JP2005276521A - Organic el panel and display device using organic el panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic EL panel having a shape other than rectangular shape and with low cost, and a display device using the organic EL panel. <P>SOLUTION: The organic EL panel 12 has a laminated body 33 having a first electrode 37, an organic layer 39, and a second electrode 40 formed on a substrate 32, and the laminated body 33 is covered by a sealing member 34. The outline of the substrate is circular, and the outline of the sealing member 34 is rectangular. The substrate 32 comprises a first region 32a in which the laminated body is formed and which is used for display and a second region 32b which protrudes from the sealing member 34 and is not used for display. A circular polarized light member 41 is provided in the front of the substrate 32. A shading member 35 having a window part 35a smaller than the region where the second electrode is formed, is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an organic EL panel in which a laminate in which an organic layer is sandwiched between a first electrode and a second electrode is formed on a substrate, and the laminate is covered with a sealing member, and the organic EL panel and a pointer-type instrument The present invention relates to a display device using.

  Conventionally, various organic EL panels have been proposed, and disclosed in, for example, Patent Document 1 and Patent Document 2. The organic EL panel 1 is obtained by forming a laminated body 3 on a glass substrate 2, and the laminated body 3 includes a first electrode 4, an insulating layer 5, an organic layer 6, and a second electrode 7 (see FIG. 8). . The organic layer 6 includes a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer, and is sandwiched between the first electrode 4 and the second electrode 7. The laminate 3 is covered with a sealing glass 8, and the sealing glass 8 is bonded to the glass substrate 2 with an adhesive 9.

On the crow substrate 2, an anode terminal portion 4 a and a cathode terminal portion 4 b made of the same material as the anode portion 4 are formed. The anode terminal portion 4 a is connected to the anode portion 4, and the cathode terminal portion 4 b is electrically connected to the second electrode 7. In the organic EL panel 1, the light emitting portion P shines by connecting a power source to the anode terminal portion 4a and the cathode terminal portion 4b. The organic EL panel 1 is attracting attention as a self-luminous FPD (Flat Panel Display) that replaces an LCD that is a non-self-luminous display element.
JP 2001-267066 A Japanese Patent Laid-Open No. 9-127858

However, the organic EL panel 1 is rectangular when viewed from the front, and there is no organic EL panel 1 having a contour (for example, a circular shape) including a curved line. However, in recent years, an organic EL panel 1 having a shape other than a rectangle has been demanded as a display element used in a display device having a novel appearance.
A first object of the present invention is to provide an organic EL panel having a novel appearance that is a shape other than a rectangle and a display device using the organic EL panel.
If an attempt is made to obtain a circular organic EL panel 1, not only the glass substrate 2 is formed in a circular shape but also the sealing glass 8 needs to be formed in a circular shape, so that the organic EL panel 1 is expensive. It is thought to be.
The second problem of the present invention is to provide an inexpensive organic EL panel having a shape other than a rectangle and a display device using the organic EL panel.

  In order to solve the above-mentioned problems, the present invention forms a laminated body having a first electrode, an organic layer, and a second electrode on a substrate, and covers the laminated body with a sealing member. The organic EL panel, wherein the substrate includes a first region where the laminate is formed and used for display, and a second region which protrudes from the sealing member and is not used for display. The outline of the region includes a curve.

  Moreover, this invention is the organic EL panel which formed the laminated body which has a 1st electrode, the organic layer, and the 2nd electrode on the board | substrate as described in Claim 2, and covered the said laminated body with the sealing member. The outline of the substrate includes a curve, and the outline of the sealing member includes a straight line.

  Moreover, this invention is the organic EL panel which formed the laminated body which has a 1st electrode, the organic layer, and the 2nd electrode on the board | substrate as described in Claim 3, and covered the said laminated body with the sealing member. The outline of the substrate is circular, and the outline of the sealing member is rectangular.

  According to the present invention, a circularly polarizing member is provided on the front side of the substrate.

  Moreover, this invention provides the light-shielding member which has a window part smaller than the area | region in which said 2nd electrode was formed, as described in Claim 5.

  According to a sixth aspect of the present invention, the light shielding member is a light shielding layer formed on the substrate.

  In addition, the present invention provides a display panel having an indicator portion, a pointer that points to the indicator portion, a pointer driving means that rotates the pointer, a first electrode, and an organic layer. An organic EL panel having a laminate including a second electrode formed on a substrate and covered with a sealing member, wherein the organic EL panel is disposed on a front side of the pointer driving unit. The substrate has a first region where the laminate is formed and used for display, and a second region which protrudes from the sealing member and is not used for display, and the outline of the second region is a curved line. Is included.

  According to the present invention, as described in claim 8, a display plate having an indicator portion, a pointer that points to the indicator portion, a pointer driving means that rotates the pointer, a first electrode, and an organic layer An organic EL panel having a laminate including a second electrode formed on a substrate and covered with a sealing member, wherein the organic EL panel is disposed on a front side of the pointer driving unit. The outline of the substrate includes a curved line, and the outline of the sealing member includes only a straight line.

  According to the present invention, the display panel having an indicator portion, a pointer that points to the indicator portion, a pointer driving means that rotates the pointer, a first electrode, and an organic layer are provided. An organic EL panel having a laminate including a second electrode formed on a substrate and covered with a sealing member, wherein the organic EL panel is disposed on a front side of the pointer driving unit. The outline of the substrate is circular, and the outline of the sealing member is rectangular.

  Since the organic EL panel has a shape other than a rectangle such as a circular shape in a front view, the organic EL panel has a novel appearance, and the sealing member may have a shape such as a rectangle, so that there is no risk of being expensive.

Hereinafter, an embodiment in which the present invention is applied to a vehicle display device will be described with reference to the accompanying drawings. 1 to 5 show the first embodiment.
The vehicle display device 11 includes an organic EL panel 12 that displays navigation information and the like, and three pointer-type meters (a speedometer 13, a fuel gauge 14, and a water temperature gauge 15) housed in a housing 16. is there. The speedometer 13 is disposed between the fuel gauge 15 and the water temperature gauge 16.

  The speedometer 13 includes a display board 17, a pointer 18, a stepping motor 19 (pointer driving means), and a circuit board 20. The display board 17 has a plurality of indicator portions 17 arranged in an arc shape. The pointer 18 is rotated by a stepping motor 19 to indicate the indicator portion 17a of the display board 17. The circuit board 20 is formed with a hole 20a through which the rotation shaft 19a of the stepping motor 19 passes, and the stepping motor 19 is mounted on the rear surface side of the circuit board 20. The organic EL panel 12 is disposed on the front side of the speedometer 13.

  The fuel gauge 14 and the water temperature gauge 15 have display plates 24 and 25 and pointers 26 and 27, respectively. The display plates 24 and 25 are formed by printing indicator portions 24a and 25a on a substrate made of a translucent resin (for example, polycarbonate). The hands 26 and 27 are rotated by a stepping motor (not shown) to indicate the indicator portions 24a and 25a of the display plates 24 and 25.

  Next, the organic EL panel will be described in detail with reference to FIGS. The organic EL panel 12 is obtained by forming a laminated body 33 on a glass substrate 32 through a light shielding layer 35 and a planarizing layer 36 and bonding a sealing glass 34 so as to cover the laminated body 33.

The stacked body 33 includes a first electrode 37, an insulating layer 38, an organic layer 39, and a second electrode 40. The first electrode 37 is made of ITO (Indium), which is a mixture of indium oxide (In ₂ O ₃ ) and tin oxide (SnO ₂ ).
Tin Oxide) and is formed by means such as sputtering or vapor deposition. The insulating layer 38 is made of a polyimide-based insulating material, and is formed by means such as a photolithography method.

  The organic layer 39 includes a hole injection layer 39a, a hole transport layer 39b, a light emitting layer 39c, and an electron transport layer 39d (see FIG. 5). The organic layer 39 only needs to have at least the light emitting layer 39c, but the emission luminance can be improved by providing the hole injection layer 39a, the hole transport layer 39b, and the electron transport layer 39d as in this embodiment. Can do. The second electrode 40 is made of aluminum (Al).

  The glass substrate 32 has a circular shape when viewed from the front, and has a square display area 32a (first area) in which the stacked body 33 is formed, and four substantially crescent-shaped shapes positioned around the display area 32a. Non-display area 32b (second area). The sealing glass 34 has a smaller square shape than the glass substrate 32 and is bonded to the glass substrate 32 with an ultraviolet curable adhesive.

  The light shielding layer 35 is made of a black print layer, has a window 35 a corresponding to the display region 32 a, and is formed on the rear surface of the glass substrate 32. The flattening layer 36 flattens the surface on which the stacked body 33 is formed. A circularly polarizing plate 41 is attached to the front surface of the glass substrate 32. The circularly polarizing plate 41 is composed of a birefringent plate 42 and a polarizing plate 43. The birefringent plate 42 is also called a quarter wavelength plate.

  According to this embodiment, since the organic EL panel 12 has a circular shape when viewed from the front, the vehicle display device has a novel design. Moreover, since the sealing glass 34 of the organic EL panel 12 may be rectangular, the organic EL panel 12 is relatively inexpensive.

  Further, by providing the circularly polarizing plate 41 on the front surface of the organic EL panel 12, the display contrast ratio of the organic EL panel 12 is improved. In addition, although the external light which injects into the organic electroluminescent panel 12 is reflected in the 2nd electrode 40, since external light is not reflected in the non-display area | region 32b and there exists a possibility that an appearance may differ, the light shielding layer 35 may be formed. desirable.

  In addition, this invention is not limited to a 1st Example, For example, you may form the light shielding layer 45 in the front surface of the circularly-polarizing plate 41 like 2nd embodiment shown in FIG. Further, the shape of the glass substrate 32 is not limited to a circle. For example, as in the third embodiment shown in FIG. 7, the glass substrate 32 has a circular outer shape line 32c and a rectangular outline 32d. May be.

The front view of the display apparatus for vehicles which shows 1st embodiment of this invention. Sectional drawing which shows the principal part which shows embodiment same as the above. The front view of the organic electroluminescent panel which shows embodiment same as the above. Sectional drawing of the organic electroluminescent panel which shows embodiment same as the above. The expanded sectional view of the organic layer which shows embodiment same as the above. Sectional drawing of the organic electroluminescent panel which shows 2nd embodiment of this invention. The front view of the organic electroluminescent panel which shows 3rd embodiment of this invention. Sectional drawing of the organic electroluminescent panel which shows a prior art example.

Explanation of symbols

12 Organic EL panel 32 Glass substrate (substrate)
32a Display area (first area)
32b Non-display area (second area)
33 Laminated body 34 Sealing glass (sealing member)
35a Window part 35 Light shielding layer (light shielding member)
37 First electrode 39 Organic layer 40 Second electrode 41 Circularly polarizing plate (circularly polarizing member)

Claims (9)

An organic EL panel in which a laminate having a first electrode, an organic layer, and a second electrode is formed on a substrate, and the laminate is covered with a sealing member,
The substrate has a first region where the laminate is formed and used for display, and a second region which protrudes from the sealing member and is not used for display, and the outline of the second region includes a curve. Organic EL panel characterized by An organic EL panel in which a laminate having a first electrode, an organic layer, and a second electrode is formed on a substrate, and the laminate is covered with a sealing member,
The organic EL panel according to claim 1, wherein the outline of the substrate includes a curve, and the outline of the sealing member includes a straight line. An organic EL panel in which a laminate having a first electrode, an organic layer, and a second electrode is formed on a substrate, and the laminate is covered with a sealing member,
An organic EL panel, wherein the substrate has a circular outline and the sealing member has a rectangular outline.   The organic EL panel according to claim 1, wherein a circularly polarizing member is provided on the front side of the substrate.   The organic EL panel according to claim 4, further comprising a light shielding member having a window portion smaller than a region where the second electrode is formed.   The organic EL panel according to claim 5, wherein the light shielding member is a light shielding layer formed on the substrate. Forming a laminated body having a display plate having an indicator portion, a pointer indicating the indicator portion, a pointer driving means for rotating the pointer, a first electrode, an organic layer, and a second electrode on the substrate; An organic EL panel having a laminate covered with a sealing member,
The organic EL panel is disposed on the front side of the pointer driving means, and the substrate includes a first region where the laminate is formed and used for display, and a second region which protrudes from the sealing member and does not serve for display. And the outline of the second region includes a curve. Forming a laminated body having a display plate having an indicator portion, a pointer indicating the indicator portion, a pointer driving means for rotating the pointer, a first electrode, an organic layer, and a second electrode on the substrate; An organic EL panel having a laminate covered with a sealing member,
The organic EL panel is disposed on a front side of the pointer driving means, the outline of the substrate includes a curved line, and the outline of the sealing member includes only a straight line. Forming a laminated body having a display plate having an indicator portion, a pointer indicating the indicator portion, a pointer driving means for rotating the pointer, a first electrode, an organic layer, and a second electrode on the substrate; An organic EL panel having a laminate covered with a sealing member,
The organic EL panel is disposed on the front side of the pointer driving means, the outline of the substrate is circular, and the outline of the sealing member is rectangular.

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