JP5035168B2 - Display device - Google Patents

Description

  The present invention relates to a display device including an organic EL panel and a circularly polarizing plate.

  Conventionally, as disclosed in Patent Documents 1 and 2, for example, a display device including an organic EL panel and a circularly polarizing plate for improving a contrast ratio of display light of the organic EL panel is known.

  In the display device disclosed in Patent Document 1, a translucent substrate having a circularly polarizing plate attached to the front surface and a reflective plate attached to the rear surface is disposed with the rear surface facing the organic EL panel. . The circularly polarizing plate is provided so as to cover the organic EL panel, and the reflection plate is provided around the organic EL panel. As a result, when external light is incident, the external light is reflected by the reflector in the same manner as the second electrode (cathode) of the organic EL panel.

In the display device disclosed in Patent Document 2, a glass substrate on which a circularly polarizing plate is attached to the front surface and a light-shielding layer made of a black printing layer is formed on the rear surface is disposed with the rear surface facing the organic EL panel. Has been. And the light shielding layer has a window part smaller than the area | region in which the 2nd electrode (cathode) which consists of metals was formed. Thereby, in the area | region where the light shielding layer was provided, when external light injects, most external light is absorbed.
JP 2005-71944 A JP 2005-276521 A

  By the way, as shown in Patent Document 2, in the segment-type organic EL panel, a portion of the laminated body corresponding to the opening of the insulating film is a light emitting region (segment display portion) having a predetermined shape. In Patent Document 2, the left turn arrow shown in FIG. Therefore, only the portion corresponding to the opening in the cathode is the light emitting region, and the region corresponding to the peripheral region of the light emitting region (hereinafter simply referred to as the peripheral region) is insulated for electrical separation from the anode. It is provided on the substrate through a film.

  With the configuration described above, when external light is incident on a display device having a segment type organic EL panel, the reflection of the cathode made of a metal material that is transmitted through the insulating film and reflected by the cathode in the area corresponding to the surrounding area. It becomes light. That is, the color of the reflected light is affected not only by the cathode but also by the transmitted color of the insulating film. Thereby, the color tone of the region provided with the reflector and the light shielding layer is different from the color tone of the region of the organic EL panel corresponding to the peripheral region of the cathode surrounded by the region, and is substantially perpendicular to the stacking direction of the stacked body. In the direction, the boundary between the two areas is clear, and it looks bad.

  In view of the above problems, the present invention has an object to provide a display device with improved appearance.

In order to achieve the above-mentioned object, the invention according to claim 1 is formed by sequentially laminating an anode, an insulating film having an opening on the anode, an organic film including a light emitting layer, and a cathode made of a metal material on a substrate. An organic EL panel in which a portion corresponding to the opening in the stacked body is a segment display section as a light emitting region, and the organic EL panel is covered on the back side of the anode arrangement surface of the substrate And a circularly polarizing plate arranged as described above. A window that is smaller than the outer peripheral portion of the region surrounding the light emitting region where the cathode and the insulating film overlap each other on the surface opposite to the substrate in the circularly polarizing plate and larger than the opening. The reflective member having a portion is arranged, corresponding to the arrangement region of the reflective member, between the surface facing the substrate in the circularly polarizing plate and the reflective member, or on the back surface of the surface facing the substrate in the circularly polarizing plate In addition, a color tone adjusting member whose transmission color is substantially the same as that of the insulating film is disposed, and the reflecting member and the color tone adjusting member are both formed on a circularly polarizing plate, and the color tone adjusting member has the same constituent material and the same thickness as the insulating film. characterized in that it consists of.

  In the present invention, the reflective member surrounds a light emitting region (hereinafter referred to as a surrounding region) in which the cathode and the insulating film overlap each other in a direction substantially perpendicular to the stacking direction of the stacked body (hereinafter simply referred to as a vertical direction). ) And a window portion larger than the light emitting region. That is, in the vertical direction, the annular window opening end of the reflecting member is positioned so as to overlap with the portion corresponding to the peripheral region of the cathode. In other words, in the vertical direction, the region provided with the reflecting member is adjacent to the peripheral region of the organic EL panel surrounded by the region. Further, in accordance with the arrangement region of the reflecting member, the transmission color is changed between the surface facing the substrate in the circularly polarizing plate and the reflecting member, or on the back surface of the surface facing the substrate in the circularly polarizing plate. Substantially equal color tone adjusting members are arranged. With this color tone adjusting member, when external light is incident, the color of the reflected light through the color tone adjusting member by the reflecting member is the same as the color of the reflected light through the insulating film by the portion corresponding to the peripheral region in the cathode. It is almost equal. That is, the color tone of the region where the reflecting member and the color tone adjusting member are provided is substantially equal to the color tone of the surrounding region of the organic EL panel surrounded by the region. As described above, according to the present invention, it is possible to improve the appearance by eliminating almost the boundary between these two adjacent regions in the vertical direction. As a result, the two regions look as if they are one color tone regions made up of a single member. Therefore, the region provided with the reflection member and the color tone adjustment member is a part of the surrounding region of the organic EL panel (display surface in the display device). Can be seen as: Therefore, the size of the organic EL panel can be reduced, the number of substrates obtained from the base material can be increased, and the manufacturing cost can be reduced.

  Further, as described above, the reflecting member has a window portion that is smaller than the outer peripheral portion of the surrounding region in the organic EL panel and larger than the light emitting region. Therefore, even when a slight deviation occurs in the positional relationship between the organic EL panel and the reflecting member in the vertical direction during assembly, the position of the annular window opening end in the reflecting member is set to a portion corresponding to the surrounding region in the cathode. It can be set as the overlapping position. That is, it is possible to ensure the adjacent state between the region where the reflecting member and the color tone adjusting member are provided and the peripheral region of the organic EL panel.

Further, as described above , both the reflecting member and the color tone adjusting member are formed on the circularly polarizing plate . Therefore, by positioning the circularly polarizing plate with respect to the organic EL panel, the positions of the reflecting member and the color tone adjusting member can also be determined with respect to the organic EL panel. Thereby, position accuracy can be improved.

Further, as described above, a color tone adjusting member made of the same constituent material and the same thickness as the insulating film is employed . According to this, the color tone of the area where the reflection member and the color tone adjustment member are provided can be made closer to the color tone of the surrounding area of the organic EL panel surrounded by the area.

As described in claim 2 , the reflecting member and the color tone adjusting member may both be formed using a screen printing method. According to this, since the same screen printing method is used, the manufacturing process can be simplified.

According to a third aspect of the present invention , a configuration may be adopted in which a plurality of organic EL panels and one circularly polarizing plate are provided, and reflecting members corresponding to the respective organic EL panels are integrated as one frame. According to this, while suppressing the size of each organic EL panel, the range including all the organic EL panels and provided with the reflecting member can be made to appear as one large display surface. For example, when a vehicle navigation device is set as an option and the monitor of the device also displays information on air conditioners and audio, when the navigation device is not set, the entire arrangement area of the monitor or the like If it is filled only with an organic EL panel having a segment display unit for displaying audio information, the cost increases. On the other hand, if it is the said structure, a manufacturing cost can be reduced in such a case.

As described in claim 4 , a translucent holding plate for holding the circularly polarizing plate is disposed on the back surface of the circularly polarizing plate facing the substrate, and the circularly polarizing plate is sandwiched between the substrate and the holding plate. It is good to have a configuration. According to this, the circularly polarizing plate can be protected from scratches or the like by the holding plate. Further, the flatness of the circularly polarizing plate can be secured by the holding plate, and the appearance can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a plan view showing a schematic configuration of an organic EL panel in the display device according to the first embodiment, viewed from the laminated body side. FIG. 2 is a plan view seen from the organic EL panel side showing a schematic configuration of the display device. In FIGS. 1 and 2, for convenience, the sealing cap, the adhesive member that bonds the sealing cap to the substrate, and the moisture absorbing member are omitted. 3 is a cross-sectional view taken along line III-III in FIG. In the following, the stacking direction of the stacked body 12 (the thickness direction of the substrate 11) is simply referred to as the stacking direction, and the direction substantially perpendicular to the stacking direction is simply referred to as the vertical direction.

  As shown in FIG. 3, the display device 100 includes an organic EL panel 10, a circularly polarizing plate 30, a reflecting member 31, a color tone adjusting member 32, and a holding plate 50.

  As shown in FIGS. 1 and 3, the organic EL panel 10 includes a substrate 11, an anode 14, an insulating film 15, an organic film 16 including a light emitting layer, and a cathode 17, which are sequentially stacked on the surface 11 a of the substrate 11. It has a laminated body 12 and a sealing cap 13 that seals the laminated body 12, and is of a segment type having a segment display portion S1 as a light emitting region.

  The substrate 11 plays a role as a base material (base material), and a transparent substrate made of glass or plastic can be adopted. In this embodiment, a glass substrate having a substantially rectangular plane is employed as the substrate 11. An anode 14 as a lower electrode is laminated on the surface 11a of the substrate 11 by sputtering or vapor deposition. As a constituent material of the anode 14, a material having conductivity and light transmittance such as indium tin oxide (ITO) can be employed. In the present embodiment, the anode 14 having a substantially rectangular shape made of ITO (a region surrounded by a one-dot chain line shown in FIG. 1) is employed. A reference numeral 14a shown in FIG. 1 is a wiring portion that is formed from the anode 14 toward the end portion of the substrate 11 for applying a voltage between the anode 14 and the cathode 17, and in the present embodiment, this wiring The part 14a is also formed of ITO.

  In addition, an insulating film 15 is integrally laminated around a part of the anode 14 and the periphery of the anode 14 on the surface 11a of the substrate 11 by photolithography or the like. This insulating film 15 is for ensuring electrical insulation between the anode 14 and the cathode 17, and for example, a polyimide-based or novolac-based insulating material can be employed. In the present embodiment, a brown transparent novolac resin is employed. The insulating film 15 has an opening 15a in a part of the upper surface of the anode 14, and the shape of the segment display portion S1 as a light emitting region in the organic EL panel 10 is defined by the opening 15a. . In the present embodiment, as shown in FIG. 1, the outer peripheral portion of the insulating film 15 in the vertical direction is formed in a substantially rectangular shape surrounding the outer peripheral portion of the anode 14 (dotted line in FIG. 1). The laminated portion is provided with an arrow-shaped opening 15a, and the segment display portion S1, which is a light emitting region, has an arrow shape. In the present embodiment, as shown in FIG. 1, a part of the wiring part 14a and a wiring part 17a described later are exposed from the insulating film 15, but are electrically connected to external devices in the wiring parts 14a and 17a. The entire portion excluding the end portion (connection portion) to be formed may be covered with the insulating film 15.

  An organic film 16 is laminated on the insulating film 15 by vapor deposition or the like. As the organic film 16, a well-known configuration, that is, a single layer type including only a light emitting layer or a multilayer type including a hole injection layer other than the light emitting layer, a hole transport layer, an electron transport layer, an electron injection layer, and the like is adopted. be able to. The organic film 16 may be disposed with a predetermined size so as to correspond to at least the segment display portion S1. In the present embodiment, as shown in FIG. 1, the outer peripheral portion of the organic film 16 in the vertical direction (two-dot chain line in FIG. 1) surrounds the outer peripheral portion of the anode 14 (one-dot chain line in FIG. 1), and It has a substantially rectangular shape surrounded by the outer peripheral portion of the insulating film 15.

  A cathode 17 as an upper electrode is laminated on the organic film 16 by sputtering or vapor deposition. As a constituent material of the cathode 17, a conductive metal material such as aluminum can be employed. This cathode 17 should just be arrange | positioned with a magnitude | size larger than at least segment display part S1. In the present embodiment, the cathode 17 is made of aluminum, and as shown in FIG. 1, the outer peripheral portion of the cathode 17 in the vertical direction is the outer peripheral portion of the anode 14 (dashed line in FIG. 1) and the outer peripheral portion of the organic film 16 ( 1 is a substantially rectangular shape surrounding a two-dot chain line in FIG. 1 and surrounded by an outer peripheral portion of the insulating film 15. That is, the outer peripheral portion of the planar rectangular cathode 17 is the outer peripheral portion 20 of the surrounding region S2 surrounding the segment display portion S1 with the cathode 17 and the insulating film 15 overlapping each other. A reference numeral 17a shown in FIG. 1 is a wiring portion that is formed so as to be drawn from the cathode 17 toward the end portion of the substrate 11 for applying a voltage between the anode 14 and the cathode 17, and in this embodiment, this wiring The part 17a is also formed of ITO.

  Thus, in the organic EL panel 10, the laminate 12 is configured on the surface 11 a of the substrate 11. The organic EL panel 10 corresponds to the segment display portion S1 in the organic film 16 by applying a forward voltage between the electrodes 14 and 17 with the anode 14 as a positive pole and the cathode 17 as a negative pole during actual driving. Light is emitted in the region, and light is extracted to the back surface 11b side of the substrate 11.

  The sealing cap 13 is for fixing the laminated body 12 by forming a space for housing the laminated body 12 between the substrate 11 and being fixed to the substrate 11, and is smaller than the substrate 11. A box-like shape having an opening on one side having the bottom of the area can be employed. In the present embodiment, a glass sealing cap 13 whose bottom is substantially rectangular in shape is employed, and is fixed to the surface 11 a of the substrate 11 via, for example, an ultraviolet curable adhesive member 18. Further, a moisture absorbing member 19 having a moisture absorbing action is attached to the inner surface of the bottom of the sealing cap 13.

  The circularly polarizing plate 30 is for improving the contrast ratio of display light of the organic EL panel 10, and includes a linearly polarizing plate and a birefringent plate (also referred to as a quarter wavelength plate). As shown in FIGS. 2 and 3, the birefringent plate side is disposed as an opposing surface 30a of the substrate 11 (hereinafter referred to as the front surface 30a), and the organic EL panel 10 is disposed on the back surface 11b side of the substrate 11. Has been.

  The reflecting member 31 is for reflecting external light in the same manner as the cathode 17, and is disposed on the surface 30 a of the circularly polarizing plate 30 and to the substrate 11 in the stacking direction. Further, as shown in FIG. 2, the reflecting member 31 is smaller than the outer peripheral portion 20 of the peripheral region S2 surrounding the segment display portion S1 with the cathode 17 and the insulating film 15 overlapping each other, and the opening of the insulating film 15 The first window portion 31a (the region surrounded by the one-dot chain line in FIG. 2) is larger than the portion 15a (segment display portion S1). That is, the opening end of the first window portion 31a in the vertical direction surrounds the opening end (segment display portion S1) of the opening portion 15a and is surrounded by the outer peripheral portion 20 of the surrounding region S2. Thereby, in the vertical direction, the cathode 17 and the insulating film 15 overlap each other, and the peripheral region S2 surrounding the segment display portion S1 and the region provided with the reflecting member 31 are partially overlapped and adjacent to each other. It has become. In the present embodiment, as shown in FIG. 2, the shape of the opening end of the first window portion 31a is a substantially rectangular shape corresponding to the outer peripheral portion 20 of the surrounding region S2.

  The color tone adjusting member 32 substantially matches the color tone of the reflected light by the reflecting member 31 with the color tone of the reflected light by the cathode 17 in the surrounding region S2 surrounding the segment display portion S1 that is the light emitting region and overlapping the insulating film 15. Is for. For this reason, as the color tone adjusting member 32, it is possible to employ a material whose transmitted color is substantially equal to the transmitted color of the insulating film 15. Further, corresponding to the arrangement region of the reflecting member 31, it is arranged between the front surface 30 a of the circularly polarizing plate 30 and the reflecting member 31 or on the back surface 30 b of the circularly polarizing plate 30. That is, the color tone adjusting member 32 has a second window portion 32 a (a region surrounded by a two-dot chain line in FIG. 2) corresponding to the reflecting member 31. In the present embodiment, as shown in FIG. 2, the shape of the opening end of the second window portion 32 a is also a substantially rectangular shape corresponding to the opening end of the first window portion 31 a, and the second window portion in the vertical direction. The opening end of 32a surrounds the opening end (segment display portion S1) of the opening 15a, and is surrounded by the opening end of the first window portion 31a. In this way, by adjusting the size (opening size) of the second window portion 32a to be smaller than the size of the first window portion 31a, the reflected light from the reflecting member 31 is adjusted in color tone even in the direction inclined with respect to the stacking direction. The member 32 is interposed.

  Here, in the present embodiment, the reflection member 31 and the color tone adjustment member 32 described above are laminated and integrated on the surface 30 a (the surface on the birefringent plate side) of the film-like circularly polarizing plate 30. Specifically, the same material (novolac resin) as the insulating film 15 is applied to the surface 30a of the circularly polarizing plate 30 by the screen printing method so as to have the second window 32a described above, and dried to adjust the color tone. 32. At this time, the thickness of the color tone adjustment member 32 was set to the same thickness as the thickness of the insulating film 15 (for example, 1 μm). Then, after the color tone adjustment member 32 is formed, the surface 30a of the circularly polarizing plate 30 is masked so as to have the first window portion 31a, and the same material (aluminum) as the cathode 17 is deposited by sputtering. The reflecting member 31 was used.

  The holding plate 50 has translucency, is disposed on the back surface 30 b of the circularly polarizing plate 30, protects the circularly polarizing plate 30 and the organic EL panel 10, and circularly polarizing plate 30 (and reflective) between the substrate 11. By sandwiching the member 31 and the color tone adjusting member 32), the flatness of the circularly polarizing plate 30 (and the reflecting member 31 and the color tone adjusting member 32) is ensured. As such a holding plate 50, light generated from the organic EL panel 10 is made of a plate-like glass or resin that is transparent (having light transmittance) so as to be transmitted to the outside through the circularly polarizing plate 30. A substrate can be employed. In the present embodiment, a glass substrate is employed as the holding plate 50. In addition, the circularly polarizing plate 30 described above is bonded and fixed to a facing surface 50a (hereinafter referred to as a front surface 50a) of the holding plate 50 facing the organic EL panel 10 with the back surface 30b as a facing surface. Thereby, the circularly polarizing plate 30 is protected and the flatness of the circularly polarizing plate 30 is ensured. Further, the back surface 11 b of the substrate 11 in the organic EL panel 10 is bonded and fixed to the front surface 30 a of the circularly polarizing plate 30 through the color tone adjusting member 32 and the reflecting member 31 that are integrally formed.

  Next, the effect of the characteristic part of the display device 100 according to the present embodiment will be described. 4A and 4B are plan views showing the color tone when the display device is viewed from the holding plate side. FIG. 4A shows this embodiment, and FIGS. 4B and 4C show comparative examples. In FIG. 4B, the display device is configured without the reflective member and the color tone adjustment member with respect to the display device of the present embodiment. In FIG. 4C, the display device is the display device of the present embodiment. On the other hand, there is no color tone adjusting member. Further, in FIGS. 4B and 4C, the reference numerals obtained by adding 100 are given to the same elements as the constituent elements of the display device shown in the present embodiment.

  First, in the present embodiment, the reflecting member 31 is smaller than the outer peripheral portion 20 (region surrounded by a broken line in FIG. 4A) of the surrounding region S2 in the organic EL panel 10 and the opening of the insulating film 15 is. It has the 1st window part 31a larger than the part 15a (segment display part S1). That is, the opening end of the first window portion 31a in the vertical direction (the chain line in FIG. 4A) surrounds the opening end of the opening portion 15a and the outer peripheral portion 20 of the surrounding region S2 (FIG. 4A). Surrounded by a broken line in the middle. Thereby, in the vertical direction, the surrounding area S2 surrounding the segment display portion S1 and the area provided with the reflecting member 31 are in a positional relationship adjacent to each other. Further, in correspondence with the arrangement region of the reflective member 31, the transmitted color is approximately the same as that of the insulating film 15 between the front surface 30 a of the circularly polarizing plate 30 and the reflective member 31 or on the back surface 30 b of the circularly polarizing plate 30. An adjustment member 32 is disposed. Then, as shown in FIG. 4A, the color tone adjusting member 32 changes the color of the reflected light through the color tone adjusting member 32 by the reflecting member 31 when ambient light is incident on the periphery of the organic EL panel 10. In the region S2, the color of light reflected by the cathode 17 through the insulating film 15 (dark blue) is substantially equal. That is, the color tone of the outer region (region outside the opening end of the first window portion 31a in FIG. 4A) surrounding the segment display portion S1 and the surrounding region S2 provided with the reflecting member 31 and the color tone adjusting member 32. Is substantially the same as the color tone of the surrounding area S2 of the organic EL panel 10 surrounded by the area.

  On the other hand, as shown in FIG. 4B, the color tone of the segment display part S101 and the surrounding area S102 is the same as that of the present embodiment shown in FIG. This is the same as the segment display section S1 (blue) and the surrounding area S2 (dark blue) of the display device 100. However, since light is hardly reflected in the outer area adjacent to the surrounding area S102, the color tone differs between the surrounding area S102 and the outer area as shown in FIG. 4B, and the boundary between the two areas is different. It will stand out. Further, as shown in FIG. 4C, in the case where the color tone adjusting member is not provided, the color tone of the segment display portion S101 and the surrounding region S102 (the region in the opening 131a of the reflecting member 131) is shown in FIG. This is the same as the segment display unit S1 and the surrounding region S2 of the display device 100 according to the present embodiment shown in FIG. However, since there is no color tone adjusting member in the outer region adjacent to the surrounding region S102, light is reflected by the reflecting member 131, but the color tone is almost the same as that of the segment display portion S101 (blue). Also in this case, as shown in FIG. 4C, the color tone is different between the surrounding area S102 and the outer area, and the boundary between the two areas becomes conspicuous. Further, the surrounding area S102 is smaller than the configuration shown in FIG.

  As described above, according to the display device 100 according to the present embodiment, in the vertical direction, the color tone of the surrounding region S102 adjacent to each other and the outer region thereof are substantially matched, and the appearance is improved with almost no boundary. it can. As a result, the two regions appear as if they are one color tone regions made up of one member. Therefore, the outer region where the reflection member 31 and the color tone adjustment member 32 are provided is part of the peripheral region S2 of the organic EL panel 10. (A part of the display surface of the display device 100). Therefore, the size of the organic EL panel 10 (substrate 11) can be reduced, the number of substrates obtained from the base material can be increased, and the manufacturing cost can be reduced.

  In the present embodiment, the reflecting member 31 is smaller than the outer peripheral portion 20 in the peripheral region S2 of the organic EL panel 10 and larger than the opening 15a (segment display portion S1) of the insulating film 15. 31a. In other words, the surrounding region S2 and the outer region where the reflecting member 31 and the color tone adjusting member 32 are provided have an annular overlapping region in the stacking direction. Therefore, even when a slight deviation occurs in the positional relationship between the organic EL panel 10 and the reflecting member 31 (in this embodiment, the circularly polarizing plate 30 provided with the reflecting member 31) in the vertical direction during assembly, the reflecting member 31 The position of the opening end of the first window portion 31a can be a position that overlaps with the portion corresponding to the peripheral region S2 of the cathode 17. That is, the adjacent state between the outer region where the reflecting member 31 and the color tone adjusting member 32 are provided and the surrounding region S2 of the organic EL panel 10 can be secured.

  In the present embodiment, the reflecting member 31 and the color tone adjusting member 32 are both integrally formed on the circularly polarizing plate 30. Therefore, by positioning the circularly polarizing plate 30 with respect to the organic EL panel 10, the positions of the reflecting member 31 and the color tone adjusting member 32 can also be determined with respect to the organic EL panel 10. Thereby, the positional accuracy of the reflecting member 31 and the color tone adjusting member 32 with respect to the organic EL panel 10 and the positional accuracy of the reflecting member 31 and the color tone adjusting member 32 can be improved.

  In the present embodiment, the color tone adjusting member 32 is made of the same constituent material as the insulating film 15 and has the same thickness as the insulating film 15. Therefore, the color tone of the outer region provided with the reflecting member 31 and the color tone adjusting member 32 can be made closer to the color tone of the surrounding region S2 of the organic EL panel 10 surrounded by the region.

  In the present embodiment, a translucent holding plate 50 that holds the circularly polarizing plate 30 is disposed on the back surface 30b of the circularly polarizing plate 30, and the circularly polarizing plate 30 is attached to the substrate 11 and the holding plate 50 in the assembled state. Is sandwiched between. Therefore, the circularly polarizing plate 30 and the organic EL panel 10 can be protected from scratches and the like by the holding plate 50 disposed on the light emitting side. In addition, the flatness of the film-like circularly polarizing plate 30 can be ensured by the sandwiching structure, the reflection surface of the reflection member 31 can be made uniform, and the appearance can be improved. In particular, in the present embodiment, since the circularly polarizing plate 30 is attached to the holding plate 50, the flatness can be improved.

  In the present embodiment, an example in which the reflection member 31 is formed by the sputtering method and the color tone adjustment member 32 is formed by the screen printing method with respect to the circularly polarizing plate 30 is shown. However, both may be formed using a screen printing method. According to this, since the same screen printing method is used, the manufacturing process can be simplified. When the reflective member 31 is formed by screen printing, glossy ink may be used. In the present embodiment, MIR-9100 Mirror Silver manufactured by Teikoku Ink Manufacturing Co., Ltd. is suitable.

  Further, in the present embodiment, an example in which the color tone adjusting member 32 is disposed on the surface 30a side of the circularly polarizing plate 30 is shown. However, as shown in FIG. 5, only the reflective member 31 may be disposed on the front surface 30a side of the circularly polarizing plate 30, and the color tone adjusting member 32 may be disposed on the back surface 30b side. FIG. 5 is a cross-sectional view showing a modification of the display device, and corresponds to FIG.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a plan view seen from the holding plate side showing a schematic configuration of the display device according to the present embodiment. FIG. 7 is a cross-sectional view of the display device shown in FIG.

  Since the display device according to the second embodiment is often in common with the display device according to the first embodiment, a detailed description of the common parts will be omitted, and different parts will be described mainly. In addition, the same code | symbol shall be provided to the element same as the element shown in 1st Embodiment.

  In the first embodiment, an example in which the display device 100 includes only one organic EL panel 10 has been described. However, the number of organic EL panels 10 is not particularly limited. As shown in FIG. 6, the display device 100 according to the present embodiment has two different types of organic EL panels 10a and 10b. The organic EL panel 10a displays segment information on air conditioners, and the organic EL panel 10b displays segment information on audio systems. Further, as shown in FIG. 7, the circularly polarizing plate 30 and the holding plate 50 are made common, and the reflecting member 31 corresponding to each organic EL panel 10a, 10b is integrated as one frame. More specifically, the reflecting member 31 is in the shape of a Japanese letter having two first window portions 31a. Then, each organic EL panel 10a, 10b is accommodated in a box-like case 70 with one surface opened, for example, made of resin, and the holding plate 50 is fixed to the end surface 70a of the case 70 on the back surface 30b, and the color tone on the surface 30a. A circularly polarizing plate 30 in which the adjusting member 32 and the reflecting member 31 are integrally formed is bonded and fixed with the surface 30a side as an opposing surface. The other configuration is the same as the configuration shown in the first embodiment.

  With such a configuration, the size of each of the organic EL panels 10a and 10b is reduced, but the range including the organic EL panels 10a and 10b and the reflective member 31 is provided as one large display surface. I can pretend to be. For example, when a vehicle navigation device is set as an option and the monitor of the device also displays information on air conditioners and audio, when the navigation device is not set, the entire arrangement area of the monitor or the like If it fills only with the organic electroluminescent panel which has the segment display part which displays the information of an audio | voice, an organic electroluminescent panel will enlarge and cost will increase. On the other hand, when the display device 100 having the above-described configuration is used, the organic EL panels 10a and 10b can be made smaller, and the manufacturing cost can be reduced.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a cross-sectional view illustrating a schematic configuration of the display device according to the present embodiment, and corresponds to FIG. 3 illustrated in the first embodiment.

  Since the display device according to the third embodiment is often in common with those according to the above-described embodiments, detailed description of common parts will be omitted, and different parts will be described mainly. In addition, the same code | symbol shall be provided to the element same as the element shown to said each embodiment.

  In the first embodiment, the color tone of the reflected light by the reflecting member 31 is substantially matched with the color tone of the reflected light by the cathode 17 in the surrounding region S2 surrounding the insulating film 15 surrounding the segment display portion S1 that is the light emitting region. Therefore, the example which has the color tone adjustment member 32 was shown. On the other hand, in the present embodiment, by adopting the reflection member 31 having a predetermined color tone, the color tone of the reflected light from the reflection member 31 is reflected by the cathode 17 in the surrounding region S2 without providing the color tone adjustment member 32. It is characterized in that it substantially matches the color tone.

  Specifically, colored glossy ink may be employed when the reflecting member 31 is formed by screen printing. In the case of this embodiment, MIR-9100 Gold manufactured by Teikoku Ink Manufacturing Co., Ltd. is suitable. According to this, the same reflected color as the reflected light of the cathode 17 made of aluminum through the novolac insulating film 15 was obtained.

  As described above, according to the display device 100 according to the present embodiment, since the reflecting member 31 has a predetermined color tone, the color tone adjusting member 32 can be omitted. Therefore, in addition to the effects of the above-described embodiment, the configuration of the display device 100 can be simplified. Further, since the formation of the color tone adjustment member 32 and the positioning of the color tone adjustment member 32 are not necessary, the manufacturing process can be simplified.

  Further, as shown in the above-described embodiment, in order to improve the appearance from the oblique direction, the color tone adjustment member 32 has a second window portion 32a smaller than the first window portion 31a of the reflection member 31. The color tone adjusting member 32 is extended in the first window 31a of the reflecting member 31. Accordingly, the reflected light from the cathode 17 that passes through the extended portion is transmitted to the outside through the insulating film 15 and the color tone adjusting member 32, and the reflected light from the cathode 17 through the insulating film 15. Or, the color tone is slightly different from the reflected light from the reflection member 31 via the color tone adjustment member 32. On the other hand, according to this embodiment, since the color adjustment member 32 is not provided and the reflective member 31 is colored, the appearance can be further improved.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  In the present embodiment, an example in which the reflecting member 31 and the color tone adjusting member 32 are integrally formed on the circularly polarizing plate 30 by a sputtering method or a screen printing method is shown. However, the reflecting member 31 and the color tone adjusting member 32 are configured as members different from the circularly polarizing plate 30, and the color tone adjusting member 32 is bonded and fixed to the surface 30 a of the circularly polarizing plate 30, for example, and the reflecting member 31 is attached to the color tone adjusting member 32. However, it is also possible to adopt a configuration in which, for example, adhesion is fixed.

  In the present embodiment, an example in which the display device 100 includes the holding plate 50 has been described, but a configuration without the holding plate 50 may be employed. Moreover, although the organic EL panel 10 showed the example which has the sealing cap 13, it is good also as a structure without the sealing cap 13. FIG.

It is the top view seen from the laminated body side which shows schematic structure of an organic electroluminescent panel among the display apparatuses which concern on 1st Embodiment. It is the top view seen from the organic EL panel side which shows schematic structure of a display apparatus. 3 is a cross-sectional view taken along line III-III in FIG. It is a top view which shows the color tone when a display apparatus is seen from the holding | maintenance board side, (a) is this embodiment, (b), (c) has shown the comparative example. It is sectional drawing which shows the modification of a display apparatus. It is the top view seen from the holding plate side which shows schematic structure of the display apparatus which concerns on 2nd Embodiment. It is sectional drawing of the display apparatus shown in FIG. It is sectional drawing which shows schematic structure of the display apparatus which concerns on 3rd Embodiment.

Explanation of symbols

10, 10a, 10b ... organic EL panel 11 ... substrate 14 ... anode 15 ... insulating film 15a ... opening 16 ... organic film 17 ... cathode 20 ... (ambient) Peripheral region 30 (region S2) ... Circularly polarizing plate 31 ... Reflective member 31a ... First window portion 32 ... Color tone adjusting member 32a ... Second window portion S1 ... Segment display portion S2 ... Ambient area

Claims (4)

The substrate has a laminate in which an anode, an insulating film having an opening on the anode, an organic film including a light emitting layer, and a cathode made of a metal material are laminated in this order, and corresponds to the opening of the laminate. The organic EL panel in which the part to be a segment display unit as a light emitting region,
A circularly polarizing plate arranged to cover the organic EL panel on the back side of the anode arrangement surface of the substrate, and a display device comprising:
On the surface of the circularly polarizing plate facing the substrate and between the substrate and the substrate, the cathode and the insulating film are smaller than the outer peripheral portion of the region surrounding the light emitting region, and the opening. A reflecting member having a window portion larger than the portion is disposed,
Corresponding to the arrangement region of the reflecting member, a transmission color is formed between the surface of the circularly polarizing plate facing the substrate and the reflecting member, or on the back surface of the circularly polarizing plate facing the substrate. Is arranged a color tone adjustment member substantially equal to the insulating film ,
The reflective member and the color tone adjusting member are both formed on the circularly polarizing plate,
The display device according to claim 1, wherein the color tone adjusting member is made of the same constituent material and the same thickness as the insulating film . The display device according to claim 1 , wherein the reflection member and the color tone adjustment member are both formed using a screen printing method. A plurality of the organic EL panels and one circularly polarizing plate;
The display device according to claim 1 , wherein the reflection member corresponding to each organic EL panel is integrated as one frame. A translucent holding plate that holds the circularly polarizing plate is disposed on the back surface of the circularly polarizing plate facing the substrate,
The display device according to claim 1 , wherein the circularly polarizing plate is sandwiched between the substrate and the holding plate.

Images