JP2010217581A - Display device and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device that can be used for new stereoscopic video display. <P>SOLUTION: The stereoscopic video display device 10 includes a glass substrate 11 and a plurality of organic EL elements 1 having light emitting layer 15 disposed on the glass substrate 11. The plurality of the organic EL elements 1 comprise one or more elements 1R for the right eye for displaying an image for the right eye, and one or more elements 1L for the left eye for displaying an image for the left eye. The light emitting surface of the light emitting layer 15 includes an inclination to the glass substrate 11 in at least part of the one or more elements 1R for the right eye and at least part of the one or more elements 1L for the left eye so that a principal component of the emission light of each of the elements 1R for the right eye travels to an observer's right eye 2R, and a principal component of the emission light of each of the elements 1L for the left eye travels to the observer's left eye 2L. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device and a manufacturing method thereof, and more particularly to a display device and a manufacturing method thereof that allow a plurality of objects to recognize different images.

  As a method for displaying a 3D image, there is a conventional method for displaying without using dedicated glasses. This is a technique in which the left and right eyes recognize different images to make the images appear three-dimensional. As its representative method, a parallax barrier method and a lenticular method are known (see, for example, Patent Document 1).

  FIG. 13 is a diagram illustrating the principle of stereoscopic video display by the parallax barrier method. The video parallax barrier method alternately displays a stripe-shaped right-eye image 101R and a left-eye image 101L, and uses a fine stripe-shaped light-shielding slit 103 called a barrier stripe to change the right-eye image 101R to the right eye 102R and the left-eye image. In this method, the image 101L reaches the left eye 102L. FIG. 14 is a diagram showing the principle of stereoscopic video display by the lenticular method. The lenticular method uses a lenticular 104 in which a large number of small lenses are incorporated to control the light traveling direction so that the right eye image 101R reaches the right eye 102R and the left eye image 101L reaches the left eye 102L. It is.

JP 2005-91834 A (published April 7, 2005)

  However, the conventional techniques have the following problems.

  In the parallax barrier system, light from the panel is blocked by the light-shielding slit 103, and thus there is a problem that the aperture ratio is lowered and the panel luminance is lowered. Further, the light shielding slit 103 itself becomes an obstacle. In the lenticular method, the panel brightness does not decrease, but since the light is collected by the lens, the image is distorted.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a display device that can be used for new stereoscopic video display.

  In order to solve the above problems, a display device according to the present invention includes a substrate and a plurality of light-emitting elements formed on the substrate and having a light-emitting layer, and can be different from each other. And the second target image, wherein the plurality of light emitting elements display one or more first light emitting elements for displaying the first target image and a second target image. One or more of the plurality of first light emitting elements, the main component of the emitted light of each of the plurality of first light emitting elements proceeds to the first target, and the main component of the emitted light of each of the plurality of second light emitting elements is the first. The light emitting surface of the light emitting layer is formed on the substrate in at least one part of the one or more first light emitting elements and at least one part of the one or more second light emitting elements so as to proceed to a second object different from the one object. It is the structure which has inclination with respect to it.

  According to the above configuration, the display device has, on the substrate, one or more first light emitting elements for displaying the first target image, and one or more second light emitting elements for displaying the second target image. have. In at least some of the first light emitting elements, the light emitting layer is inclined with respect to the substrate so that the main component of the light emitted from each first light emitting element proceeds to the first target. Thereby, each of the main components of the emitted light from the first light emitting element travels toward the first target. Similarly, in at least some of the second light emitting elements, the light emitting layer is inclined with respect to the substrate so that the main component of the light emitted from each second light emitting element proceeds to a second target different from the first target. ing. Thereby, each of the main components of the emitted light from the second light emitting element travels toward the second target. Therefore, the first target image can be displayed on the first target, the second target image can be displayed on the second target, and different images can be displayed on the first target and the second target. It becomes possible.

  For example, when the first object and the second object are the observer's right eye and left eye, respectively, different images can be shown for the right eye and the left eye, so that it can function as a stereoscopic image display device. Further, for example, when the first object and the second object are a plurality of viewers viewing from different positions, it can function as a so-called dual view display device that displays different images to each viewer.

  In the display device according to the present invention, the light emitting layer is sandwiched between the first electrode and the second electrode, and one of the first electrode and the second electrode is a reflective electrode, and the other is a half electrode. It is a transmissive reflective electrode, and the light-emitting element preferably has a microcavity structure.

  According to the above configuration, the light emitted from the light emitting layer is repeatedly reflected between the first electrode and the second electrode, and the light strengthened by resonance is emitted from the transflective electrode side. At this time, directivity occurs in the emitted light. Therefore, more light from the first light-emitting element is directed to the first object, less light from the first light-emitting element toward the second object, and more light from the second light-emitting element is also given to the first object. Light from the second light emitting element that is directed toward the two objects and directed toward the first object can be reduced. Thereby, different images can be favorably shown on the first object and the second object, respectively.

  It is preferable that the inclination increases as the position of the light emitting element in the display panel configured to include the plurality of light emitting elements moves from the center to the end of the display panel.

  According to the above configuration, it is possible to display a favorable stereoscopic image for an observer who observes from the front center of the display panel.

  In the display device according to the present invention, the inclination is preferably greater than 0 ° and not greater than 17 °.

  According to the above configuration, regardless of the size of the display panel, it is possible to display a favorable stereoscopic image for an observer located at the optimal viewing distance of the display panel.

  In the display device according to the present invention, the light emitting layer of the first light emitting element is inclined at an angle θ with respect to the light emitting layer of the second light emitting element provided adjacent to the first light emitting element. The angle θ is preferably 90 ° or more and less than 180 °.

  According to the above configuration, it is possible to prevent light from the emission surface of the first light emitting element from being blocked by the emission surface of the adjacent second light emitting element. The reverse is also true. Thereby, the light from each light emitting element can reach each object more reliably.

  Moreover, the display apparatus which concerns on this invention WHEREIN: It is preferable that the said light emitting element is an organic electroluminescent element whose said light emitting layer is an organic electroluminescent layer.

  According to the above configuration, a display device having high luminance and excellent display characteristics can be realized.

  Moreover, the display device according to the present invention has a barrier element having a light-transmitting part that transmits only light traveling in a specific direction and a light-shielding part that blocks light traveling in the other direction on the front surface of the light-emitting element. Is preferably disposed.

  According to the above configuration, only the light traveling from the first light emitting element to the first target can be transmitted from the barrier element, and the light traveling to the second target can be shielded. The reverse is also true. Therefore, the first object image can be shown more specifically to the first object, and the second object image can be shown more specifically to the second object. Therefore, different images can be shown better for each of the first object and the second object.

  In the display device according to the present invention, it is preferable that a spherical lens for condensing the emitted light from each light emitting element is disposed on the front surface of the light emitting element.

  According to the said structure, more emitted light from a 1st light emitting element can be advanced to a 1st object, and the light which goes to a 2nd object can be decreased. The reverse is also true. Therefore, different images can be shown better for each of the first object and the second object.

  In order to solve the above problems, a method for manufacturing a display device according to the present invention provides a plurality of light emitting elements formed by providing a wiring, an interlayer insulating film, a first electrode, a light emitting layer, and a second electrode in this order on a substrate. A method for manufacturing a display device including an element, the method including a step of providing an inclination on a surface of the interlayer insulating film or the first electrode opposite to the substrate.

  According to the above configuration, when the light emitting element is formed, the surface of the interlayer insulating film on the side opposite to the substrate can be inclined with respect to the substrate. Accordingly, the first electrode and the light emitting layer formed on the interlayer insulating film are also inclined with respect to the substrate, and as a result, the light emitting surface of the light emitting layer can be inclined with respect to the substrate. Similarly, instead of the interlayer insulating film, the side of the first electrode opposite to the substrate can be inclined with respect to the substrate. In this case, the light emitting layer formed on the first electrode is inclined with respect to the substrate. As a result, the light emitting surface of the light emitting layer can be tilted with respect to the substrate. Therefore, the direction of the emitted light from the pixel having each light emitting element can be controlled by adjusting the inclination angle of each light emitting layer.

  In the method for manufacturing a display device according to the present invention, after the interlayer insulating film or the first electrode is formed, the interlayer insulating film or the first electrode is formed using a pressure member having an inclined pattern formed on the surface. It is preferable to provide the above inclination by pressurizing.

  In the display device manufacturing method according to the present invention, after the interlayer insulating film or the first electrode is formed, the inclination is provided by performing a rubbing process on the interlayer insulating film or the first electrode. It is preferable.

  According to these configurations, the surface of the interlayer insulating film or the first electrode can be easily inclined.

  In the method for manufacturing a display device according to the present invention, when the interlayer insulating film or the first electrode is formed, the evaporation surface of the deposition material holder that holds the material of the interlayer insulating film or the first electrode is formed. Preferably, the interlayer insulating film or the first electrode is formed by inclining the substrate with respect to the substrate and depositing the material.

  According to these configurations, the surface of the interlayer insulating film or the first electrode can be easily inclined without increasing the number of manufacturing steps.

  As described above, in the display device according to the present invention, the light emitting surface of the light emitting layer in at least some of the light emitting elements is inclined with respect to the substrate, and the main component of the emitted light from the first light emitting element is the first target. The main component of the emitted light from the second light emitting element is configured to proceed to the second target. Therefore, when displaying a plurality of images, the first target image can be shown to the first target and the second target image can be shown to the second target.

It is a fragmentary sectional view showing the composition in one embodiment of the display of the present invention. It is a figure explaining extraction of light using a microcavity effect. It is a figure showing the characteristic of the light obtained by the microcavity effect. It is a figure which shows the viewing angle characteristic of the light obtained by the microcavity effect. 2A and 2B are partial cross-sectional views illustrating the structure of the display device of the present invention, in which FIG. 1A is a display device having a top emission structure, and FIG. 2B is a display device having a bottom emission structure. It is a figure which shows the principle of the stereoscopic video display using the display apparatus of this invention. It is a figure which shows the relationship between the angle of a light emitting layer, and the position in a display panel. It is a figure which shows the principle of the stereoscopic video display in another embodiment of this invention. It is a figure showing one Embodiment of the inclination formation method in the manufacturing method of this invention. It is a figure showing another embodiment of the inclination formation method in the manufacturing method of this invention. It is a figure showing another embodiment of the inclination formation method in the manufacturing method of this invention. It is a figure which shows the inclination of the adjacent light-projection surface in a dual view display apparatus. It is a figure showing the principle of the stereoscopic image display of the conventional parallax barrier system. It is a figure showing the principle of the stereoscopic image display of the conventional lenticular system.

[Embodiment 1]
(Configuration of stereoscopic video display device)
An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, a stereoscopic video display device that can view a three-dimensional image without using special glasses will be described.

  First, the configuration of a stereoscopic video display device (display device) will be described with reference to FIG. FIG. 1 is a schematic cross-sectional view showing a part of the configuration of the stereoscopic video display device 10. As shown in FIG. 1, in the stereoscopic image display device 10, an organic electroluminescence (EL) element (light emitting element) 1 is formed on a glass substrate 11, and a sealing substrate 19 and a circularly polarizing plate 20 are further formed. ing. The organic EL element 1 is provided on the wiring 12 of the TFT circuit, the interlayer insulating film 13 covering the wiring 12, the anode (first electrode) 14 formed on the interlayer insulating film 13, and the anode (second electrode) 14. A light emitting layer 15 containing an organic light emitting material and a cathode 16 provided on the light emitting layer 15 are included, and further covered with an inorganic sealing film 17 and a resin sealing film 18. Although not shown in FIG. 1, a plurality of organic EL elements 1 are formed on the glass substrate 11. The light emitting layer 15 is an organic EL layer.

  As shown in FIG. 1, the surface of the anode 14 on the light emitting layer 15 side is inclined with respect to the glass substrate 11. Thus, the entire light emitting layer 15 is provided to be inclined with respect to the glass substrate 11. Therefore, among the light emitted from the light emitting layer 15, the light 30 emitted in the normal direction of the light emitting surface of the light emitting layer 15 is inclined with respect to the normal direction of the glass substrate 11. Since each film formed on the light emitting layer 15 is also inclined, the light 30 emitted from the organic EL element 1 is also inclined with respect to the normal direction of the glass substrate 11. Note that “the inclination of the light emitting layer”, “the inclination of the light emitting surface”, and “the inclination of the light emitting surface” can be used interchangeably in this specification as expressing the same meaning. As will be described later, the light emitted from the organic EL element 1 has a main component of light in the normal direction of the emission surface of the organic EL element 1. Therefore, the light 30 emitted in the normal direction of the light emitting surface of the light emitting layer 15 becomes the main component of the light from the organic EL element 1, and the luminance is highest in that direction. The inclination of the light emitting layer 15 may vary depending on the position where the organic EL element 1 is provided on the glass substrate 11.

  For convenience, the organic EL element 1 is divided into a right-eye element 1R for displaying a right-eye image (first target image) and a left-eye element 1L for displaying a left-eye image (second target image). It is done. The right-eye element 1R and the left-eye element 1L have the same configuration except that the inclination of the light emitting layer 15 is different from each other.

  The anode 14 is formed using a transparent electrode such as ITO and Al. On the other hand, the cathode 16 is formed using Al and Ag. For this reason, the anode 14 functions as a reflective electrode, and the cathode 16 functions as a semi-reflective electrode (semi-transmissive reflective electrode). Therefore, the light emitted by the light emission 23 from the light emitting layer 15 between the anode 14 and the cathode 16 is repeatedly reflected between the anode 14 as a reflective electrode and the cathode 16 as a semi-reflective electrode. The organic EL element 1 has a microcavity structure. Therefore, by using the microcavity effect, it is possible to increase the intensity of the specific wavelength and to give the emitted light directivity.

  Here, the emitted light from the light emitting element extracted using the microcavity effect will be described with reference to FIGS.

  FIG. 2 is a diagram for explaining the resonance of light between electrodes. Light emitted by the light emission 23 from the light emitting layer 25 between the reflective electrode 22 and the semi-reflective electrode 21 is repeatedly reflected between the reflective electrode 22 and the semi-reflective electrode 21. At this time, by adjusting the distance between the reflective electrode 22 and the semi-reflective electrode 21, the light with the wavelength having the same optical path length enhances the light intensity by resonance, and only the light 31 with the same wavelength from the semi-reflective electrode 21 side. Exit. On the other hand, the intensity of the light 32 having a wavelength shifted from the other optical path lengths is weakened.

  FIG. 3 shows a result of comparing the characteristics of emitted light when a reflective electrode is used as the lower electrode and a semi-reflective electrode is used as the upper electrode, and when a reflective electrode is used as the lower electrode and a transparent electrode is used as the upper electrode. FIG. As shown in FIG. 3, compared to the case of using a reflective electrode and a transparent electrode, when the reflective electrode and the semi-reflective electrode are used, the intensity of light of a specific wavelength is increased due to the microcavity effect. I understand.

  FIG. 4 is a diagram showing the difference in viewing angle characteristics depending on the presence or absence of the microcavity effect. When the microcavity effect is not used, the emitted light has a substantially constant luminance between 0 ° and 50 °. On the other hand, when the microcavity effect is used, the emitted light has a peak luminance at 0 °. That is, the light in the normal direction of the emission surface of the light emitting element becomes the main component of the light emitted from the light emitting element. That is, the viewing angle characteristic varies depending on the presence or absence of the microcavity, and the emitted light has directivity. As described above, the light extracted to the outside has the highest front luminance and high color purity.

  Up to this point, the top emission (TE) structure in which light is emitted from the side opposite to the glass substrate 11 has been described as the structure of the organic EL element 1, but the bottom emission (BE) structure in which light is emitted from the glass substrate 11 side. It is also possible to use.

  FIG. 5A shows the emission of light when the TE structure is adopted, and FIG. 5B shows the emission of light when the BE structure is adopted. For convenience of explanation, the description of some members is omitted. In the organic EL element 1 having a TE structure as shown in FIG. 5A, the anode 14 is the reflective electrode 22, the cathode 16 is the semi-reflective electrode 21, and light is emitted from the cathode 16 side. On the other hand, in the organic EL element 1 having the BE structure, the cathode 16 is the reflective electrode 22, the anode 14 is the semi-reflective electrode 21, and light is emitted from the anode 14 side. Even in this case, the microcavity effect works and high-intensity light having directivity can be extracted. Further, the emitted light 30 is emitted obliquely from the glass substrate 11.

(Principles of stereoscopic video display)
Next, the principle of stereoscopic video display by the stereoscopic video display device 10 will be described with reference to FIG.

  In the stereoscopic video display device 10, a right-eye display unit that displays a right-eye image and a left-eye display unit that displays a left-eye image are alternately and repeatedly arranged. The right-eye display section is provided with a right-eye element 1R, and the left-eye display section is provided with a left-eye element 1L. In FIG. 6, only the light emission surface of each element is shown for convenience of explanation. Moreover, although the figure provided with the element 1R for right eyes and the element 1R for left eyes alternately provided one each is shown, in each display part, the organic EL element 1 for right eyes or left eyes is arranged in multiple numbers. It may be provided.

  The exit surface of each of the right-eye elements 1R is formed to be inclined in the direction facing the observer's right eye (first object) 2R, and the exit surface of each of the left-eye elements 1L is the observer's left eye (second object). ) Inclined in the direction facing 2L. That is, the right-eye element 1R is formed such that outgoing light perpendicular to the outgoing surface travels to the observer's right eye 2R. Similarly, the left-eye element 1L is formed such that outgoing light perpendicular to the outgoing surface travels to the left eye 2L of the observer. As described above, in the organic EL element 1, light in a direction perpendicular to the emission surface of the element is the main component of the emission light. Therefore, the main component of the emitted light from the right-eye element 1R advances to the observer's right eye 2R, and the main component of the emitted light from the left-eye element 1L advances to the observer's left eye 2L. Therefore, the right eye 2R mainly recognizes the right eye image formed by the light emitted from the right eye element 1R, while the left eye 2L mainly recognizes the left eye image formed by the light emitted from the left eye element 1L. You will recognize. Therefore, the right eye 2R and the left eye 2L see different images, and appreciate a three-dimensional image. Therefore, 3D image display can be performed without using special glasses.

  Next, the inclination of the light emitting layer 15 of the organic EL element 1 will be described with reference to FIG.

  In the present embodiment, it is assumed that the observer views an image from substantially the center front of the display panel of the stereoscopic video display device 10. Therefore, the light emitting layer 15 is not inclined at the center of the display panel, or the inclination angle is slight. As the arrangement position of the organic EL element 1 approaches the end from the center of the display panel (in the direction of the arrow in the figure), the inclination angle of the light emitting layer 15 increases, and the inclination angle becomes maximum at the end. Specifically, when the size of the display panel is 32 type (horizontal width 69.8 cm), the inclination angle of the light emitting layer 15 in the right-eye element 1R at the right end of the display panel is 15 ° toward the inside. The angle of inclination of the light emitting layer 15 in the right-eye element 1R at the left end of the display panel is preferably 17 ° toward the inside. In this case, when the observer is positioned at the center of the front of the panel and viewed with the right eye from a distance of 120 cm, which is the optimum viewing distance of the 32-inch display panel, the emitted light perpendicular to the emission surface of each right-eye element 1R is emitted. The right eye 2R will be reached. That is, the main component of the emitted light from each right-eye element 1R reaches the right eye 2R. On the other hand, in the left eye element 1L, the inclination angle of the light emitting layer in the left eye element 1L at the right end of the panel is 17 ° inward, and the inclination angle of the light emitting layer in the left eye element 1L at the left end of the panel is inward. Is preferably 15 °. In this case, the main component of the emitted light from each left-eye element 1L reaches the left eye 2L.

  When the size of the display panel is 20 type (horizontal width 44.4 cm), the inclination angle of the light emitting layer 15 in the right-eye element 1R at the right end of the display panel is preferably 14 ° toward the inside. The inclination angle of the light emitting layer 15 in the right-eye element 1R at the left end of the display panel is preferably 17 ° toward the inside. In this case, when the observer is located in the center of the front of the panel and viewed with the right eye from the distance of 80 cm which is the optimum viewing distance of the 20-inch display panel, the emitted light perpendicular to the emission surface of each right-eye element 1R is emitted. The right eye 2R will be reached. On the other hand, in the left eye element 1L, the inclination angle of the light emitting layer in the left eye element 1L at the right end of the panel is 17 ° inward, and the inclination angle of the light emitting layer in the left eye element 1L at the left end of the panel is inward. 14 ° is preferable.

  When the size of the display panel is 52 type (horizontal width 115.2 cm), the inclination angle of the light emitting layer 15 in the right-eye element 1R at the right end of the display panel is preferably 16 ° toward the inside. The inclination angle of the light emitting layer 15 in the right-eye element 1R at the left end of the display panel is preferably 17 ° toward the inside. In this case, when the observer is positioned in the center of the front of the panel and viewed with the right eye from a distance of 190 cm, which is the optimum viewing distance of the 52-inch display panel, the emitted light perpendicular to the emission surface of each right-eye element 1R is emitted. The right eye 2R will be reached. On the other hand, in the left eye element 1L, the inclination angle of the light emitting layer in the left eye element 1L at the right end of the panel is 17 ° inward, and the inclination angle of the light emitting layer in the left eye element 1L at the left end of the panel is inward. Is preferably 16 °.

  FIG. 8 is a diagram illustrating another embodiment of the stereoscopic video display device 10. As shown in FIG. 8, a parallax barrier (barrier element) 3 may be introduced auxiliary to the front surface of the organic EL element 1. The parallax barrier 3 is a slit-like member having a light-transmitting part that transmits only light traveling in a specific direction and a light-shielding part that blocks light traveling in the other direction. Thereby, light other than the main component among the light emitted from the right-eye element 1R can be shielded. This can more reliably prevent the light of the right eye image from traveling to the left eye 2L. The reverse is also true.

  As still another embodiment of the stereoscopic image display device 10, a spherical lens for condensing the emitted light from each organic EL element 1 may be disposed on the front surface of the organic EL element 1.

(Method for manufacturing stereoscopic image display device)
A method for manufacturing a stereoscopic image display device will be described below with reference to FIGS. 1 and 9 to 11.

  First, a TFT is produced on the glass substrate 11, and an interlayer insulating film 13 is formed thereon. A conventionally known method may be used as a method for manufacturing a TFT on the glass substrate 11. Next, an Al film having a thickness of 100 nm is formed as the anode 14. After laminating ITO having a thickness of 10 nm as a transparent electrode (not shown), a patterned metal is pressed by a method described later, and heat at 150 ° C. is applied to form an oblique pattern on the ITO. Thereafter, the light emitting layer 15 is formed by vacuum deposition. As a result, the light emitting layer 15 is formed to have an inclination in accordance with the inclination of the anode 14. A 1 nm thick LiF film is formed on the light emitting layer 15 as an electron injection layer (not shown), and a 2 nm thick Al film and a 20 nm thick Ag film are formed as the cathode 16. Next, an SiN film having a thickness of 1 μm and a polyimide film having a thickness of 10 μm are formed in this order as the inorganic sealing film 17 by PECVD (plasma-enhanced chemical vapor deposition). Finally, the circularly polarizing plate 20 is formed by sealing with the sealing substrate 19. As described above, all the films after the anode 14 are tilted. As a result, light emitted in the vertical direction from the cathode 16 side of the light emitting layer 15 can be extracted in an oblique direction with respect to the glass substrate 11. Moreover, the anode 14 becomes a reflective electrode, and the cathode 16 becomes a semi-reflective electrode.

  According to the above-described manufacturing method, it is possible to manufacture the organic EL element 1 having a TE structure in which the emitted light 30 is obtained from the side opposite to the glass substrate 11 as shown in FIG. 1 and FIG. On the other hand, in the manufacturing method described above, when the film thickness of the anode 14 is 20 nm and the film thickness of the cathode 16 is 100 nm, the emitted light 30 as shown in FIG. The organic EL element 1 having the BE structure obtained can be manufactured.

  Next, a method for providing the anode 14 with an inclination will be described. In the present embodiment, the anode 14 is inclined, but the interlayer insulating film 13 sandwiched between the anode 14 and the glass substrate 11 may be inclined by a similar method. In addition, as a method of providing the inclination, the above-described manufacturing method uses a method of pressurizing a metal, but there are a rubbing method for performing a rubbing process and a method of forming a film by arranging the glass substrate 11 obliquely. Can be mentioned.

  First, a method of providing an inclination by pressurizing a metal will be described with reference to FIG. In the film formation by pressurization, an inclined pattern is formed in advance on the metal (pressure member) 26 and pressed against the anode 14 (FIG. 9A). At this time, the metal 26 may be heated. After a while, the pressurization of the metal 26 is stopped. When the metal 26 is pulled away from the anode 14, an inclination of the pattern opposite to that of the metal 26 is formed on the anode 14 (FIG. 9C). As described above, an inclined pattern can be formed on the anode 14.

  Next, a method for forming an inclination by rubbing will be described with reference to FIG. In film formation by rubbing, after the anode 14 is formed, the rubbing roller 27 is pressed against the anode 14 while rotating (FIG. 10A), and the rubbing roller 27 is moved as it is (FIG. 10B). At this time, the rubbing roller 27 may be heated. After a while, the pressure on the rubbing roller 27 is stopped. When the rubbing roller 27 is pulled away from the anode 14, an inclination is formed in the anode 14 (FIG. 10C). As described above, an inclined pattern can be formed on the anode 14. The subsequent manufacturing method of the light emitting layer 15 and the like is the same as that described above.

  Next, a method of forming an inclination by arranging the glass substrate 11 obliquely and forming the anode 14 will be described with reference to FIG. Here, a method for depositing the anode material from the crucible (deposition material holder) 28 will be described. In this method, when the anode 14 is formed, the glass substrate 11 is disposed at an angle of 0 ° to 45 ° with respect to the surface (evaporation surface) of the crucible 28. As a result, the distance between the glass substrate 11 and the surface of the crucible 28 differs between the right and left sides of the glass substrate 11. Therefore, the thickness of the anode 14 is different between the left and right sides of the glass substrate 11, and as a result, an inclination can be formed in the anode 14. 11A and 11B are different in the inclination angle of the glass substrate 11. In the inclination of the glass substrate 11 in FIG. 11A, the film thickness of the anode 14 generated by vapor deposition is thicker on the right side than on the left side of the paper, and as a result, the surface of the anode 14 is inclined with respect to the glass substrate 11. become. On the other hand, in the inclination of the glass substrate 11 in FIG. 11B, the film thickness of the anode 14 generated by vapor deposition is thicker on the left side than on the right side of the paper, and as a result, the surface of the anode 14 is relative to the glass substrate 11. , It is inclined in the opposite direction to the case of FIG. By adjusting the inclination angle when the glass substrate 11 is disposed, the inclination angle provided on the surface of the anode 14 can be adjusted. The method for manufacturing the light emitting layer 15 and the like after the formation of the anode 14 is the same as that described above.

  According to the manufacturing method in the present embodiment, the above-described stereoscopic video display device can be manufactured.

[Embodiment 2]
Another embodiment of the display device according to the present invention will be described below with reference to FIG. For convenience of explanation, description of members having the same functions as those used in the above-described embodiments is omitted.

  In the above-described embodiment, the stereoscopic image display device that can view a three-dimensional image without using special glasses has been described. However, the display device in this embodiment is a so-called dual device that allows a plurality of people to simultaneously view different images. A view display device.

  The dual view display device has the same configuration as that of the stereoscopic video display device 10 except that the inclination of each light emitting layer is different from that of the stereoscopic video display device 10 described above.

  FIG. 12 shows the right-viewer light emitting element 1R ′ (first light emission) in the right-viewer image display unit that displays the right-viewer image (first target image) of the dual view display device according to the present embodiment. The left observer's light emission in the left observer's image display unit for displaying the left observer's image (second target image) adjacent to the right observer's image display unit. It is a figure showing the relationship with the light-projection surface of element (2nd light emitting element) 1L '. As shown in FIG. 12, the light exit surface of the left-viewer light emitting element 1L ′ is inclined with respect to the light exit surface of the right-viewer light-emitting element 1R ′, and the tilt angle θ is 90 ° or more and 180 °. Is less than. Thereby, the emitted light 33R emitted perpendicularly from the light emitting surface of the light emitting element 1R ′ for the right observer can reach the right observer (first object) without being blocked by the other light emitting surface. . Similarly, the emitted light 33L emitted perpendicularly from the light emitting surface of the left-viewer light emitting element 1L 'can reach the left observer (second object) without being blocked by the other light emitting surface. As described above, it is possible to show different images to the right and left viewers.

  Since the dual view display device is assumed to be viewed from the outside of the display panel end, unlike the stereoscopic image display device 10, the inclination of the light emitting layer 15 at the end of the display panel is 20 ° or more. Good.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

(Additional notes)
The present invention can also be expressed as follows.
(First configuration)
An organic EL device having a right-eye illumination device and a left-eye illumination device that uses a microcavity effect to limit the viewing angle to within 0 to 120 degrees.
(Second configuration)
The organic EL element according to the first configuration, wherein the illumination element has an inclination of 0 to 20 degrees in an interlayer insulating film or an anode.
(Third configuration)
2. The organic EL element according to the second configuration, wherein the inclination of the interlayer insulating film or the anode gradually becomes steeper from the center of the panel toward the edge.
(Fourth configuration)
The interlayer insulation according to the second and third configurations using a method in which an inclined pattern is formed and a method in which the interlayer insulating film or the anode is pressurized as a method for producing the inclination in the interlayer insulating film or the anode. Inclined fabrication method for membranes and anodes.
(Fifth configuration)
4. The method of manufacturing an interlayer insulating film or anode according to the second or third configuration using a rubbing method as a method of manufacturing an inclination in the interlayer insulating film or the anode.
(Sixth configuration)
4. A method for producing an inclined anode according to the second and third configurations, wherein the anode is prepared by arranging the substrate obliquely in the anode.
(Seventh configuration)
The organic EL element according to any one of the first, second, and third structures, wherein a barrier element having a light-shielding portion and a light-transmitting portion is provided in front of the right-eye illumination element and the left-eye illumination element.
(Eighth configuration)
First, second, and third configurations having spherical lenses for condensing light emitted from the right-eye illumination element and the left-eye illumination element, respectively, in front of the right-eye illumination element and the left-eye illumination element The organic EL element as described in.

  INDUSTRIAL APPLICABILITY The present invention can be used for a video display device that can view a three-dimensional image without requiring special glasses, and a display device that allows a plurality of viewers to view different images simultaneously.

1 Organic EL device (light emitting device)
1R Right eye element (first light emitting element)
1L Left eye device (second light emitting device)
1R ′ Light-emitting element for right observer (first light-emitting element)
1L 'Light-emitting element for left observer (second light-emitting element)
2R Right eye (first subject)
2L left eye (second subject)
3 parallax barrier 10 3D image display device (display device)
11 Glass substrate (substrate)
12 Wiring 13 Interlayer insulating film 14 Anode (first electrode)
15 Light emitting layer (organic EL layer)
16 Cathode (second electrode)
26 Metal (Pressure member)
27 rubbing roller 28 crucible (deposition material holder)

Claims (12)

A display device that includes a substrate and a plurality of light emitting elements formed on the substrate and having a light emitting layer, and displays a first target image and a second target image that may be different from each other,
The plurality of light emitting elements include one or more first light emitting elements for displaying the first target image, and one or more second light emitting elements for displaying the second target image,
The main component of the emitted light of each of the one or more first light emitting elements proceeds to the first object, and the main component of the emitted light of each of the one or more second light emitting elements is changed to the second object different from the first object. As it goes on, in at least one part of the one or more first light emitting elements and at least one part of the one or more second light emitting elements, the light emitting surface of the light emitting layer is inclined with respect to the substrate. A display device. The light emitting layer is sandwiched between the first electrode and the second electrode,
2. The device according to claim 1, wherein one of the first electrode and the second electrode is a reflective electrode, the other is a transflective electrode, and the light-emitting element has a microcavity structure. Display device.   3. The inclination of the display panel comprising the plurality of light emitting elements increases as the light emitting element is disposed from the center to the end of the display panel. The display device described in 1.   The display device according to claim 3, wherein the inclination is greater than 0 ° and 17 ° or less.   The light emitting layer of the first light emitting element has an inclination of an angle θ with respect to the light emitting layer of the second light emitting element provided adjacent to the first light emitting element, and the angle θ is The display device according to claim 1, wherein the display device is 90 ° or more and less than 180 °.   The display device according to claim 1, wherein the light emitting element is an organic electroluminescence element in which the light emitting layer is an organic electroluminescence layer.   A barrier element having a light-transmitting portion that transmits only light traveling in a specific direction and a light-shielding portion that blocks light traveling in the other direction is disposed on the front surface of the light-emitting element. The display device according to any one of claims 1 to 6.   7. The display device according to claim 1, wherein a spherical lens for condensing emitted light from each light emitting element is disposed on a front surface of the light emitting element. . A manufacturing method of a display device including a plurality of light emitting elements formed by providing a wiring, an interlayer insulating film, a first electrode, a light emitting layer, and a second electrode in this order on a substrate,
A method of manufacturing a display device, comprising a step of providing an inclination with respect to the substrate on a surface of the interlayer insulating film or the first electrode opposite to the substrate.   After the formation of the interlayer insulating film or the first electrode, the inclination is provided by pressing the interlayer insulating film or the first electrode using a pressure member having an inclined pattern formed on the surface thereof. A method for manufacturing a display device according to claim 9.   10. The display device according to claim 9, wherein after the formation of the interlayer insulating film or the first electrode, the inclination is provided by performing a rubbing process on the interlayer insulating film or the first electrode. Manufacturing method.   When the interlayer insulating film or the first electrode is formed, the substrate is inclined with respect to the evaporation surface of the vapor deposition material holder that holds the material of the interlayer insulating film or the first electrode, and the material is The method for manufacturing a display device according to claim 9, wherein the interlayer insulating film or the first electrode is formed by vapor deposition.

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