JP2014235790A - Organic el display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an organic EL display device that enables both a unique design and a cost reduction by a large quantity with fewer types, which makes it possible to cope with a small quantity with more types.SOLUTION: A display panel 5 comprises a three-layer structure comprising: an organic EL panel 21 that is made from an organic EL material and emits light from itself by supply of power; a design plate 22 that is arranged in front of the organic EL panel 21 in layers and partially has design parts 24 that are open for forming a specific design by light passed to the front of the organic EL panel 21; and a polarization plate 23 that is arranged in front of the design plate 22 in layers. Simply by suitably modifying the open position of the design parts 24 of the design plate 22 and the shape of the design(the open shape), various designs can be achieved. As a result, both a unique design and a cost reduction by a large quantity with fewer types, which makes it possible to cope with a small quantity with more types.

Description

  The present invention relates to an organic EL display device including an organic EL panel made of an organic EL (electroluminescence) material.

Conventionally, as a display meter for vehicles, for example, as disclosed in Patent Document 1, there is a mechanical meter using an LED as a light source and a pointer. In this mechanical meter, various design properties are realized by individually developing structural members (circuit boards, optical members, dials, and in some cases, small LCDs) depending on the vehicle type. On the other hand, as disclosed in Patent Document 2, for example, a display meter that uses an LCD on the entire display area has been proposed. In this display meter, a variety of design characteristics can be obtained by changing the display on the LCD. Realized.
By the way, the above-mentioned mechanical meter has the subject that the variation of a structural member increases because the design changes with vehicle models, and it becomes a small number of many kinds and increases cost. In addition, the display meter only needs to change the display on the LCD, but since the entire display area is composed of the LCD display, the pointer cannot be used, and there is a problem that the degree of freedom in design is limited.

JP2012-122822A JP 2011-123406 A

  An object of the present invention is to provide an organic EL display device that can achieve both a low cost by realizing a unique design property and a large quantity and a small variety of products that are compatible with a small amount and a variety of products.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the organic EL display device of the present invention is
An organic EL panel (21) that is made of an organic EL material and emits light by power supply;
A design plate in which a design portion (24) that is laminated on the front surface of the organic EL panel and forms a predetermined design by passing light of the organic EL panel forward is partially opened ( 22)
A display panel (5) having a three-layer structure including a polarizing plate (23) laminated on the front surface of the design plate is provided.

  In this way, by configuring the display panel with a three-layer structure of an organic EL panel, a design plate, and a polarizing plate, simply changing the opening position of the design portion in the design plate and its design shape (opening shape), Various design properties can be realized. As a result, it is possible to achieve both a unique design and a reduction in cost by realizing a large quantity and a small variety corresponding to a small quantity and a variety.

The disassembled perspective view which shows the display meter for vehicles as an organic electroluminescent display apparatus in one Embodiment of this invention. The disassembled perspective view which shows the organic electroluminescent panel which comprises the display panel of the display meter for vehicles. The longitudinal cross-sectional view which shows an organic electroluminescent panel. The front view which shows an organic electroluminescent panel and the circuit board attached to it. The rear view which shows the step motor attached to the back surface of an organic electroluminescent panel. The side view which shows the step motor attached to the back surface of an organic electroluminescent panel. The longitudinal cross-sectional view which shows the motor shaft of the step motor which penetrates the shaft insertion hole of a display panel, and the pointer attached to the front-end | tip. The longitudinal cross-sectional view which shows the design part provided in the display panel. The front view which shows the display meter for vehicles. The front view which shows the display meter for vehicles of the modification 1. FIG. The front view which shows the display meter for vehicles of the modification 2. FIG.

  Hereinafter, an embodiment of the organic EL display device of the present invention will be described with reference to the drawings. In the following description, a case where the organic EL display device according to the present invention is applied to a display meter for a vehicle will be exemplified. As shown in FIG. 1, the vehicle display meter 1 includes a lower case 2, two step motors 3 (motor of the present invention), two step motors 3 individually from the dashboard side of the vehicle to the driver side. Two corresponding reinforcing plates 4, display panels 5, two stepping motors 3, two pointers 6 corresponding to each step, and a front cover 7 are sequentially arranged, and these are integrally assembled.

  The lower case 2 and the front cover 7 are each formed of a resin material, and the step motor 3, the reinforcing plate 4, the display panel 5, and the pointer 6 are housed in the housing space 10 formed between the members 2 and 7. Display meter 1 is unitized and attached to the vehicle. The lower case 2 and the front cover 7 are fixed to each other by screws or fittings. The front cover 7 is formed with an opening 7a that allows the display area 5a of the display panel 5 to be visually recognized over the entire surface.

  A transparent smoke plate 8 that covers the entire display area 5a of the display panel 5 from the front is attached to the opening 7a of the front cover 7. As a result, the display area 5 a of the display panel 5 is viewed by a viewer such as a driver via the smoke plate 8. The smoke plate 8 has a light attenuating function and prevents reflection by external light, thereby improving the visibility of the display panel 5.

  The display panel 5 is made of an organic EL material and is laminated on the front surface of the organic EL panel 21 (the surface on the viewer side), which is self-luminous by supplying power, and the light of the organic EL panel 21 From a three-layer structure of a design plate 22 in which a design part 24 for forming a predetermined design by passing light forward is partially opened and a polarizing plate 23 laminated on the front surface of the design plate 22 Thus, the display area 5 a of the display panel 5 constitutes the entire display area of the vehicle display meter 1.

  As shown in FIGS. 2 and 3, the organic EL panel 21 has a transparent substrate 31, a transparent electrode 32, an organic layer 33, a back electrode 34, and a back substrate 35 from the front side, that is, the viewer side to the back side. Are sequentially stacked. The transparent substrate 31 and the back substrate 35 are each made of a glass material. The transparent electrode 32 is made of a transparent electrode material such as ITO (indium / tin / oxide) and constitutes a cathode of the organic EL panel 21. The organic layer 33 is formed by laminating an electron transport layer 33a, a light emitting layer 33b, and a hole transport layer 33c from the transparent electrode 32 side toward the back electrode 34 side. The back electrode 34 is made of a metal such as Al that blocks visible light, and constitutes the anode of the organic EL panel 21. Further, a TFT (thin film transistor) 36 serving as an organic EL display element is connected to the back electrode 34, and a wiring pattern 13 described later is connected to the TFT 36.

  As shown in FIG. 4, the transparent electrode 32, the organic layer 33, and the back electrode 34 that constitute the organic EL panel 21 are provided only in predetermined light emitting areas A <b> 1 to A <b> 3, and a sealing material 37 is provided in other areas. Is provided to form an airtight space. In this embodiment, the case where three light emitting areas A1 to A3 having different light emission colors are set in the organic EL panel 21 is exemplified, but the setting of the light emitting areas is not limited to this.

  The organic layer 33 arranged in a state sandwiched between the transparent electrode 32 and the back electrode 34 emits light from the light emitting layer 33b by applying a voltage between the electrodes 32 and 34. Light from the organic layer 33 passes through the transparent electrode 32 and the transparent substrate 31 and is extracted to the front of the organic EL panel 21, that is, to the design plate 22 side. The design portion 24 of the design plate 22, the polarizing plate 23, and the front cover 7 through the smoke plate 8 and viewed by a viewer. The polarizing plate 23 laminated on the front surface of the design plate 22 prevents light reflection by the back electrode 23 of the organic EL panel 21.

  In the present embodiment, the transparent substrate 31 and the back substrate 35 constituting the organic EL panel 21 are each formed of a glass material. However, the present invention is not limited to this. The transparent substrate 31 may be a resin material or the like as long as it is a transparent material that can transmit light from the organic layer 33 (the light emitting layer 33b). The back substrate 35 is not limited to a transparent material, and may be an opaque resin material or the like.

  A circuit board 9 that drives and controls the display panel 5 (the organic EL panel 21 and the step motor 3) is electrically connected to the organic EL panel 21 via the flexible aggregated wiring 11. The terminal of the flexible aggregated wiring 11 is detachably attached to the flexible aggregated wiring connector 12 provided at the lower end of the organic EL panel 21. On the back surface of the organic EL panel 21, as shown in FIGS. 5 and 6, a wiring pattern 13 for connecting the flexible aggregated wiring connector 12 and the back electrode 34 of the organic EL panel 21 (first wiring pattern of the present invention). And the solder connection part 14 is formed, and the wiring pattern 15 (second wiring pattern of the present invention) for connecting the flexible aggregate wiring connector 12 and the step motor 3 and the solder connection part 16 are formed.

  The step motor 3 is attached to the back surface of the display panel 5 via the reinforcing plate 4. As shown in FIG. 7, the motor shaft 3 a of the step motor 3 is arranged through a shaft insertion hole 4 a formed in the reinforcing plate 4 and a shaft insertion hole 5 b formed through the display panel 5. The tip of the motor shaft 3a that is inserted in the holes 4a and 5b and disposed on the front surface of the display panel 5 is attached to the pointer 6 integrally. The pointer 6 is provided so as to be rotatable with respect to the display panel 5 based on the driving of the step motor 3, and indicates the vehicle speed and the like.

  As shown in FIG. 8, the design plate 22 is provided with a design portion 24 that transmits light extracted from the organic EL panel 21 and sends it to the polarizing plate 23 in a predetermined design shape. As shown in FIG. 9, the design unit 24 displays direction indication units 24 a and 24 b indicating left and right turns of the vehicle, a high beam display unit 24 c indicating that the headlamp of the vehicle is in a high beam state, and displays a warning when an abnormality occurs. A warning display unit 24d, a tachometer scale unit 24e for displaying the engine speed of the vehicle, and a speedometer scale unit 24f for displaying the vehicle speed are provided.

  The direction indicating units 24a and 24b and the high beam display unit 24c correspond to the light emitting area A1 of the organic EL panel 21, thereby passing the light extracted from the light emitting area A1 to form a design. The warning display unit 24d corresponds to the light emitting area A2 of the organic EL panel 21 and passes the light extracted from the light emitting area A2, thereby forming a design. The tachometer scale part 24e and the speedometer scale part 24f correspond to the light emission area A3 of the organic EL panel 21, and pass the light extracted from the light emission area A3 to form a design. The dial part of the invention is configured.

  In the light emitting area A3 of the organic EL panel 21, shaft insertion holes 5b through which the motor shaft 3a of the above-described step motor 3 is inserted are formed at positions corresponding to the meter scale portions 24e and 24f. And the step motor 3 attached to the position corresponding to the tachometer scale part 24e drives the pointer 6 according to the measured amount data of the engine speed, thereby indicating the engine speed of the vehicle to the tachometer scale part 24e. The step motor 3 attached at a position corresponding to the speedometer scale 24f drives the pointer 6 according to the measured data of the vehicle speed, thereby indicating the vehicle speed to the speedometer scale 24f.

  By the way, in above-mentioned embodiment, with respect to the setting of light emission area A1-A3 in the organic electroluminescent panel 21 shown in FIG. 4, the design part 24 (direction instruction | indication part 24a, 24b, high beam of the design plate 22 shown in FIG. Although the display unit 24c, the warning display unit 24d, the tachometer scale unit 24e, and the speedometer scale unit 24f) are provided, the vehicle display meter 1 in which two pointers 6 are arranged on the display panel 5 is configured. The organic EL panel 21 on which the light emitting areas A1 to A3 are set can be used as they are, and a design meter to be opened on the design plate can be changed to constitute a vehicle display meter with different design characteristics. it can.

  Hereinafter, the display meters for vehicles of the modifications 1 and 2 having different design properties will be described. In addition, in the following description, the same code | symbol is attached | subjected about the structural member similar to the display meter 1 for vehicles, and the description is abbreviate | omitted. First, the display meter 40 for vehicles of the modification 1 shown in FIG. 10 is demonstrated. The design plate 41 constituting the vehicle display meter 40 includes direction indicating portions 41a and 41b corresponding to the light emitting area A1 of the organic EL panel 21, a warning display portion 41c corresponding to the light emitting area A2 of the organic EL panel 21, and organic A speedometer scale 41d corresponding to the light emitting area A3 of the EL panel 21 is provided, and a pointer 6 is disposed on the speedometer scale 41d. That is, the vehicle display meter 40 according to the first modification has one mechanical meter mechanism (pointer 6 and step motor 3) provided corresponding to the speedometer scale 41d without providing a tachometer scale as a meter scale. ) Is only used for meter display.

  Next, the display meter 50 for vehicles of the modification 2 shown in FIG. 11 is demonstrated. The design plate 51 constituting the vehicle display meter 50 includes direction indicating portions 51a and 51b corresponding to the light emitting area A1 of the organic EL panel 21, a warning display portion 51c corresponding to the light emitting area A2 of the organic EL panel 21, and organic A tachometer scale 51d, a speedometer scale 51e, a charge amount display 51f, and a mode display 51g corresponding to the light emission area A3 of the EL panel 21 are provided, and a pointer 6 is disposed on each meter scale 51d, 51e. The Note that a vehicle-mounted storage battery (not shown) is mounted on the vehicle on which the vehicle display meter 50 is mounted. And the charge amount of a vehicle-mounted storage battery is displayed by the digital display of the band graph by the charge amount display part 51f. In addition, the mode display unit 51g displays a control mode related to the charge / discharge plan of the in-vehicle storage battery. That is, the vehicle display meter 50 according to the second modification has a specification in which meter display is performed by digital display of the charge amount display unit 51f in addition to analog display of the meter scale units 51d and 51e.

  By the way, the vehicle display meters in the embodiments including the first and second modifications are both configured to include an analog display provided with a mechanical meter mechanism (the pointer 6 and the step motor 3), but are not necessarily limited to this configuration. Is not to be done. That is, the specification may be such that all meter displays such as a tachometer and a speedometer are digitally displayed without providing a mechanical meter mechanism.

  As described above, according to the vehicle display meter 1 of the present embodiment, the organic EL panel 21 that is made of an organic EL material (organic layer 33) and emits light by power supply is provided on the front surface of the organic EL panel 21. A design plate 22 that is laminated and partially opens a design portion 24 that forms a predetermined design by passing light of the organic EL panel 21 forward, and the front surface of the design plate 22 The display panel 5 having a three-layer structure including a polarizing plate 23 stacked on the display panel 5 is provided.

  In this way, by configuring the display panel 5 with the three-layer structure of the organic EL panel 21, the design plate 22, and the polarizing plate 23, the opening position of the design portion 24 in the design plate 22 and the design shape (opening shape) thereof are determined. Various design properties can be realized only by making appropriate changes. As a result, it is possible to achieve both a unique design and a reduction in cost by realizing a large quantity and a small variety corresponding to a small quantity and a variety.

  The display panel 5 constitutes the entire display area of the vehicle display meter 1. Thereby, since all the design properties of the display meter 1 for vehicles can be varied only by changing the design part 24 of the design plate 22, a further increase in the number of products can be promoted.

  The motor shaft 3 a is attached to the back surface of the organic EL panel 21, and the motor shaft 3 a is disposed through the shaft insertion hole 5 b formed through the display panel 5. The design portion 24 includes a dial portion (a tachometer scale portion 24e and a speedometer scale portion 24f) indicated by the pointer 6. Thereby, the variation of a structural member can be reduced, implement | achieving various meter designs using the pointer | guide 6. FIG.

  The step motor 3 is attached to the back surface of the organic EL panel 21 via the reinforcing plate 4. Thereby, the attachment intensity | strength of the step motor 3 with respect to the organic electroluminescent panel 21 can be improved.

  A circuit board 9 for driving and controlling the display panel 5 and a flexible aggregated wiring 11 connected to the circuit board 9 and detachably attached to a flexible aggregated wiring connector 12 provided on the organic EL panel 21 are provided. Thereby, the circuit board 9 can be easily attached to and detached from the display panel 5. For this reason, in the display panel 5 that realizes various design properties, the circuit board 9 that drives and controls the display panel 5 can be easily replaced with those of various specifications. However, the vehicle display meter 1 can be diversified.

  On the back surface of the organic EL panel 21, a first wiring pattern 13 that connects the organic EL panel 21 and the flexible aggregated wiring connector 12, a step motor 3 attached to the back surface of the organic EL panel 21, and a flexible aggregated wiring connector The circuit board 9 controls the light emission of the organic EL panel 21 and the drive of the step motor 3. Thereby, the display meter 1 for vehicles can be diversified also with respect to the functionality of the meter using the pointer 6.

  The organic EL panel 21 includes a plurality of light emitting areas A1 to A3 having different emission colors, and a design portion 24 of the design plate 22 is established in correspondence with the plurality of light emitting areas A1 to A3. Thereby, since the design of the display panel 5 which the design part 24 forms can be comprised variously by multiple colors, the designability of the display panel 5 can be improved.

  A front cover 7 is provided that has an opening 7a that is disposed in front of the display panel 5 and that allows the entire display area of the display panel 5 to be visually recognized. The opening 7a has a light attenuation function and is externally provided. A smoke plate 8 for preventing reflection by light is attached. Thereby, the visibility of the display panel 5 from the viewer side such as a driver can be improved.

  A lower case 2 that unitizes the vehicle display meter 1 by housing the display panel 5 in a housing space 10 formed between the front cover 7 and the front cover 7 is provided. As a result, the vehicle display meter 1 that accommodates the display panel 5 in the housing space 10 between the front cover 7 and the lower case 2 is unitized, so that the vehicle display meter 1 is attached to and detached from the vehicle. Workability can be improved.

  Although the embodiment of the present invention has been described above, this is merely an example, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the claims. . For example, in the configuration in the embodiment, three light emitting areas A1 to A3 having different emission colors are set in the organic EL panel 21, but the present invention is not limited to this configuration, and an organic EL display device (display panel). The design can be changed as appropriate according to the design properties. Also in this case, various design properties can be realized by variously changing the design portion of the design plate that passes the light from the light emitting area to the viewer side. However, since the purpose is to realize a large number of products, it is necessary to assume that the light emitting area of the organic EL panel 21, that is, the light emitting pattern of the display panel 5, is a pattern that includes all vehicle types.

  Further, in the present embodiment, the entire display area of the vehicle display meter 1 is configured by the display area 5a of the display panel 5. However, the present invention is not limited to this configuration, and a part of the display area of the vehicle display meter is used. You may make it comprise with the display panel which concerns on invention. In the embodiment, the organic EL panel is composed of a transparent substrate, a transparent electrode, an organic layer, a back electrode, and a back substrate. Good. Further, in order to improve the visibility of the display panel, a smoke plate having a light attenuation function is provided in front of the display panel, but it is not always necessary to provide the smoke plate. In this case, the polarizing plate constituting the display panel functions in the same manner as the smoke plate to prevent reflection by external light. Furthermore, the organic EL display device of the present invention can be applied to a display device other than a vehicle display meter.

1 Vehicle display meter (organic EL display device)
2 Lower case 3 Step motor (motor)
4 Reinforcing plate 5 Display panel 5a Display area 5b Shaft insertion hole 6 Pointer 7 Front cover 7a Opening portion 8 Smoke plate 9 Circuit board 10 Housing space 11 Flexible aggregate wiring 12 Flexible aggregate wiring connector 13 Wiring pattern (first wiring pattern)
15 Wiring pattern (second wiring pattern)
21 Organic EL panel 22 Design plate 23 Polarizing plate 24 Design part 24e Tachometer scale part (Dial part)
24f Speedometer scale (dial)
33 Organic layer (organic EL material)
A1 to A3 light emitting area

Claims (10)

An organic EL panel (21) made of an organic EL material (33) and self-luminous by power supply;
A design plate in which a design portion (24) that is laminated on the front surface of the organic EL panel and forms a predetermined design by passing light of the organic EL panel forward is partially opened ( 22)
An organic EL display device comprising a display panel (5) having a three-layer structure including a polarizing plate (23) laminated on the front surface of the design plate.   The organic EL display device according to claim 1, wherein the display panel constitutes an entire display area of the organic EL display device. A motor (3) that is attached to the back surface of the organic EL panel and in which a motor shaft (3a) is disposed through a shaft insertion hole (5b) formed through the display panel;
A pointer (6) disposed on the front surface of the polarizing plate and integrally attached to the motor shaft,
The organic EL display device according to claim 1 or 2, wherein the design portion includes a dial portion (24e, 24f) indicated by the pointer.   The organic EL display device according to claim 3, wherein the motor is attached to a back surface of the organic EL panel via a reinforcing plate (4).   A circuit board (9) for driving and controlling the display panel, and a flexible aggregated wiring (11) connected to the circuit board and detachably attached to a flexible aggregated wiring connector (12) provided on the organic EL panel An organic EL display device according to any one of claims 1 to 4, further comprising:   The back surface of the organic EL panel has a first wiring pattern (13) for connecting the organic EL panel and the flexible integrated wiring connector, the motor attached to the back surface of the organic EL panel, and the flexible integrated wiring connector. The organic EL display device according to claim 5, wherein a second wiring pattern (15) is formed to connect the circuit board, and the circuit board controls light emission of the organic EL panel and driving of the motor.   The organic EL panel includes a plurality of light emitting areas (A1 to A3) having different emission colors, and a design portion of the design plate is established corresponding to the plurality of light emitting areas. 2. The organic EL display device according to item 1.   A front cover (7) having an opening (7a) which is disposed in front of the display panel and which allows the display area of the display panel to be fully visible is provided, and the opening has a light attenuation function. The organic EL display device according to any one of claims 1 to 7, further comprising a smoke plate (8) for preventing reflection by external light.   The organic EL display device according to claim 8, further comprising a lower case (2) that unitizes the organic EL display device by housing the display panel in a housing space (10) formed between the front cover and the front cover.   The organic EL display according to any one of claims 1 to 9, wherein the organic EL display device is a vehicle display meter (1) mounted on a vehicle and visually observed when a driver drives the vehicle. apparatus.

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