer 21 is located outside the opening 42 (inner periphery R2 of the exterior body 40).

  As shown in FIGS. 1 and 2, the antireflection plate 60 is a rectangular plate material formed in a form (size and shape) that matches the outer peripheral edge R <b> 1 of the exterior body 40, and is a first substrate of the display body D. Compared with 10 and the second substrate 20, the area is large. The antireflection plate 60 is joined to the edge region A2 so that the peripheral edge of the antireflection plate 60 and the outer peripheral edge R1 of the exterior body 40 coincide. Therefore, the antireflection plate 60 is continuous over the display area A1 and the edge area A2 so as to cover both the display body D and the exterior body 40 exposed in the opening 42 of the exterior body 40. As shown in FIG. 2, the thickness of the exterior body 40 and the double-sided tape 30 is between the back surface of the antireflection plate 60 and the observation surface of the display body D in the region inside the opening 42. A space V having an interval corresponding to is interposed. As described above, since the antireflection plate 60 and the display body D are separated from each other with the space V interposed therebetween, the heat generated in the display body D is compared with the configuration in which the antireflection plate 60 and the display body D are in close contact with each other. It is difficult to transmit to the antireflection plate 60. Therefore, there is an advantage that deterioration of the circularly polarizing plate 64 due to heating can be suppressed.

  As shown in FIGS. 1 and 2, the antireflection plate 60 includes a support body 62 and a circularly polarizing plate 64. The support 62 is a light transmissive plate that reinforces the mechanical strength of the circularly polarizing plate 64. A substrate made of glass or resin (for example, acrylic resin or polycarbonate resin) is preferably employed as the support 62. The circularly polarizing plate 64 includes a retardation plate 641 attached to the observation side surface of the support 62 and a polarizing plate 642 attached to the surface of the retardation plate 641. Therefore, even when external light enters the display device 100 from the observation side and is reflected by the surface of the light reflection layer 11 or the edge region A2 of the exterior body 40, the emission of the reflected light to the observation side is suppressed. Is done.

  FIG. 4 is a graph showing the characteristics of the reflected light emitted to the observation side when visible light (hereinafter referred to as “measurement light”) having a predetermined spot diameter is irradiated on each part of the display device 100 from the observation side. In the figure, the horizontal axis represents the wavelength (nm) of the measurement light, and the vertical axis represents the reflectance (that is, the ratio (%) of the amount of reflected light to the amount of measurement light).

  The characteristic C1 in FIG. 4 is a result of measurement when the measurement light is irradiated in the display area A1 after the light emitting layer 15 of all the pixels P is completely turned off in the configuration excluding the antireflection plate 60. . On the other hand, the characteristic C2 is that, in the configuration of the present embodiment in which the antireflection plate 60 is installed, the light emitting layer 15 of all the pixels P is completely turned off, and the measurement light is transmitted into the display area A1 through the antireflection plate 60. It is the result of the measurement when irradiated. As understood from the comparison between the characteristic C1 and the characteristic C2, the incident light from the observation side to the display device 100 is reflected by each element (particularly the light reflection layer 11) of the display body D and is emitted to the observation side. The amount of light is sufficiently suppressed by the antireflection plate 60. Therefore, it is possible to suppress the reflection of the background.

  The characteristic C3 in FIG. 4 is the result of measurement when the edge region A2 of the exterior body 40 is irradiated with measurement light through the antireflection plate 60 under the configuration of the present embodiment in which the antireflection plate 60 is installed. As understood from the comparison between the characteristic C2 and the characteristic C3, in this embodiment, the light reflection characteristic in the edge region A2 of the exterior body 40 and the light reflection characteristic in the display region A1 of the display body D are substantially matched. In addition, the optical characteristics of each element of the edge region A2 of the exterior body 40 and the display body D are selected. More specifically, the reflected light is measured by individually irradiating each of the edge area A2 of the exterior body 40 and the display area A1 of the display body D, and the same wavelength is measured when irradiating each area. When the difference value Δ of the reflectance is calculated, the outer package 40 has a maximum difference value Δ of 3% or less (more preferably 1% or less) in the wavelength range R of 500 nm to 600 nm. The optical characteristics (more specifically, materials and processing methods) of each element of the edge region A2 and the display body D are selected. For example, the exterior body 40 can be obtained by applying a coating material having optical characteristics that satisfies the above conditions for the reflectance measured in advance in the display area A1 of the display body D to the surface (edge area A2) of the plate material. Is created.

  As described above, in the present embodiment, the antireflection plate 60 in a form (size and shape) continuous across the display area A1 and the edge area A2 is installed so as to cover both the exterior body 40 and the display body D. The Accordingly, not only the reflection of the background is suppressed, but also the boundary between the exterior body 40 and the display body D compared to the configuration in which the antireflection plate 60 is not installed or the configuration in which the antireflection plate 60 overlaps only the display area A1. Can be made inconspicuous. Particularly in the present embodiment, the characteristics of the exterior body 40 and the display body D are selected so that the light reflection characteristics (reflectance) are substantially the same in the edge area A2 and the display area A1, and thus the above effects are particularly remarkable. It becomes. Since the boundary between the exterior body 40 and the display body D becomes unclear, the user can continuously display the display area of the display device 100 to the vicinity of the outer periphery R1 of the exterior body 40 (entire region of the antireflection plate 60). Perceive as if you were doing. That is, in this embodiment, the apparent display area can be increased without increasing the size of the display device 100.

  When the entire display area A1 is caused to emit light, the boundary between the display area A1 and the non-light emitting edge area A2 is perceived by the user, so that the apparent area of the display area is enlarged. An image in which a subject is arranged in the center of the display area A1 with black as a background when the light emitting layer 15 is turned off (that is, a non-light emitting area other than the subject in the display area A1 has optical characteristics). This is particularly effective when displaying an image that is aligned with the edge region A2.

  In the above description, the measurement result when the measurement light is irradiated into the display area A1 is exemplified as the characteristic C2. However, the area outside the display area A1 and inside the opening 42 of the exterior body 40 (light shielding layer 21). The result of measurement when GA is irradiated with measurement light is substantially equivalent to the characteristic C2. Therefore, the optical characteristics of the exterior body 40 and the display body D may be selected so that the light reflection characteristics of the area GA and the light reflection characteristics of the edge area A2 of the exterior body 40 substantially coincide.

  2, the outer peripheral edge Q1 of the light shielding layer 21 is located outside the opening 42 of the exterior body 40. However, the outer peripheral edge Q1 of the light shielding layer 21 is the opening of the exterior body 40 as shown in FIG. A configuration located inside the portion 42 (inner peripheral edge R2) is also employed. The characteristic C4 in FIG. 4 is the result of measuring the reflectance by irradiating the region GB between the outer peripheral edge Q1 of the light shielding layer 21 and the inner peripheral edge R2 of the exterior body 40 in the configuration of FIG.

  Since a wiring (not shown) for supplying a drive signal and a power supply potential is formed in the display area A1 in the area corresponding to the area GB in the first substrate 10, the characteristic C4 of the area GB is shown in FIG. As shown in FIG. 6, the characteristic C3 of the edge region A2 of the outer package 40 and the characteristic C2 of the display region A1 are different. Therefore, in the configuration of FIG. 5, although the effect that the boundary between the exterior body 40 and the display body D is not conspicuous as compared with the configuration in which the antireflection plate 60 is eliminated (characteristic C1), Compared with the configuration of 2, the possibility that the boundary is perceived is high. That is, in the configuration of FIG. 2, since the outer peripheral edge Q1 of the light shielding layer 21 is located outside the inner peripheral edge R2 of the outer package 40, the boundary between the outer package 40 and the display body D is compared with the configuration of FIG. There is an advantage that it doesn't stand out.

<B: Second Embodiment>
Next, a second embodiment of the present invention will be described. In addition, about the element in which an effect | action and a function are equivalent to 1st Embodiment in each following form, the same code | symbol as the above is attached | subjected and each detailed description is abbreviate | omitted suitably.

  FIG. 6 is a cross-sectional view showing the configuration of the display device 100 according to the second embodiment of the present invention. As shown in the figure, an AR (Anti Reflection) coat layer 70 (70A, 70B, 70C) for suppressing reflection on the surface of the light transmissive element of the display device 100 that is in contact with air. Is formed. More specifically, an AR coating layer 70A is formed on the observation-side surface of the antireflection plate 60 (circularly polarizing plate 64), and an AR coating layer 70B is formed on the back surface of the antireflection plate 60 (support 62). Is formed. In addition, an AR coat layer 70C is formed on the observation side surface of the display body D (second substrate 20).

  In the configuration of the first embodiment, since the surface on the back side of the antireflection plate 60 and the surface on the observation side of the display body D are in contact with air, the emitted light from the light emitting layer 15 is easily reflected on the surface. On the other hand, in the present embodiment, reflection on the surface on the back side of the antireflection plate 60 and the surface on the observation side of the display body D is suppressed by the AR coat layer 70 (70B, 70C). It is possible to increase the utilization efficiency of the emitted light. Further, since the AR coating layer 70A is also formed on the observation-side surface of the antireflection plate 60, there is an advantage that reflection of the background due to reflection on the surface is effectively prevented.

<C: Third Embodiment>
FIG. 7 is a cross-sectional view showing the configuration of the display device 100 according to the third embodiment of the present invention. As shown in the figure, the surface on the back side of the antireflection plate 60 (support body 62), the surface on the observation side of the display body D (second substrate 20), and the inner peripheral surface of the opening 42 of the exterior body 40. A light-transmissive filler 75 is enclosed in the enclosed space V. The filler 75 is made of, for example, a resin material. The refractive index of the filler 75 is equal to the refractive index of at least one of the support body 62 and the second substrate 20.

  According to the above configuration, the difference in refractive index between the inside of the space V and the support body 62 or the second substrate 20 is reduced as compared with the configuration in which air exists in the space V. Light reflection on the back side surface and the observation side surface of the display D is suppressed. Therefore, it is possible to improve the utilization efficiency of the emitted light from the light emitting layer 15 regardless of the configuration in which the AR coating layers 70B and 70C in the second embodiment are omitted. 7 may be provided with the AR coating layers 70B and 70C shown in FIG.

<D: Fourth Embodiment>
FIG. 8 is a cross-sectional view showing the configuration of the display device 100 according to the fourth embodiment. As shown in FIG. 8, the exterior body 40 in this embodiment is a plate-like member disposed on the back side of the display body D. No opening is formed in the outer package 40. The surface on the back side of the display body D (first substrate 10) is bonded to the surface of the exterior body 40. Of the surface on the observation side of the outer package 40, the region outside the peripheral edge Q2 of the display body D is the edge region A2. The light shielding layer 21 of the display body D is formed over the entire area of the second substrate 20.

  The antireflection plate 60 is installed so as to be continuous over the edge region A2 and the display region A1, and covers the exterior body 40 and the display body D. Further, as in the first embodiment, the edge region A2 of the exterior body 40 and the light reflection characteristics in the edge region A2 of the exterior body 40 and the light reflection characteristics in the display area A1 of the display body D are substantially matched. The optical characteristics of each element of the display body D are selected. Therefore, the same effects as those of the first embodiment can be obtained in this embodiment. Furthermore, according to the present embodiment, there is an advantage that the work of joining the exterior body 40 and the display body D is facilitated and the mechanical strength of the display body D is reinforced by the exterior body 40. Note that the AR coating layer 70 (70A, 70B, 70C) of the second embodiment and the filler 75 of the third embodiment may be employed in the display device 100 of the present embodiment.

<E: Fifth Embodiment>
FIG. 9 is a cross-sectional view showing the configuration of the display device 100 according to the fifth embodiment. As shown in FIG. 9, the display device 100 of the present embodiment has a configuration in which a characteristic adjustment layer 80 is added to the display device 100 of the first embodiment. The characteristic adjustment layer 80 is formed so as to cover an area located outside the display area A1 of the display body D among the back surface of the antireflection plate 60 (that is, the surface of the support body 62 facing the display body D). This is a light-reflective (light-shielding) film body. The characteristic adjustment layer 80 is formed of a resin material in which a black material such as carbon black is dispersed or a light shielding metal material such as chromium. Alternatively, the characteristic adjustment layer 80 may be formed by applying a black paint to the antireflection plate 60.

  The processing method, material, and film thickness of the characteristic adjustment layer 80 are such that the light reflection characteristics of the contact surface of the characteristic adjustment layer 80 with the antireflection plate 60 and the light reflection characteristics of the display region A1 of the display body D substantially coincide. Selected. That is, the characteristic adjustment when the edge region A2 of the exterior body 40 and the display region A1 of the display body D are irradiated with light rays in the wavelength range R of 500 nm or more and 600 nm or less in the same manner as described above with reference to FIG. The characteristic adjustment layer 80 is formed such that the maximum value of the difference value Δ between the reflectance of the layer 80 and the reflectance of the display area A1 is 3% or less (more preferably 1% or less).

  As described above, since the optical characteristics of the characteristic adjustment layer 80 positioned on the observation side with respect to the outer package 40 match the display area A1, the edge area A2 of the outer package 40 and the display area A1 of the display body D Even if the light reflection characteristics (reflectance) are different, the same effect as the first embodiment that the area of the apparent display area can be enlarged is produced. Therefore, the present invention is particularly suitable when it is difficult to match the optical characteristics of the outer package 40 to the display area A1 (for example, when the material and processing method of the outer package 40 are limited). In other words, since the optical conditions required for the exterior body 40 are relaxed, the exterior body 40 can be produced at low cost.

  9 illustrates a configuration in which the characteristic adjustment layer 80 is a single layer, but a configuration in which the characteristic adjustment layer 80 is a multilayered structure as illustrated in FIG. 10 is also suitable. The characteristic adjustment layer 80 in FIG. 10 includes a first layer 81 and a second layer 82. The first layer 81 is a light-reflective (light-shielding) film body formed on the surface on the back side of the antireflection plate 60 (region outside the display region A1). The second layer 82 is a light-shielding film body laminated on the first layer 81. The first layer 81 and the second layer 82 are separate materials selected from various light shielding materials such as a resin material in which a black material such as carbon black is dispersed and a light shielding metal material such as aluminum and chromium. It is formed. For example, a configuration in which the first layer 81 is formed of one of aluminum and chromium and the second layer 82 is formed of the other of aluminum and chromium is preferable. As shown in FIG. 10, a large number of openings 821 are formed (patterned) in the second layer 82. Each opening 821 is uniformly distributed in the plane of the second layer 82. For example, the second layer 82 is formed to have the same pattern as the light shielding layer 21 of the display body D.

  Since the first layer 81 is formed with a sufficiently thin film thickness, the optical characteristics of the contact surface of the characteristic adjustment layer 80 with the antireflection plate 60 are the characteristics of the second layer 82 in addition to the characteristics of the first layer 81. It depends on the characteristics. That is, the optical characteristics of the characteristic adjustment layer 80 change according to the size and distribution (total number and density) of the openings 821 formed in the second layer 82. Therefore, by appropriately selecting the size and distribution of the openings 821 of the second layer 82, the light reflection characteristics of the characteristic adjustment layer 80 are matched with the display area A1 of the display body D with high accuracy (that is, with the characteristic adjustment layer 80 and It is possible to make the boundary with the display area A1 inconspicuous). 9 and 10 exemplify the case where the characteristic adjustment layer 80 is added to the display device 100 of the first embodiment, but the characteristic adjustment layer 80 is configured in FIGS. 6 to 8 (or FIG. 11 described later). A configuration in which is added is also suitable.

  In the example of FIG. 10, the first layer 81 and the second layer 82 are formed only in the area outside the display area A1, but the film thickness is such that the emitted light from the display body D is sufficiently transmitted to the observation side. When the first layer 81 is formed (for example, when a sufficiently thin aluminum thin film is formed as the first layer 81), the first layer 81 is formed over the entire surface on the back side of the antireflection plate 60. Also good. According to the above configuration, patterning is not necessary when the first layer 81 is formed. Also, a method of adjusting the light reflection characteristics of the characteristic adjustment layer 80 by appropriately selecting the film thickness of the characteristic adjustment layer 80 in FIG. 9 and the film thickness of at least one of the first layer 81 and the second layer 82 in FIG. Is also suitable.

<F: Modification>
Various modifications can be made to each of the above embodiments. An example of a specific modification is as follows. Two or more aspects may be arbitrarily selected from the following examples and combined.

(1) Modification 1
The form and position of the exterior body 40 are not limited to the above examples. For example, as shown in FIG. 11, an opening 42 having a size that substantially matches (or slightly larger) the outer shape of the display body D is formed in the exterior body 40, and the side end surface of the display body D and the inner periphery of the opening 42 are formed. You may arrange | position the display body D inside the opening part 42 so that a surface may oppose. That is, the edge region A2 of the exterior body 40 is located only outside the peripheral edge Q2 of the display body D. Furthermore, as shown in FIG. 11, according to the configuration in which the surface on the observation side of the display body D (second substrate 20) and the edge region A2 are positioned in the same plane, the antireflection plate 60 is displayed as the exterior body 40. There is an advantage that the display device 100 can be easily and firmly joined to the body D and the display device 100 can be thinned.

(2) Modification 2
If the mechanical strength of the circularly polarizing plate 64 is ensured independently to the extent necessary for manufacturing and using the display device 100, a configuration in which the support 62 is omitted from the antireflection plate 60 is also employed. In order to prevent the circularly polarizing plate 64 from being damaged by the action of external force, a light-transmitting plate material may be disposed on the observation side of the circularly polarizing plate 64.

(3) Modification 3
The light emitting layer 15 of the organic EL material is only an example of the electro-optical layer. With respect to the electro-optic layer applied to the display device 100 of each of the above forms, by distinguishing between a self-luminous type that emits light itself and a non-luminous type that changes the transmittance of external light (for example, a liquid crystal element), or by supplying a current The distinction between the driven current driving type and the voltage driving type driven by applying a voltage is not questioned. Various electro-optical layers such as a light emitting layer, a liquid crystal layer, and an electrophoretic layer of an inorganic EL material are used in the display device of the present invention. In other words, the electro-optical layer is defined as a portion where optical characteristics such as luminance and transmittance are changed by supplying electric energy (for example, supplying current or applying voltage).

<G: Application example>
Next, an electronic apparatus using the display device according to the present invention will be described. FIG. 12 to FIG. 14 show forms of electronic devices that employ the display device 100 according to any of the forms described above.

  FIG. 12 is a perspective view showing the configuration of a mobile personal computer that employs the display device 100. The personal computer 2000 includes a display device 100 that displays various images, and a main body 2010 on which a power switch 2001 and a keyboard 2002 are installed.

  FIG. 13 is a perspective view illustrating a configuration of a mobile phone to which the display device 100 is applied. A cellular phone 3000 includes a plurality of operation buttons 3001, scroll buttons 3002, and a display device 100 that displays various images. By operating the scroll button 3002, the screen displayed on the display device 100 is scrolled.

  FIG. 14 is a perspective view illustrating a configuration of a personal digital assistant (PDA) to which the display device 100 is applied. The portable information terminal 4000 includes a plurality of operation buttons 4001, a power switch 4002, and the display device 100 that displays various images. When the power switch 4002 is operated, various information such as an address book and a schedule book are displayed on the display device 100.

  Note that electronic devices to which the display device according to the present invention is applied include, in addition to the devices illustrated in FIGS. 12 to 14, digital still cameras, televisions, video cameras, car navigation devices, pagers, electronic notebooks, electronic papers, Examples include calculators, word processors, workstations, videophones, POS terminals, printers, scanners, copiers, video players, devices equipped with touch panels, and on-board instruments (instrument panels) for automobiles.

1 is an exploded perspective view of a display device according to a first embodiment of the present invention. It is sectional drawing of a display apparatus. It is a top view which shows the relationship of each part of a display apparatus. It is a graph which shows the optical characteristic of each part of a display apparatus. It is sectional drawing of the display apparatus which concerns on another example. It is sectional drawing of the display apparatus which concerns on 2nd Embodiment of this invention. It is sectional drawing of the display apparatus which concerns on 3rd Embodiment of this invention. It is sectional drawing of the display apparatus which concerns on 4th Embodiment of this invention. It is sectional drawing of the display apparatus which concerns on 5th Embodiment of this invention. It is sectional drawing of the display apparatus which concerns on the other aspect of 5th Embodiment. It is sectional drawing of the display apparatus which concerns on a modification. It is a perspective view which shows the form (personal computer) of the electronic device which concerns on this invention. It is a perspective view which shows the form (cellular phone) of the electronic device which concerns on this invention. It is a perspective view which shows the form (mobile information terminal) of the electronic device which concerns on this invention.

Explanation of symbols

D: Display body, 10: First substrate, 11: Light reflecting layer, 12: Insulating layer, 13: Partition layer, 14: First electrode, 15: Light emitting layer, 16: Second Electrode, 17... Sealed body, 20... Second substrate, 21... Light-shielding layer, 22 (22R, 22G, 22B) ... Colored layer, 40. Anti-reflective plate, 62 ... support, 64 ... circularly polarizing plate, 70 (70A, 70B, 70C) ... AR coating layer, 75 ... filler, 80 ... characteristic adjustment layer, 81 ... first layer 82 ... second layer, A1 ... display area, A2 ... edge area, Q1 ... outer periphery of light shielding layer 21, Q2 ... peripheral edge of display body D, R1 ... outer peripheral edge of exterior body 40, R2 ... the inner periphery of the outer body 40, V ... space.

Claims (10)

A display body in which a light reflecting layer for reflecting light emitted from the electro-optic layer to the observation side is formed in the display region;
A plate-shaped exterior body having an edge region including a portion located outside the periphery of the display body;
A plate material that covers both the display area and the edge area continuously, and suppresses emission of external light incident on the observation side and reflected by the light reflecting layer or the edge area to the observation side. A display device comprising: an antireflection plate. The reflectance (%) when the measurement light is irradiated to the edge region of the exterior body via the antireflection plate, and the measurement light to the display region of the display body via the antireflection plate 2. The display device according to claim 1, wherein a maximum value of a difference value at the same wavelength as the reflectance (%) when the light is irradiated is 3% or less within a range where the wavelength of the measurement light is 500 nm or more and 600 nm or less. The display device according to claim 1, wherein the exterior body is a frame-shaped member in which an opening is formed so that the display area of the display body is positioned inside an inner peripheral edge. The display body includes a light shielding layer that shields a gap between the pixels,
The display device according to claim 3, wherein an outer peripheral edge of the light shielding layer is positioned outside an inner peripheral edge of the exterior body. The exterior body is bonded to the surface on the observation side of the display body,
The display device according to claim 3, wherein the antireflection plate is bonded to a surface on the observation side of the exterior body. The display device according to claim 5, further comprising: an AR coating layer formed on at least one of a surface of the antireflection plate facing the display body and a surface of the display body facing the antireflection plate. The display device according to claim 5, further comprising: a light transmissive filler filled in a space between the surface on the observation side of the display body and the antireflection plate. The display device according to claim 1, wherein the exterior body is a plate-like member disposed on the back side of the display body. 9. The display device according to claim 1, wherein a light-shielding characteristic adjustment layer including a portion located outside the display region is formed on a surface of the antireflection plate facing the display body. . An electronic apparatus comprising the display device according to claim 1.

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