JP5067237B2 - Transparent display device - Google Patents

Description

  The present invention relates to a transparent display device.

  Conventionally, there is an EL (Electro Luminescence) display device as one of transparent display devices. In this case, the panel is configured as a transparent display portion formed of EL elements.

A panel used in an EL display device (hereinafter referred to as an EL panel) includes a first electrode, a first insulating film, a light emitting layer, a second insulating film, a second electrode, an adhesive, and a cover glass on a glass substrate. It has a laminated structure. In particular, it is known that an EL panel as a transparent display unit can be configured by forming the first electrode and the second electrode with transparent electrodes such as ITO (Indium Tin Oxide).
Japanese Patent No. 2848236

  As a structure of a transparent display device using an EL panel as described above, it is preferable that there is no frame at least on one side of the EL panel end because a feeling of openness can be obtained and the characteristics of the transparent display device can be utilized. However, an EL panel or the like has a phenomenon in which an end portion called end surface light emission emits light according to the content of display, and when the end portion is exposed, the end surface light emission is noticeable.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a transparent display device in which end face light emission can be made inconspicuous without providing a frame on at least one side.

  In order to achieve the above object, the transparent display device according to claim 1 is made of a transparent display, a frame member that covers a side surface excluding at least one side of the transparent display, and a transparent resin. A transparent display device comprising: a substantially flat plane portion to be installed; and a protective cover having a substantially flat side surface portion that covers a side surface of a transparent display that is provided at an end portion of the plane portion and is not covered with a frame member. The gap between the side of the transparent display and the side of the protective cover facing the side is equal to or less than the thickness of the transparent display, and the thickness of the side of the protective cover facing the side is equal to or greater than the thickness of the transparent display It is characterized by this.

  By doing so, when the transparent display device is viewed from the display surface side due to refraction at the surface of the protective cover that faces the side surface of the transparent display, the range in which the end surface of the transparent display can be seen is narrowed. Without providing a frame, end face light emission can be made inconspicuous.

  Moreover, since the strength is improved by covering the transparent display with a protective cover, it is effective for measures such as cracking of the transparent display.

  In addition, as shown in claim 2, the gap between the side surface of the transparent display and the side surface portion of the protective cover facing the side surface is wider on the back surface side of the display surface than on the display surface side of the transparent display. You may do it.

  By doing in this way, since the range which can see the end surface of a transparent display can be narrowed further, it is preferable.

  In order to provide such a gap, the side surface portion of the protective cover that faces the side surface of the transparent display is located between the display surface side of the transparent display and the back surface side of the display surface. You may make it incline toward the direction. Even if it does in this way, the effect that the range which can see the end face of a transparent display can be narrowed further can be produced.

  According to a fourth aspect of the present invention, the transparent display includes at least two transparent glasses sandwiching the light emitting layer, and a gap between the side surface of the two glasses and the side surface portion of the protective cover is a plane of the protective cover. You may make it the other glass direction become wider compared with the glass arrange | positioned at the part side. Even if it does in this way, the effect that the range which can see the end face of a transparent display can be narrowed further can be produced.

  In addition, as shown in claim 5, the transparent display, a frame member that covers a side surface excluding at least one side of the transparent display, and a substantially flat plane portion that is provided on the display surface of the transparent display, is made of a transparent resin. And a protective cover having a substantially flat side surface portion that covers the side surface of the transparent display that is provided at the end portion of the flat portion and is not covered by the frame member, the side surface of the transparent display and its side surface The gap between the side surface portion of the protective cover and the flat portion of the transparent cover is equal to or less than the length obtained by adding the plate thickness of the transparent display to the gap between the display surface of the transparent display and the flat portion of the protective cover.

  By doing so, when the transparent display is viewed from the display surface side due to refraction at the surface of the protective cover facing the side surface of the transparent display, the range in which the end surface of the transparent display can be seen is narrowed. Without providing, the end surface light emission can be made inconspicuous.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a schematic configuration of a transparent display device according to an embodiment of the present invention. FIG. 2 is a perspective view showing a schematic configuration of the transparent display according to the embodiment of the present invention. FIG. 3 is a perspective view showing a schematic configuration of the protective cover according to the embodiment of the present invention. FIG. 4 is a partial cross-sectional view of the transparent display device in the embodiment of the present invention. FIG. 5 is a partial cross-sectional view of the transparent display device in the embodiment of the present invention.

  As shown in FIG. 1 and the like, the transparent display device 100 according to the present embodiment includes a transparent display 10, a protective cover 20 made of a transparent resin, and frame members 31 to 33 made of opaque members.

  As shown in FIG. 2, the transparent display 10 is composed of a transparent member such as a display unit and electrodes. For example, an inorganic EL display, an organic EL display, or the like can be adopted. That is, in the transparent display 10, a structure or design on the back surface 16 (opposite surface of the display surface) side of the transparent display 10 from the display surface 15 side can be seen through the transparent display 10. Therefore, when an image or the like is displayed on the display area 151 of the transparent display 10, the structure or design on the back surface (opposite surface of the display surface) of the transparent display 10 is displayed together with the displayed image. You can see through. As a matter of course, the transparent display 10 allows the structure and design on the display surface 15 side of the transparent display 10 to be seen through the transparent display 10 from the back surface 16 side.

  Further, as shown in FIG. 4 and the like, the transparent display 10 has a structure in which at least the light emitting layer 111 is sandwiched between two glasses (a cover glass 112 and a glass substrate 113). The transparent display 10 also emits light from the side surfaces 11, 12, 13, and 14. This is because light from the light emitting layer 111 leaks from the side surfaces 11, 12, 13, and 14 when an image or the like is displayed on the display area 151 of the transparent display 10. For the detailed structure of the transparent display 10, refer to Japanese Patent Application Laid-Open No. 2005-115242.

  As shown in FIGS. 1 and 2, the protective cover 20 is made of a transparent resin, and includes a substantially flat display surface cover portion (planar portion) 21 installed on the display surface of the transparent display 10, and a display surface cover. A substantially flat end surface cover portion (side surface portion) 22 that covers the side surface (side surface 14) of the transparent display 10 that is provided at the end portion of the portion 21 and is not covered with the opaque frame members 31 to 33. In the protective cover 20, the display surface cover portion 21 and the end surface cover portion (side surface portion) 22 are substantially L-shaped. The protective cover 20 can be made of, for example, acrylic or polycarbonate. The range of the refractive index is, for example, about 1.4 to 1.7. Note that the display surface 15 of the transparent display 10 and the inner surface 211 of the display surface cover portion (planar portion) 21 of the protective cover 20 are substantially parallel.

  Therefore, in the transparent display device 100, the structure or design on the side of the back surface 16 (opposite surface of the display surface) of the transparent display 10 from the viewing surface 110 side facing the display surface 15 of the transparent display 10 is transparent display device 100 (transparent It can be seen through the display 10 and the protective cover 20). Naturally, in the transparent display device 100, the structure and design on the viewing surface 110 side from the back surface side (back surface 16 side) can be seen through the transparent display device 100 (transparent display 10 and protective cover 20).

  The frame members 31 to 33 are provided in order to hide the terminals and drivers of the transparent electrodes arranged in the end region of the transparent display 10. That is, since the electrodes of the transparent display 10 are taken out, the three sides are hidden by the opaque member. The frame members 31 to 33 are arranged so as to cover only the three side surfaces 11, 12, and 13 of the transparent display 10. As described above, when the frame member is not disposed on at least one side (side surface 14) of the transparent display 10 (arranged so as to cover at least the side surface excluding one side), a feeling of openness can be obtained and the characteristics of the transparent display device 100 can be utilized. Therefore, it is preferable.

  However, light (end surface light emission) from the side surfaces 11 to 14 of the transparent display 10 is shielded by the frame members 31 to 33 on the side surfaces 11 to 13 on which the frame members 31 to 33 are disposed, but the side surface on which the frame members are not disposed. 14 is not shielded from light. Therefore, if a frame member is not disposed on at least one side of the transparent display 10, a feeling of opening is obtained, but light is emitted from at least one side (side surface 14) of the transparent display 10. That is, when an image or the like is displayed in the display area 151, light other than light such as an image displayed in the display area 151 is emitted from the side surface 14 (other than the display area 151) of the transparent display 10. This may give an uncomfortable feeling to the user who is watching the transparent display device 100.

  Therefore, as shown in FIGS. 4 and 5, the transparent display device 100 according to the present embodiment includes the side surface 14 of the transparent display 10 and the inner surface of the end cover portion (side surface portion) 22 of the protective cover 20 that faces the side surface 14. The thickness B of the end cover portion (side surface portion) 22 of the protective cover 20 facing the side surface 14 is equal to or greater than the thickness A of the transparent display 10.

  Further, the gap B between the side surface 14 of the transparent display 10 and the inner surface 211 of the end surface cover portion 22 of the protective cover 20 facing the side surface 14 is between the display surface 15 of the transparent display 10 and the display surface cover portion 21 of the protective cover 20. It may be equal to or shorter than the length obtained by adding the plate thickness A of the transparent display 10 to the gap E with the inner side surface 211.

  Here, the side surface 14 of the transparent display device 100 of the present embodiment configured to satisfy the above-described relationship shown in FIG. 5 and the transparent display device (comparative example) when the protective cover shown in FIG. 8 is not provided. Compare the visible range. 5 and 8, the range in which the side surface 14 of the transparent display 10 can be seen from the viewing surface 110 side of the transparent display device 100 is the example of this embodiment shown in FIG. 5 compared to the range F ′ of the comparative example shown in FIG. 8. It can be seen that the range F of the transparent display device 100 is narrower (in FIGS. 5 and 8, the angle with the viewing surface 100 of the transparent display device 100 as viewed from the user is common). That is, since the visible range is narrow, light emission from the side surface 14 (edge light emission) becomes inconspicuous.

  This utilizes the fact that the angle between the surface on which the line of sight of the protective cover 20 enters and the surface on which the line of sight emerges is a right angle or less, and is not effective in the following cases. When the gap B between the side surface 14 of the transparent display 10 and the inner surface 211 of the end cover portion (side surface portion) 22 of the protective cover 20 facing the side surface 14 is wider than the plate thickness A of the transparent display 10, the line of sight is the protective cover 20. Since the side surface 14 of the transparent display 10 is viewed from the front side, and the angles are parallel, there is no effect. Even when the thickness C of the end cover portion (side surface portion) 22 of the protective cover 20 facing the side surface 14 is smaller than the plate thickness A of the transparent display 10, the incident surface and the exit surface are parallel to each other, which is not effective.

  That is, the relationship between the incident angle and the exit angle of the light emitted from the side surface 14 with respect to the protective cover 20 is the same for the display surface cover portion 21 and the end surface cover portion 22. However, the display surface cover portion 21 and the end surface cover portion 22 formed at a predetermined angle (substantially a right angle in the present embodiment) with the corner portion D as a boundary have different incident angles of light emitted from the side surface 14. is there. Therefore, when the transparent display device 100 satisfies the relationship as described above, the light emitted from the side surface 14 of the transparent display 10 is viewed from the corner D of the display surface cover portion 21 and the end surface cover portion 22 as a boundary. The amount of light traveling to the side is less than the amount of light traveling to the end face side of the protective cover 20.

  In this way, when the transparent display device 100 is viewed from the display surface 15 side (viewing surface 110 side) due to refraction at the surface of the protective cover 20 facing the side surface 14 of the transparent display 10, Since the range in which the end face can be seen becomes narrow, the end face light emission of the display 10 can be made inconspicuous without providing a frame on at least one side.

  Further, the gap B between the side surface 14 of the transparent display 10 and the inner surface 211 of the end cover portion 22 of the protective cover 20 that faces the side surface 14 is compared with the display surface 15 side of the transparent display 10 (upper side of the drawing, such as FIG. 6). It is preferable that the back surface 16 side of the display surface 15 (the lower side in FIG. 6) is wider. By doing in this way, since the range which can see the end surface of the transparent display 10 from the visual recognition side of the transparent display apparatus 100 can be narrowed further, it is preferable.

  Further, in order to provide such a gap, the end cover portion 22 of the protective cover 20 facing the side surface 14 of the transparent display 10 is displayed on the transparent display 10 as in Modification 1 shown in FIG. You may make it incline toward the back surface 16 side of the display surface 15 from the surface 15 side. That is, the protective cover 20 is formed such that the angle formed by the display surface cover portion 21 (the inner side surface 211) and the end surface cover portion 22 (the inner side surface 221) is greater than 90 degrees. By doing in this way, since the range which can see the end surface of the transparent display 10 from the visual recognition side of the transparent display apparatus 100 can be narrowed further, it is preferable.

  Further, in order to have a gap of the relationship as described above, a gap between the side surface 141 of the cover glass 112 and the inner side surface 211 of the end surface cover portion 22 of the protective cover 20 is provided as in Modification 2 shown in FIG. In comparison, the gap between the side surface 142 of the glass substrate 113 and the inner surface 211 of the end surface cover portion 22 of the protective cover 20 is made wider. This is also preferable because the range in which the end surface of the transparent display 10 can be seen from the viewing surface side of the transparent display device 100 can be further narrowed.

  Further, such an effect is obtained when the user tries to view the display surface 15 from a position outside the side surface 14, that is, the user's viewpoint is "outside the side surface 14" and "outside the display surface cover portion". This is noticeable when it exists in the region.

It is a perspective view which shows schematic structure of the transparent display apparatus in embodiment of this invention. It is a perspective view which shows schematic structure of the EL display part in embodiment of this invention. It is a perspective view which shows schematic structure of the cover member in embodiment of this invention. It is a fragmentary sectional view of the transparent display apparatus in embodiment of this invention. It is a fragmentary sectional view of the transparent display apparatus in embodiment of this invention. It is a fragmentary sectional view of the transparent display apparatus in the modification 1 of this invention. It is a fragmentary sectional view of the transparent display apparatus in the modification 2 of this invention. It is a fragmentary sectional view of the transparent display apparatus in a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Transparent display 11, 12, 13, 14 Side surface, 15 display surface, 151 display area, 16 back surface, 111 light emitting layer, 112 cover glass, 113 glass substrate, 20 protective cover, 21 display surface cover part (plane part), 211 inner side surface, 22 end surface cover part (side surface part), 221 inner side surface, 31-33 frame member, 100 transparent display device

Claims (5)

A transparent display,
A frame member covering a side surface excluding at least one side of the transparent display;
A substantially flat plane portion that is made of a transparent resin and is provided on the display surface of the transparent display, and a surface that covers a side surface of the transparent display that is provided at an end of the plane portion and is not covered by the frame member. A protective cover having a flat side surface;
A transparent display device comprising:
The gap between the side surface of the transparent display and the side surface portion of the protective cover facing the side surface is equal to or less than the plate thickness of the transparent display, and the thickness of the side surface portion of the protective cover facing the side surface is the thickness of the transparent display. A transparent display device characterized by having a plate thickness or more.   The gap between the side surface of the transparent display and the side surface portion of the protective cover facing the side surface is wider on the back surface side of the display surface than the display surface side of the transparent display. The transparent display device according to claim 1.   The side surface portion of the protective cover facing the side surface of the transparent display is inclined from the display surface side of the transparent display toward the back surface side of the display surface. Transparent display device.   The transparent display has at least two transparent glasses sandwiching a light emitting layer, and a gap between a side surface of the two glasses and a side surface portion of the protective cover is disposed on the flat surface portion side of the protective cover. The transparent display device according to claim 2, wherein the other glass is wider than the other glass. A transparent display,
A frame member covering a side surface excluding at least one side of the transparent display;
A substantially flat plane portion that is made of a transparent resin and is provided on the display surface of the transparent display, and a surface that covers a side surface of the transparent display that is provided at an end of the plane portion and is not covered by the frame member. A protective cover having a flat side surface;
A transparent display device comprising:
The gap between the side surface of the transparent display and the side surface portion of the protective cover facing the side surface is a length obtained by adding the plate thickness of the transparent display to the gap between the display surface of the transparent display and the flat portion of the protective cover. The transparent display device according to claim 1, wherein:

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