JP2005183106A - Pm type organic el panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passive matrix type organic EL panel allowing products each having low power consumption, a large screen, high precision, high luminance and uniform luminance to be provided at the same time. <P>SOLUTION: This passive matrix type organic EL panel is provided with an EL substrate composed by forming a plurality of small organic EL panels on one transparent substrate and one vessel substrate having a size corresponding to the one transparent substrate at a location opposite to it, and is so structured that the one vessel substrate is provided with external extraction terminals to be electrically connected to electrodes of the small organic EL panels; spaces are formed between the small organic EL panels and the one vessel substrate; and a desiccant is installed in the spaces. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a passive matrix organic electroluminescence panel (hereinafter referred to as PM organic EL panel) that displays video information or image information.

  Organic electroluminescence displays (hereinafter referred to as “organic EL displays”) have superior characteristics such as self-emission, high-speed response, and wide viewing angle that are not found in liquid crystal displays. Expectation is great as a flat panel display.

  Organic EL displays can be classified into a passive matrix type (hereinafter referred to as PM type) and an active matrix type (hereinafter referred to as AM type) depending on the driving method. Since the PM type is provided with a drive circuit outside the organic EL panel, it is said that the structure of the organic EL panel itself is simplified and can be realized at low cost. The PM type has already been commercialized for in-vehicle use and mobile phones. Since the organic EL is a current driving element, it is necessary to make the current flowing through each light emitting pixel the same size in order to eliminate the luminance variation of the organic EL panel. However, due to the problems shown in the following (1) and (2), it is difficult to simultaneously realize low power consumption, large screen, high definition, high luminance and uniform luminance.

(1) In order to make the luminance of all pixels uniform, the current flowing through each pixel must be the same. For this purpose, either the anode or the cathode of each pixel is used as a constant current source. However, in order to operate as a constant current source, it is necessary to increase the drive voltage so as not to be affected by the voltage drop due to the resistance component of the bus line. This is a factor that increases power consumption. When the drive voltage cannot be sufficiently high, a voltage drop corresponding to the length of the bus line length to each pixel affects the amount of current for light emission. That is, it does not become a constant current source, but causes a luminance variation.

(2) In order to obtain a predetermined surface luminance, the PM type needs to emit light with an instantaneous luminance n times when the number of scanning lines of the display panel is n. Usually, since the current flowing through the pixel is proportional to the light emission luminance, the current to flow is n times. However, since the organic EL has a characteristic that the light emission efficiency decreases as the current flowing increases, the current of n times or more is required to obtain a predetermined surface luminance. Thus, the power consumption increases as the number n of scanning lines increases. This problem further promotes the problem (1).

  These problems will be described using the conventional PM type organic EL panel 101 shown in FIGS. 11 is a top view of the organic EL, and FIG. 11 is a view corresponding to the view JJ in FIG.

  11 and 12, a transparent electrode 103 is formed on the transparent substrate 102 in the horizontal direction. A red organic light emitting layer 104, a green organic light emitting layer 105, and a blue organic light emitting layer 106 are formed on the transparent electrode 103 to be an anode by vacuum deposition so as to be orthogonal to the transparent electrode 103. A metal electrode 107 serving as a cathode is formed on each organic light emitting layer 104, 105, 106 by vacuum deposition or the like. A counter transparent substrate 108 is provided on the upper surface of the metal electrode 107, and the PM type organic EL panel 101 is configured by bonding the transparent substrate 102 and the counter transparent substrate 108 together. In this example, 10 pixel lines in the horizontal direction (one set of each of the red organic light emitting layer 104, the green organic light emitting layer 105, and the blue organic light emitting layer 106 is one pixel line), and the vertical direction is 10 pixels. It consists of pixels. Here, the horizontal metal electrode 107 is a scanning line, and the vertical transparent electrode 103 is a data pixel. Therefore, the number of scanning lines of the PM type organic EL panel 101 is 30.

  Since there are 30 scanning lines in this way, the instantaneous luminance in each of the red organic light emitting layer 104, the green organic light emitting layer 105, and the blue organic light emitting layer 106 is 30 times the surface luminance of the PM type organic EL panel 101. It is necessary to emit light with brightness. Usually, since the amount of current flowing through the organic EL light emitting layer is proportional to the light emission luminance, the current to be supplied requires 30 times. However, since the organic EL light emitting layer has a characteristic that the light emission efficiency decreases as the current flowing increases, a current amount of 30 times or more is required to obtain a predetermined luminance. Thus, the power consumption increases as the number of scanning lines increases, that is, as the definition becomes higher. In addition, if the screen becomes large, the transparent electrode 103 and the metal electrode 107 forming the bus line may become long and the resistance value may increase, and if it increases, the power loss increases. In particular, the transparent electrode 103 has a much larger resistance value than the metal electrode 107, and the power loss of the transparent electrode 103 becomes a serious problem. As described above, when an attempt is made to increase the luminance by increasing the screen size or resolution (increasing the number of scanning lines) in the conventional organic EL panel, the power consumption of the organic EL light emitting layer and the power consumption by the bus line increase. Is a problem.

  From the above, the PM type organic EL panel that can be commercialized at present has a screen size of several inches or less and the number of pixels of about 10,000 pixels.

  In order to solve the problems of the conventional PM type organic EL panel, which consumes a large amount of power when the brightness is uniform with a large screen, high definition, and high brightness, low resistance bus line materials and luminous efficiency Development of an organic material that is a high organic material and does not decrease in luminous efficiency even when a large current is passed is essential, but it is a difficult problem at present and has not yet been realized.

  Patent Documents 1 to 3 report PM-type organic EL panels that can realize low power consumption even when the brightness is uniform with a large screen, high definition, and high brightness.

  In Patent Document 1, in order to improve the problems (1) and (2), a structure is provided in which the display panel is divided by multilayering the first anode on the transparent electrode side through an insulator. The problem (1) cannot be solved for the following reasons. That is, since a panel is generated in which the first anode serving as the transparent electrode is driven in a state where the first anode is long in the longitudinal direction, it is difficult to reduce the resistance component of the electrode, and the power consumption increases. In addition, since the insulating layer is provided on the first anode for dividing the display panel, the organic light emitting layer has a step difference in the divided display panel so that the organic light emitting layer has a uniform thickness. It is very difficult to form a film, and as a result, it is difficult to obtain a film with good luminance uniformity.

  Further, in Patent Document 2, in order to improve the problems (1) and (2), a display panel is divided by providing a first bus electrode that connects a first electrode constituted by a transparent electrode and an external extraction terminal. Although providing a structure, the following problems may occur:

  That is, since the wiring of the first bus electrode is performed using the gap between the first electrodes, which are transparent electrodes, the wiring width cannot be increased. In this structure, when the display panel is divided into n parts, n first bus electrodes are wired between the first electrodes which are transparent electrodes. Therefore, the wiring width of the first bus electrodes must be made thinner. As a result, the resistance component becomes large, and the effect of improving the problem (1) is diminished, and the high definition is also limited. Increasing the wiring width of the first bus electrode reduces the resistance component and increases the power consumption reduction effect, but the first electrode of the transparent electrode is scraped off. This lowers the light emission luminance, making it difficult to achieve high luminance.

  In Patent Document 3, although the idea is not intended to reduce power consumption, the electrodes are structurally divided, and as a result, power consumption can be reduced. However, since the driving circuit is mounted on the circuit board and the organic EL layer is formed in close contact with the inner surface of the circuit board, the heat generated in the driving circuit propagates through the circuit board and passes through the organic EL layer. Will raise the temperature. Since the organic EL material has a characteristic that the luminance deterioration becomes remarkable when the temperature rises, in order to maintain the luminance, it is necessary to treat the organic EL layer with a current more than necessary to compensate the luminance. This further raises the temperature, so that power consumption increases abruptly when trying to maintain a predetermined luminance. In addition, since the small panel is formed by the circuit board and the sealing material, there is a possibility that the luminance is different for each small panel, and there is a concern that luminance variation occurs in units of the small panel. It is possible to eliminate the brightness variation at a given brightness by increasing the brightness of the dark small panel, but increasing the current of the small panel increases the current, resulting in an increase in power consumption. Low power consumption becomes difficult.

JP 2002-216777 A JP 2000-56707 A JP 2001-296814 A

  The present invention has been made to solve such problems, and provides a PM type organic EL panel intended to simultaneously obtain low power consumption, large screen, high definition, high brightness, and uniform brightness. Is.

The present invention provides an EL substrate in which a plurality of small organic EL panels are formed on one transparent substrate, and one sheet having a size corresponding to the one transparent substrate, provided at a position opposed to the EL substrate. And a container substrate of
The one container substrate is provided with an external extraction terminal for electrical connection with the electrode of the small organic EL panel, and a space is provided between the small organic EL panel and the one container substrate. And a PM type organic EL panel in which a desiccant is provided in the space.

  According to the present invention, it is possible to obtain a PM type organic EL panel aiming at obtaining simultaneously low power consumption, large screen, high definition, high brightness, and uniform brightness.

  Embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Embodiment 1
An embodiment of the PM type organic EL panel of the present invention will be described with reference to FIGS. 1 is a top view of an organic EL light emitting surface 1 configured by arranging a plurality of small organic EL light emitting surfaces, FIG. 2 is a view corresponding to the arrow AA in FIG. 1, and FIG. 3 is an enlarged view of a portion B in FIG. 4 is a top view in which the container substrate 20 is bonded to the top surface of the transparent substrate shown in FIG. 1, FIG. 5 is a view corresponding to the arrow CC in FIG. 4, and FIG. 6 is the container substrate shown in FIG. FIG. 7 is a diagram corresponding to the arrow DD in FIG. 6, FIG. 8 is an enlarged view of a portion E in FIG. 6, and FIG. 9 is an enlarged view of a portion F in FIG. . In FIG. 7, the viewer sees the full color image of the PM type organic EL panel through the transparent substrate 2.

  First, the organic EL light emitting surface 1 will be described with reference to FIGS. 1 and 2.

  In the example of FIGS. 1 and 2, the organic EL light emitting surface 1 is configured by arranging five small organic EL light emitting surfaces 3 a to 3 e on a transparent substrate 2. As the transparent substrate 2, for example, a transparent body such as glass, polycarbonate, acrylic resin, or polyethylene terephthalate is used. On the small organic EL light emitting surfaces 3a to 3e, transparent electrodes 4a to 4e that are electrically insulated corresponding to the respective small organic EL light emitting surfaces 3a to 3e are formed in the horizontal direction. The transparent electrodes 4a to 4e are made of ITO (Indium Tin Oxide) or the like. Vacuum deposition is performed so that the red organic light emitting layer 5, the green organic light emitting layer 6 and the blue organic light emitting layer 7 made of a low molecular material are orthogonal to the transparent electrodes 4a to 4e on the upper surfaces of the transparent electrodes 4a to 4e serving as anodes. The film is formed by, for example. The red organic light emitting layer 5, the green organic light emitting layer 6 and the blue organic light emitting layer 7 have a multilayer structure for high efficiency light emission. In this embodiment mode, a low molecular material is formed by vacuum vapor deposition, but may be formed by applying a polymer material by printing or the like. On each of the organic light emitting layers 5, 6 and 7, a metal electrode 8 serving as a cathode is formed by vacuum deposition or the like using a metal material such as aluminum. The light emission position of each organic light emitting layer 5, 6 and 7 is the intersection of the transparent electrodes 4a to 4e and the metal electrode 8, and light emission applies voltage to the transparent electrodes 4a to 4e and the metal electrode 8 to each organic light emitting layer. This occurs by passing a current through 5, 6, and 7. Each of the small organic EL light emitting surfaces 3a to 3e shown here has two pixel lines in the horizontal direction (one set each of the red organic light emitting layer 5, the green organic light emitting layer 6, and the blue organic light emitting layer 7). The vertical direction is composed of 10 pixels. In the present embodiment, horizontal metal electrodes 8 are used as scan lines, and vertical transparent electrodes 4a to 4e are used as pixel data. Therefore, the number of scanning lines of each small organic EL light emitting surface 3a to 3e is six.

  In the conventional structure shown in FIGS. 11 and 12, the number of horizontal scanning lines is 30 lines. In the conventional structure, when the luminance of the PM organic EL panel is P, the instantaneous luminance of each of the organic light emitting layers 5, 6 and 7 on one scanning line needs to be 30 times P. However, the instantaneous luminance may be six times P by providing the small organic EL light emitting surfaces 3a to 3e as in the present invention. Since the organic EL light emitting layer has a characteristic that the light emission efficiency is lowered when the current flowing is increased, the structure in which the transparent electrodes 4a to 4e are separated from each other causes the scanning signal to be applied to the metal electrode 8 serving as a scanning line. Since the repetition period can be shortened, the magnitude of the instantaneous luminance can be suppressed, and the decrease in light emission efficiency can be prevented. Further, since the length of the transparent electrodes 4a to 4e can be shortened, the voltage drop due to the resistance component of the bus line is reduced, leading to low power consumption.

  Next, the enlarged portion of B in FIG. 1, that is, the ends of the small organic EL light emitting surfaces 3a to 3e will be described with reference to FIG. Since the small organic EL light emitting surfaces 3a to 3e have the same inter-pixel width 10 and inter-width 11 that are portions that do not contribute to light emission as shown in the small organic EL light emitting surface 3c, the transparent electrodes 4a to 4e are formed. Even if 4e is divided, there is no worry of image quality deterioration. The right end of the transparent electrode 4c is formed with a gap 12 so as not to contact the transparent electrode 4d of the small organic EL light emitting surface 3d adjacent to the right. The region of the transparent electrode 4c that protrudes to the right from the blue organic light emitting layer 7 serves as a data signal application terminal 13c for applying a data signal to the transparent electrode 4c. Although not shown, data signal application terminals 13a to 13e are similarly provided at the ends of the transparent electrodes 4a to 4e on the small organic EL light emitting surfaces 3a to 3e, respectively.

  Next, a structure in which the container substrate 20 is bonded onto the organic EL light emitting surface 1 will be described with reference to FIGS. 4 and 5. FIG. 4 is a top view in which the container substrate 20 is bonded to the top surface of the transparent substrate 2 shown in FIG. FIG. 5 is a view corresponding to the view CC in FIG. The container substrate 20 is bonded to the transparent substrate 2 so that water and gases do not enter the panel from the outside. The container substrate 20 and the transparent substrate 2 are bonded together so that a scanning signal can be applied to the metal electrode 8 on the transparent substrate 2 and a data signal can be applied to the external extraction terminals 14 a to 14 e provided on the container substrate 20. That is, the container substrate 20 and the transparent substrate 2 are bonded together so that the external extraction terminals 14a to 14e are electrically connected to the data signal application terminals 13a to 13e. In addition, the code | symbol 32 in FIG. 5 is a sealing member. Thereby, since the scanning signal and the data signal are applied to the transparent electrodes 4a to 4e and the metal electrode 8, light emission from the organic EL light emitting layers 5, 6, and 7 occurs normally. The external extraction terminals 14a to 14e are provided as many as at least the number of data signal application terminals 13a to 13e provided on the transparent electrodes 4a to 4e. In the example shown in FIG. 4, the number of transparent electrodes 4a-4e is 10 in the vertical direction of each small organic EL light emitting surface 3a-3e, and the number of small organic EL light emitting surfaces 3a-3e is five. Therefore, the container substrate 20 is provided with a total of 50 external extraction terminals 14a to 14e.

  Electrical contact between the external extraction terminals 14a to 14e and the data signal application terminals 13a to 13e is performed by using a conductive resin for the contact portions or by physical contact by mechanical pressing between the terminals.

  The external lead terminals 14a to 14e have a function as a conductor by making a fine hole in the container substrate 20 made of an insulator by, for example, mechanical fine processing and pouring the conductive resin 15 there. is there. From the surface side of the external extraction terminals 14a to 14e, lead wires 16a to 16e connected to the conductive resins 15a to 15e are wired to the front side of the container substrate 20 with a predetermined length. The lead wires 16a to 16e are connected to the terminals of the driving IC (not shown in FIGS. 4 and 5).

  As shown in FIGS. 4 to 5, a sheet-like desiccant 17 is provided on the inner wall of the container substrate 20. In the present embodiment, spaces are provided in the inner wall portions corresponding to the positions of the small organic EL light emitting surfaces 3a to 3e of the container substrate 20, and the desiccants 17a to 17e are provided in the spaces of the inner wall portions. These desiccants 17a to 17e are attached for the purpose of absorbing the gas and moisture coming out from the inner wall of the container substrate 20 and the gas and moisture coming out from each color organic EL light-emitting layer 5, 6, and 7. Furthermore, since a space is provided between the container substrate 20 and the organic EL light emitting surface 1, the fluidity of gas and moisture can be improved, and the effects of the desiccants 17a to 17e can be enhanced.

Subsequently, FIGS. 6 and 7 will be described. 6 is a diagram in which drive ICs 18a to 18e are mounted on the container substrate 20 shown in FIG. 4, and FIG. 7 is a diagram corresponding to the arrow DD in FIG. 6. Conductivity in external extraction terminals 14a to 14e The lead wires 16a to 16e connected to the resins 15a to 15e are connected to signal terminals of the drive ICs 18a to 18e attached to predetermined positions of the container substrate 20 by pressure bonding or a conductive adhesive. If the driving ICs 18a to 18e operate and the temperature rises, and the heat is transmitted to the organic EL light-emitting layers 5, 6, and 7 and the temperature of the light emitting part rises locally, the temperature rise may cause luminance deterioration. There is. As a result, the entire screen does not have uniform brightness. As shown in FIG. 7, when a space is provided in the container substrate 20 and the organic EL light emitting surface 1, the temperature rise in the periphery of each color organic EL light emitting layer 5, 6, 7 due to the heat of the drive ICs 18a to 18e is uniform. As a result, it is possible to prevent local luminance deterioration.

  Next, FIG. 8 and FIG. 9 will be described. 8 is an enlarged view of a portion E in FIG. 6, and FIG. 9 is an enlarged view of a portion F in FIG.

  The in-panel front ends 19b and 19c of the external extraction terminals 14a to 14e are electrically connected to the transparent electrodes 4b and 4c, respectively. For example, the tip portion is made of a metal surface, and the metal surface is pressure-bonded to the transparent electrode, or the tip portion is connected to the transparent electrode with a conductive adhesive. Thereby, the data signal given from the signal terminals of the drive ICs 18b and 18c passes through the lead wires 16b and 16c, the conductive resins 15b and 15c, and the front end portions 19b to 19c in the panel, and is applied to the transparent electrodes 4b and 4c. Will be. Front sides of the external lead terminals 14a to 14e are surrounded by insulators 30b and 30c. The insulators 30b and 30c use a material that blocks moisture and gas, thereby preventing moisture and gas from penetrating into the container substrate 20 from the external extraction terminals 14a to 14e. As the insulators 30b and 30c, for example, synthetic resin or frit glass is used.

  In the present embodiment, by providing the small organic EL light emitting surfaces 3a to 3e having a structure for separating the transparent electrodes 4a to 4e, the repetition cycle of the scanning signal applied to the metal electrode 8 that is a scanning line can be shortened. The size of the light source can be suppressed, and a decrease in light emission efficiency can be prevented. Further, since the length of the transparent electrodes 4a to 4e can be shortened, the voltage drop due to the resistance component of the bus line is reduced, leading to low power consumption.

  In the present embodiment, the scanning signal is bonded to the metal electrode 8 on the transparent substrate 2 and the data signal is bonded to the external extraction terminals 14 a to 14 e provided on the container substrate 20. The external extraction terminals 14a to 14e are provided by at least the number of data signal application terminals 13a to 13e provided on the transparent electrodes 4a to 4e, and the electrical connection between the external extraction terminals 14a to 14e and the data signal application terminals 13a to 13e is provided. Since the contact is made by using a conductive resin for each contact portion or by physical contact by mechanical pressing, the scanning signal and the data signal are accurately transferred to the transparent electrodes 4a to 4e and the metal electrode 8. Therefore, the organic EL light-emitting layers 5, 6, and 7 can emit light normally.

  Further, in the present embodiment, desiccants 17a to 17e are provided on the inner wall of the container substrate 20, and the gas and moisture emitted from the inner wall of the container substrate 20 and the gas emitted from each color organic EL light-emitting layer 5, 6, 7 are provided. It is possible to absorb water and moisture, and a long life is achieved. As a result, no luminance deterioration occurs, so that power input for increasing the luminance can be suppressed and low power consumption can be realized.

  In addition, since there is a space between the container substrate 20 and the organic EL light emitting surface 1, the fluidity of gas and moisture is improved, and the effects of the desiccants 17a to 17e are improved. This does not cause deterioration in luminance, can suppress power input for increasing luminance, and can realize low power consumption.

  In the present embodiment, when the driving ICs 18a to 18e are operated to increase the temperature and the heat is transferred to the organic EL light-emitting layers 5, 6, and 7 and the temperature of the light-emitting portion is locally increased, the temperature is increased. May cause deterioration. As a result, uniform brightness cannot be obtained over the entire display screen. On the other hand, when a space is provided in the container substrate 20 and the organic EL light emitting surface 1 as shown in FIG. Is not localized, and can prevent partial deterioration of luminance.

  In the present embodiment, the outer surfaces of the external extraction terminals 14a to 14e are surrounded by the insulators 30a to 30e. The insulators 30a to 30e use a material that blocks moisture and gas, thereby preventing moisture and gas from penetrating into the container substrate 20 from the external lead terminals 14a to 14e. As a result, the luminance is not deteriorated and a long life is achieved. That is, it is possible to suppress the power input for increasing the luminance, and to realize low power consumption.

  In the present embodiment, as an example, there are 10 transparent electrodes 4a to 4e in the vertical direction of the small organic EL light emitting surfaces 3a to 3e and 5 small organic EL light emitting surfaces 3a to 3e. As described above, the small organic EL light emitting surfaces 3a to 3e may be divided into 5 or more or 5 or less, and the transparent electrodes 4a to 4e may be 10 or more in the vertical direction, or 10 Even if it is below, the effect is not changed.

  Further, even if a method using a color conversion layer or a color filter method for producing a full color using an organic light emitting layer of blue or white, the effect is not changed. Even if it is a monochrome organic EL panel which does not perform color display, the effect does not change.

Embodiment 2
Another embodiment of the PM type organic EL panel of the present invention will be described with reference to FIG.

  FIG. 10 shows a cross-sectional structure in which a container substrate 20 is bonded to the organic EL light emitting surface 1. 10 shows an enlarged view of the transparent electrodes 4c and 4d corresponding to FIG. 7, but the other transparent electrodes 4a to 4b and 4e (not shown) have the same structure. It shall be. The container substrate 20 is bonded to the transparent substrate 2 so that water and gases do not enter the panel from the outside. The container substrate 20 and the transparent substrate 2 are bonded together so that a scanning signal can be applied to the metal electrode 8 on the transparent substrate 2 and a data signal can be applied to the external extraction terminals 14 a to 14 e provided on the container substrate 20. Here, the container substrate 20 and the transparent substrate 2 are bonded together so that the external extraction terminals 14a to 14e are electrically connected to the data signal application terminals 13a to 13e. Thereby, since the scanning signal and the data signal are applied to the transparent electrodes 4a to 4e and the metal electrode 8, light emission from the organic EL light emitting layers 5, 6, and 7 occurs normally. In-panel front end portions 31b to 31c at the front end portions of the second external lead-out terminals 21b and 21c are regions that do not contribute to light emission between one pixel line and one pixel line inside one transparent electrode 4b and 4c. By the way, it is electrically connected by crimping or a conductive adhesive. The external lead terminals 14b and 14c and the second external lead terminals 21b and 21c are connected by the second lead wires 22b and 22c on the outer surface of the container substrate 20. By using a low resistance for the second lead wires 22b and 22c, even if the resistance value of the transparent electrodes 4b and 4c is large, the resistance of the transparent electrodes 4b and 4c can be reduced equivalently. This can reduce the power consumption due to the resistance components of the transparent electrodes 4b and 4c, so that low power consumption can be realized.

1 is a top view of an organic EL light emitting surface configured by arranging a plurality of small organic EL light emitting surfaces according to Embodiment 1 of the present invention. FIG. It is a figure corresponding to arrow AA of FIG. It is the figure which expanded the part of B of FIG. FIG. 2 is a top view in which a container substrate is bonded to the top surface of the transparent substrate shown in FIG. 1. It is a figure corresponding to arrow CC of FIG. It is the figure which mounted the drive circuit on the container board | substrate shown in FIG. It is a figure corresponding to the arrow DD of FIG. It is the figure which expanded the part of E of FIG. It is the figure which expanded the part of F of FIG. It is a cross-sectional structure in which a container substrate is bonded to the organic EL light emitting surface. It is a top view of the conventional organic EL. It is a figure corresponding to the arrow YY of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Organic EL light emission surface, 2 Transparent substrate, 3a-3e Small organic EL light emission surface, 4a-4e Transparent electrode, 5 Red organic light emitting layer, 6 Green organic light emitting layer, 7 Blue organic light emitting layer 8 Metal electrode, 10 pixel width , 11 width, 12 gap, 13a to 13e data signal application terminal, 14a to 14e external extraction terminal, 15 conductive resin, 16 lead wire,
17a to 17e Desiccant, 18a to 18e Driving IC, 19b to 19c Front end of panel, 20 Container substrate, 21b, 21c Second external lead terminal, 22b, 22c Second lead wire, 30b, 30c Insulator, 31b ~ 31c Panel tip.

Claims (6)

An EL substrate in which a plurality of small organic EL panels are formed on a single transparent substrate; a single container substrate provided at a position opposite to the EL substrate and having a size corresponding to the single transparent substrate; With
The one container substrate is provided with an external extraction terminal for electrical connection with the electrode of the small organic EL panel, and a space is provided between the small organic EL panel and the one container substrate. And a passive matrix organic EL panel in which a desiccant is provided in the space. The small organic EL panel is composed of n pixels × m lines, and the number of external extraction terminals provided corresponding to the electrodes of the small organic EL panel is at least an integer multiple of n, or m. The passive matrix organic EL panel according to claim 1, which is an integer multiple. The external takeout terminal is manufactured by providing a through hole in the one container substrate and filling the through hole with a conductive resin, and the outer surface of the single takeout substrate of the external takeout terminal is insulated. 2. The passive matrix type organic EL panel according to claim 1, wherein the passive matrix type organic EL panel is surrounded by an object and an inner tip portion of the one container substrate is electrically connected to the small organic EL panel. The organic EL panel according to claim 3, wherein a conductive resin is provided at an inner front end portion of the container substrate. The organic EL panel according to claim 3, wherein an inner front end portion of the container substrate is made of a metal surface. In the external extraction terminal provided corresponding to the small organic EL panel, each external extraction terminal in the horizontal or vertical direction outside the one container substrate is electrically connected. The passive matrix type organic EL panel according to claim 1.

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