JP2003029240A - Image display device, driving method therefor and selective display method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device which realizes high display quality without lowering contrast, brightness, color reproducing range and the like depending on the condition of external light, the kind of an image and the like by eliminating the problem of a conventional liquid crystal display device. SOLUTION: The image display device has a light emitting material part 3 constituted of an organic compound and a liquid crystal material part 4 lying between a pair of substrates 1 and 2. It can be selected as the occasion demands whether display is performed by using the light emitting material part 3 or the liquid crystal material part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device used in a mobile phone, a personal digital assistant, etc., a driving method thereof and a selective display method thereof, and more specifically, a liquid crystal display device and an organic electroluminescence device (organic device). The present invention relates to an image display device using an EL element, a driving method thereof, and a selective display method thereof.

[0002]

2. Description of the Related Art CRTs, liquid crystal display devices and the like are widely known as image display devices, but among them, there is a great interest in liquid crystal display devices that are portable and can save space. Liquid crystal display devices that have high brightness and low power consumption are required. In response to such demands, external light such as sunlight and illumination light is reflected by a reflector,
A method of controlling light by a liquid crystal material (reflection type liquid crystal display device) has become widespread, but in many cases, an auxiliary light source is used so that it can be used even in an environment where external light is scarce. Among them, the method with a front light unit (front light method) and the method with a back light unit (backlight method) are currently mainstream.

Here, the front light system uses a structure in which a front light unit including a light guide plate and a light source, a liquid crystal material portion, and a reflection plate are laminated in this order,
When the external light is scarce, the illumination light from the front light unit is reflected by a reflector, and the reflected light is controlled by the behavior of the liquid crystal material according to the applied voltage to display an image. On the other hand, the backlight system has a structure in which a liquid crystal material part, a reflector having a transmissive part and a reflective part (semi-transmissive semi-reflective plate), and a backlight unit are laminated in this order from the display surface side. When the external light is scarce, the illumination light from the backlight unit is transmitted through the semi-transmissive and semi-reflective plate, and the transmitted light is controlled by the behavior of the liquid crystal material according to the applied voltage to display an image. Is.

[0004]

However, both types, which are currently mainstream, have the following problems. First of all, in the front light system, when the front light is lit,
Since light is emitted to the front and the rear of the light guide plate, there are problems that the contrast is lowered and the image is whitened.

On the other hand, in the backlight system, since the optical path length in the liquid crystal material portion is different when the backlight is lit and when it is not lit, the modulation rate cannot be made equal in the transmissive mode and the reflective mode. However, there is a problem that the contrast is lowered in any mode. In order to solve this problem, it has been proposed to introduce a multi-gap structure in which the thickness of the liquid crystal material part is different between the transmissive part and the reflective part. Since the structure is a phase difference plate, there is a problem that the brightness is not sufficient. Further, since the same color filter is used in the transmission mode and the reflection mode in color display, there is a problem that the color reproduction range is biased to either mode.

Further, the auxiliary light source used as a front light or a back light consumes a large amount of power, and when used in a portable device such as a portable information terminal or a portable telephone, the operation time thereof is shortened.

Furthermore, since the liquid crystal display devices that are currently in widespread use have a slower response speed than image display devices such as CRTs, there is a problem that afterimages are easily visible when a moving image is displayed.

The present invention has been made in view of the above circumstances, and an object thereof is to solve the problems of the conventional liquid crystal display device, and to improve the contrast, brightness, An object of the present invention is to provide an image display device, a driving method thereof, and a selection display method thereof, which realize a high display quality without deteriorating the color reproduction range and the like.

[0009]

In order to solve the above-mentioned problems, an image display device according to claim 1 is provided with a plurality of substrates having electrodes formed on their surfaces, which are arranged so as to face each other. It is characterized in that it has a light emitting material portion composed of an organic compound and a liquid crystal material portion interposed between the plurality of substrates.

As described above, if the self-luminous light emitting material portion and the non-self-luminous liquid crystal material portion are installed in one device, the light emitting material portion may display an image depending on the case. Alternatively, the liquid crystal material section can display an image. As a result, the display quality does not deteriorate depending on the external light conditions, the type of image and the like. That is, by selecting an appropriate display mode depending on the case, it is possible to perform image display with good contrast, bright brightness, and wide color reproduction range. Further, in this device, a backlight is not required when driving the light emitting material portion, so that it is possible to reduce the power consumption of the entire device.

Here, "interposed between a plurality of substrates" may mean that the liquid crystal material portion and the light emitting material portion are present in the same gap (formed by a plurality of substrates), or This means that when there are a plurality of gaps, they may exist in different gaps.

An image display device according to a second aspect is the image display device according to the first aspect, wherein a drive circuit is formed on a surface of any one of the plurality of substrates. It is characterized by

If the drive circuit is formed on only one substrate as in the above structure, it is advantageous in terms of manufacturing efficiency.
In particular, if it is formed on the same substrate as the TFT, the metal wiring, etc., the effect is greater.

According to another aspect of the image display device of the present invention, a first substrate having an electrode formed on a surface thereof, a second substrate opposite to the first substrate having an electrode formed on the surface thereof, and First
It is characterized in that it has a light emitting material part and a liquid crystal material part made of an organic compound, which are interposed between the substrate and the second substrate in a state orthogonal to the facing direction of the both substrates.

By arranging the light emitting material portion and the liquid crystal material portion in parallel between the pair of substrates as in the above structure, it is possible to provide a thin image display device of high display quality with one surface serving as a display surface.

An image display device according to a fourth aspect is the image display device according to the third aspect, wherein a drive circuit is formed on a surface of the first substrate or the second substrate. To do. If the drive circuit is formed only on one substrate as in the above configuration, it is advantageous in terms of manufacturing efficiency. In particular, if it is formed on the same substrate as the TFT, the metal wiring, etc., the effect is greater.

An image display device according to a fifth aspect of the present invention is the image display device according to the third aspect, wherein a liquid crystal material is driven on a portion of the surface of the first substrate or the second substrate corresponding to the liquid crystal material portion. Active elements for light emitting material are arranged in a row direction and a column direction, and active elements for driving a light emitting material are arranged in a row direction at a portion corresponding to the light emitting material portion on the surface of the first substrate or the second substrate. And are arranged in a row.

If the active matrix element is used for the light emitting material section and the active matrix element is used for the liquid crystal material section and both parts are driven by active matrix driving as in the above-mentioned structure, the response speed, the viewing angle, An image display device having better contrast and the like can be provided.

An image display device according to a sixth aspect is the image display device according to the third aspect, in which electrodes formed on portions of the surfaces of the first substrate and the second substrate corresponding to the liquid crystal material portion are provided. Both are stripe-shaped electrodes, and the respective stripe-shaped electrodes are arranged so that their longitudinal directions intersect with each other in a state of facing each other, and correspond to the light emitting material portions on the surfaces of the first substrate and the second substrate. The electrodes formed in the portions are both stripe-shaped electrodes, and the stripe-shaped electrodes are arranged so that their longitudinal directions intersect with each other in a state of facing each other.

As in the above structure, a stripe-shaped electrode is used for the light-emitting material portion and a stripe-shaped electrode is also used for the liquid crystal material portion, and both parts can be driven by simple matrix driving to display a good image. You can Since such an image display device can be manufactured at a lower cost than an image display device using a switching element such as a TFT, an inexpensive product can be provided.

An image display device according to a seventh aspect is the image display device according to the third aspect, wherein a liquid crystal material is driven on a portion of the surface of the first substrate or the second substrate corresponding to the liquid crystal material portion. Active elements are arranged in rows and columns, and the electrodes formed on the portions of the surfaces of the first substrate and the second substrate corresponding to the light emitting material portions are both striped electrodes. The striped electrodes are arranged so that their longitudinal directions intersect with each other while facing each other.

As described above, even if the active matrix element is used for the liquid crystal material portion and the striped electrode is used for the light emitting material portion so that both portions are driven by different driving methods, a high display quality image is obtained. It becomes a display device.

An image display device according to an eighth aspect is the image display device according to the third aspect, wherein the electrodes are formed on portions of the surfaces of the first substrate and the second substrate corresponding to the liquid crystal material portion. Are striped electrodes, and the striped electrodes are arranged so that their longitudinal directions intersect with each other while facing each other.
Active elements for driving the light emitting material are arranged in a row direction and a column direction in a portion corresponding to the light emitting material portion on the surface of the substrate or the second substrate.

Even if both portions are driven by different driving methods by using the stripe-shaped electrode for the liquid crystal material portion and the active matrix element for the light emitting material portion as in the above structure, an image of high display quality is obtained. It becomes a display device.

It is preferable to use a thin film transistor element or a thin film diode element as the active element. If these are used as switching elements, precise control can be performed for each pixel, so that an image with high display quality can be displayed.

The image display device according to claim 11 is the image display device according to claim 3, wherein the image display device is provided between the first substrate or the second substrate and the light emitting material portion and / or the liquid crystal material portion. , A reflector is arranged. By arranging the reflection plate in this way, external light can be used, so that it is possible to provide an image display device that realizes lower power consumption. In particular,
By using a light-scattering reflector, it is possible to prevent external light from being reflected on the display surface and making the image display difficult to see.

An image display device according to a thirteenth aspect is the image display device according to the third aspect, wherein the electrodes arranged on the surface of the first substrate or the second substrate have light reflectivity. It is characterized by being When an electrode having light reflectivity is used as the electrode as described above, it is not necessary to separately dispose a reflection plate, so that the image display device is thin and has low power consumption. In particular, if a reflective electrode having a light-scattering property is used, it is possible to prevent external light from being reflected on the display surface and making the image display by the liquid crystal material portion difficult to see.

An image display device according to a fifteenth aspect is the image display device according to the third aspect, characterized in that the liquid crystal material portion and the light emitting material portion are separately sealed. If they are separately sealed as described above, the other does not affect the driving of one, so that the liquid crystal material portion and the light emitting material portion are driven independently of each other.

An image display device according to a sixteenth aspect is the image display device according to the third aspect, wherein the liquid crystal material portion and the light emitting material portion are sealed in a state of being in contact with each other. To do. With such a seal, since there is no non-display portion derived from the seal portion on the display surface,
Images can be displayed on a large screen.

An image display device according to a seventeenth aspect is the image display device according to the third aspect, wherein the light emitting material portion and the liquid crystal material portion are present for each display unit. . When the light emitting material portion and the liquid crystal material portion independently form one screen in this manner, it is possible to provide an image display device that displays, for example, a moving image in the light emitting material portion and a still image in the liquid crystal material portion. . The image display device can also be used in a mode in which both the light emitting material portion and the liquid crystal material portion are driven to display one type of image. Here, the display unit refers to a size that allows an observer to recognize the image displayed on the display surface.

The image display device according to claim 18 is the image display device according to claim 3, wherein the light emitting material portion and the liquid crystal material portion are present in a check pattern for each unit pixel. Characterize. When the light emitting material portion and the liquid crystal material portion are distributed in a check pattern in this manner, a large image can be displayed even if only one of them displays an image. Here, the unit pixel means a portion having independent information.

An image display device according to claim 19 is the image display device according to any one of claims 1 to 18, wherein the light emitting material portion is driven to display an image, or It is characterized by comprising an automatic selection means for automatically selecting whether to display an image by driving the liquid crystal material portion.

If the apparatus has the light emitting material portion and the liquid crystal material portion and the automatic selecting means is provided as in the above-mentioned structure, the observer can observe the external light condition, the type of the image, etc. You can easily see the image that corresponds to.

An image display device according to a twentieth aspect is the image display device according to the nineteenth aspect, wherein the automatic selection means detects external light for detecting the amount of external light reaching the display surface. Section, and an automatic switch section for automatically switching between driving of the light emitting material section and driving of the liquid crystal material section according to the detection result of the external light detecting section.

If the image display device is provided with the automatic selection means using the light quantity of the external light as an index as in the above-mentioned constitution, it is possible to easily see the high-quality image corresponding to the external light condition. .

The image display device according to claim 21, wherein the automatic selection means is an image identification section for identifying whether the automatic selection means is a moving image or a still image. An automatic switch unit for automatically switching between driving the light emitting material portion and driving the liquid crystal material portion according to the discrimination result of the image discriminating portion.

An image display device having an automatic selection means for selecting whether to drive an image by driving the liquid crystal material portion or an image by driving the light emitting material portion with the image information as an index, as in the above-mentioned configuration. In this case, each part can display an image that each part is good at, so that the image display device has high quality. Specifically, the light-emitting material portion has a characteristic that the response speed is fast, which is excellent for displaying moving images, and the liquid crystal material portion has a characteristic that the image quality is beautiful, which is excellent for displaying a still image. By displaying a moving image in the light emitting material part and a still image in the liquid crystal material part by the automatic selection means, it is possible to provide an image display device that makes the best use of the characteristics of each part.

According to a twenty-second aspect of the present invention, in the image display device, a first substrate having an electrode formed on a surface thereof, a second substrate opposite to the first substrate having an electrode formed on the surface thereof, It is characterized in that it has a light emitting material part and a liquid crystal material part made of an organic compound, which are interposed between the first substrate and the second substrate in the same direction as the facing direction of the both substrates. .

If the light emitting material section and the liquid crystal material section are installed in the same device in the same direction as the facing direction of the substrate as in the above structure, the display surface is not divided. Unlike the image display device, the display surface does not become small. Further, by selecting an appropriate display mode depending on the external light conditions, the type of image, etc., the image display device can display an image with good contrast, bright color and a wide color reproduction range. Further, in this device, a backlight is not required when driving the light emitting material portion, so that it is possible to reduce the power consumption of the entire device.

An image display device according to a twenty-third aspect is the image display device according to the twenty-second aspect, wherein a drive circuit is formed on the surface of the first substrate or the second substrate. To do. If the drive circuit is formed only on one of the substrates as in the above configuration, it is advantageous in terms of manufacturing efficiency. In particular, if it is formed on the same substrate as the TFT, the metal wiring, etc., the effect is greater.

An image display device according to a twenty-fourth aspect is the image display device according to the twenty-second aspect, wherein active elements are arranged in a row direction and a column direction on the surface of the first substrate or the second substrate. It is characterized by being arranged in a state.

If an active matrix element is used for driving the liquid crystal material portion and the light emitting material portion as in the above structure, the response speed, the viewing angle, the contrast and the like will be better.

An image display device according to a twenty-fifth aspect is the image display device according to the twenty-second aspect, wherein the electrodes formed on the surfaces of the first substrate and the second substrate are both stripe electrodes. And each striped electrode,
It is characterized in that they are arranged so that their longitudinal directions intersect with each other while facing each other.

If the stripe-shaped electrodes are used to drive the liquid crystal material portion and the light emitting material portion as in the above structure, the light emitting material portion and the liquid crystal material portion can perform image display by simple matrix driving. Since such an image display device can be manufactured at a lower cost than an image display device using a switching element such as a TFT, an inexpensive product can be provided.

It is preferable to use a thin film transistor element or a thin film diode element as the active element. When used as these switching elements, precise control can be performed for each pixel, so that an image with high display quality can be displayed.

An image display device according to a twenty-eighth aspect is the image display device according to the twenty-second aspect, wherein the electrode formed on the surface of the first substrate or the second substrate has light reflectivity. It is characterized by being When the electrode having light reflectivity is used as the electrode as described above, it is not necessary to separately dispose the reflection plate, so that the image display device is thin and has low power consumption. In particular, if a reflective electrode having a light-scattering property is used, external light will not be reflected on the display surface and the displayed image will not be difficult to see.

The image display device according to a thirtieth aspect is the image display device according to the twenty-second aspect, characterized in that a reflector is disposed between the light emitting material portion and the liquid crystal material portion. And By arranging the reflection plate in this way, external light can be used when driving the liquid crystal display unit, so that it is possible to provide an image display device that realizes lower power consumption.

An image display device according to a thirty-first aspect is the image display device according to the twenty-second aspect, wherein a reflector is provided between the first substrate or the second substrate and the light emitting material portion or the liquid crystal material portion. Are arranged. Similarly to the above, since external light can be used when driving the liquid crystal display unit, it is possible to provide an image display device that realizes lower power consumption.

An image display device according to a thirty-second aspect is the image display device according to the thirtieth or thirty-first aspect, wherein the reflection plate has a light scattering property. With the light-scattering reflector, it is possible to prevent external light from being reflected on the display surface and making the displayed image difficult to see.

An image display device according to a thirty-third aspect is the image display device according to the thirtieth or thirty-first aspect, wherein the reflection plate has a transmissive portion and a reflective portion. . With such a reflector, it is possible to perform display by the light emitting material portion and display by the liquid crystal material portion on one display surface. In particular, if the reflecting portion has a light-scattering property, it is possible to prevent external light from being reflected on the display surface and making the displayed image difficult to see.

An image display device according to a thirty-fifth aspect is the image display device according to any one of the twenty-second to thirty-fourth aspects, wherein the light emitting material portion is mainly driven to display an image. Alternatively, the liquid crystal material portion is mainly driven, and an automatic selection unit for automatically selecting whether to display an image is provided.

If the apparatus has the light emitting material portion and the liquid crystal material portion and the automatic selecting means is provided as in the above-mentioned structure, the observer can observe the external light condition, the kind of the image, etc. You can easily see the image that corresponds to.

Here, "mainly" takes into consideration that in the present apparatus, one drive may drive the other. That is, “mainly driving the light emitting material portion” means driving by focusing on the light emitting material portion,
At that time, it is assumed that the liquid crystal material section is also being driven at the same time. Similarly, “mainly driving the liquid crystal material portion” means driving by focusing on the liquid crystal material portion, but at that time, it is assumed that the light emitting material portion is also driven. However, it is hard to say that it is preferable that both are driven from the viewpoint of display quality. Therefore, in consideration of the threshold value of the light emitting material or the liquid crystal material, one material should be driven so that the other is not driven as much as possible. It is preferable to make a selection.

The image display device according to a thirty-sixth aspect is the image display device according to the thirty-fifth aspect, wherein the automatic selection means detects the external light for detecting the amount of the external light reaching the display surface. Section, and an automatic switch section for automatically switching between driving of the light emitting material section and driving of the liquid crystal material section according to the detection result of the external light detecting section.

If the image display device is provided with the automatic selection means using the light quantity of the external light as an index as in the above-mentioned constitution, it is possible to easily see a high-quality image corresponding to the external light condition. .

An image display device according to a thirty-seventh aspect is the image display device according to the thirty-fifth aspect, wherein the automatic selection means includes an image identification section for identifying whether the moving image or the still image.
An automatic switch unit for automatically switching between driving the light emitting material portion and driving the liquid crystal material portion according to the discrimination result of the image discriminating portion.

With the image display device having the automatic selection means using the image information as an index as in the above-mentioned structure, it is possible to easily see a high-quality image corresponding to the type of image.

According to a thirty-eighth aspect of the present invention, in the image display device, a first substrate having electrodes formed on its surface and a third substrate having electrodes formed on both sides of the substrate are arranged so as to face the first substrate. Substrate, a second substrate having an electrode formed on the surface thereof, which is arranged so as to face the third substrate, and an organic compound interposed between the first substrate and the third substrate. And a liquid crystal material portion interposed between the third substrate and the second substrate.

If the light emitting material portion and the liquid crystal material portion are installed in one device and each portion is interposed between the separate electrodes as in the above structure, the other influences when driving one. Since it does not occur, the image display device has higher display quality.

An image display device according to a thirty-ninth aspect is the image display device according to the thirty-eighth aspect, wherein the first substrate,
A driving circuit is formed on the surface of the second substrate or the third substrate. If the drive circuit is formed only on one substrate as in the above configuration, it is advantageous in terms of manufacturing efficiency. In particular, if it is formed on the same substrate as the TFT, the metal wiring, etc., the effect is greater.

The image display device described in claim 40 is the image display device described in claim 38, in which active elements are arranged in the row direction and the column direction on the surface of the first substrate or the third substrate. The active elements are arranged in a row direction and a column direction on the surface of the second substrate or the third substrate.

If the active matrix element is used for the light emitting material section and the active matrix element is used for the liquid crystal material section and both parts are driven by active matrix driving as in the above structure, the response speed, viewing angle, An image display device having better contrast and the like can be provided.

The image display device according to claim 41 is the image display device according to claim 38, wherein the electrodes formed on the surfaces of the first substrate and the third substrate are both stripe electrodes. And each striped electrode,
The electrodes arranged on the surfaces of the second substrate and the third substrate are stripe-shaped electrodes, the electrodes being arranged so that their longitudinal directions cross each other in a state of facing each other;
The striped electrodes are arranged so that their longitudinal directions intersect with each other while facing each other.

If the stripe-shaped electrode is used for the light-emitting material portion and the stripe-shaped electrode is used for the liquid crystal material portion as in the above structure, the light-emitting material portion and the liquid crystal material portion can be image-displayed by simple matrix driving. . Since such an image display device can be manufactured at a lower cost than an image display device using a switching element such as a TFT, an inexpensive product can be provided.

An image display device according to a forty-second aspect is the image display device according to the thirty-eighth aspect, in which active elements are arranged in a row direction and a column direction on the surface of the first substrate or the third substrate. And the electrodes formed on the surfaces of the second substrate and the third substrate are both striped electrodes, and each striped electrode is
It is characterized in that they are arranged so that their longitudinal directions intersect with each other while facing each other.

Even if the active matrix element is used for the light emitting material part and the stripe-shaped electrode is used for the liquid crystal material part and both parts are driven by different driving methods as in the above structure, an image display device of high display quality is obtained. Becomes

The image display device according to claim 43 is the image display device according to claim 38, in which the electrodes formed on the surfaces of the first substrate and the third substrate are both stripe electrodes. And each striped electrode,
They are arranged so that their longitudinal directions intersect each other in a state of facing each other, and active elements are arranged in a row direction and a column direction on the surface of the second substrate or the third substrate. Characterize.

As described above, even if the stripe-shaped electrode is used for the light emitting material part and the active matrix element is used for the liquid crystal material part and both parts are driven by different driving methods, an image display device of high display quality is obtained. Becomes

It is preferable to use a thin film transistor element or a thin film diode element as the active element. When used as these switching elements, precise control can be performed for each pixel, so that an image with high display quality can be displayed.

An image display device according to a 46th aspect is the image display device according to the 38th aspect, wherein a reflection plate is provided between the third substrate and the light emitting material portion and / or the liquid crystal material portion. Is arranged. By using the reflection plate in this manner, external light can be used, so that lower power consumption can be realized. In particular, if a reflection plate having a light scattering property is used, it is possible to prevent external light from being reflected on the display surface and making an image difficult to see.

An image display device according to a forty-eighth aspect is the image display device according to the thirty-eighth aspect, wherein the electrodes formed on both surfaces of the third substrate have light reflectivity. And If the electrode having light reflectivity is used as described above, it is not necessary to dispose a reflector separately.
The image display device is thin and has low power consumption. In particular, if a reflective electrode having a light scattering property is used, it is possible to prevent external light from being reflected on the display surface and making the image display device difficult to see.

An image display device according to claim 50 is the image display device according to any one of claims 38 to 49, wherein the light emitting material portion is driven to display an image,
Alternatively, it is characterized by comprising an automatic selection means for automatically selecting whether to display an image by driving the liquid crystal material portion.

As in the above-mentioned structure, if the single device has the light emitting material portion and the liquid crystal material portion and the automatic selecting means is provided, the observer can observe the external light condition, the kind of the image, etc. You can easily see the image that corresponds to.

An image display device according to a fifty-first aspect is the image display device according to the fifty-first aspect, wherein the automatic selection means detects external light for detecting the amount of external light reaching the display surface. Section, and an automatic switch section for automatically switching between driving of the light emitting material section and driving of the liquid crystal material section according to the detection result of the external light detecting section.

With the image display device having the automatic selection means using the amount of external light as an index as in the above-mentioned structure, it is possible to easily see an image of high display quality that appropriately corresponds to the external light conditions. .

An image display device according to a fifty-second aspect is the image display device according to the fifty-fifth aspect, wherein the automatic selection means includes an image identification section for identifying a moving image or a still image.
An automatic switch unit for automatically switching between driving the light emitting material portion and driving the liquid crystal material portion according to the discrimination result of the image discriminating portion.

With the image display device having the automatic selection means using the image information as an index as in the above configuration, it is possible to easily see an image of high display quality that appropriately corresponds to the type of image.

The image display device according to a fifty-third aspect is one of a substrate having electrodes formed on five or more surfaces arranged in a state of facing each other and a gap formed by the five or more substrates. A liquid crystal material portion arranged in one of the outer gaps, three or more light emitting material portions arranged in the other gaps of the gaps and having different emission spectra, and the liquid crystal material portion. It is characterized in that it has a reflection plate having a reflection portion and a transmission portion arranged on the surface of the substrate and interposed between the light emitting material portion.

When the liquid crystal material portion, the semi-transmissive / semi-reflecting plate, and the light emitting material portions of three or more kinds are provided as in the above structure, the liquid crystal material portion is synchronized with the time division driving of the light emitting material portion. When driven, color display is possible without a color filter. In this case, since the pixel area can be increased as compared with the conventional reflective / transmissive liquid crystal display device, it is possible to perform image display with good contrast, bright color and wide color reproduction range with low power consumption.

The image display device according to claim 54 is the image display device according to claim 53, in which a drive circuit is formed on the surface of any one of the five or more substrates. It is characterized by As in the above configuration, 1
If the drive circuit is formed only on one substrate, it is advantageous in terms of manufacturing efficiency. In particular, if it is formed on the same substrate as the TFT, the metal wiring, etc., the effect is greater.

The image display apparatus described in Item 55 is the image display apparatus described in Item 53, wherein the reflecting portion is
It is characterized by having a light scattering property. With such a reflector, it is possible to prevent external light from being reflected on the display surface and making the image display difficult to see.

An image display device according to claim 56 is the image display device according to any one of claims 53 to 55, wherein the liquid crystal material portion is driven to display an image,
It is characterized by comprising an automatic selection means for automatically selecting whether to display an image by driving the liquid crystal material portion and the light emitting material portion.

As in the above structure, if the single device has the light emitting material portion and the liquid crystal material portion and the automatic selecting means is provided, the observer can appropriately respond to the external light conditions and the like. You can easily view the image.

The image display device according to a fifty-seventh aspect is the image display device according to the fifty-sixth aspect, wherein the automatic selection means detects external light for detecting the amount of external light reaching the display surface. Section and an automatic switch section for automatically switching whether to drive the liquid crystal material section or both the liquid crystal material section and the light emitting material section according to the detection result of the external light detection section. It is characterized by

With the image display device having the automatic selection means using the amount of external light as an index as in the above-mentioned configuration, it is possible to easily see an image of high display quality that appropriately corresponds to the external light conditions. .

As the liquid crystal material portion, a TN liquid crystal material,
Guest-host type liquid crystal material, polymer dispersed type liquid crystal material, polymer network type liquid crystal material and the like are used. In particular, if the guest-host type liquid crystal material, the polymer dispersion type liquid crystal material, or the polymer network type liquid crystal material, the liquid crystal material portion has the scattering controllability and the polarizing plate is not necessary, so that a thinner image display is possible. It becomes a device. Guest here
The host-type liquid crystal material refers to a liquid crystal (host) to which a dichroic dye (guest) is added. Further, the polymer-dispersed liquid crystal material (NCAP) refers to a liquid crystal in which liquid crystals are dispersed as fine droplets in a polymer matrix. further,
The polymer network type liquid crystal material (PN) refers to a material in which a polymer is dispersed in a continuous phase of liquid crystal in a three-dimensional network or in the form of fine droplets.

A known organic electroluminescent material (organic EL material) or the like is used as the light emitting material portion composed of the organic compound.

According to a sixty-first aspect of the present invention, there is provided a method of driving an image display device, comprising a plurality of substrates having electrodes formed on their surfaces, which are arranged to face each other, and an organic film interposed between the plurality of substrates. A method of driving an image display device having a light emitting material part made of a compound and a liquid crystal material part, characterized in that the light emitting material part and the liquid crystal material part are driven by different driving methods. Specifically, when the driving of the light emitting material portion is active matrix driving and the driving of the liquid crystal material portion is simple matrix driving, or when the driving of the light emitting material portion is simple matrix driving and the driving of the liquid crystal material portion is active. It may be matrix driven.

According to a sixty-third aspect of the present invention, there is provided a method of driving an image display device, comprising a plurality of substrates having electrodes formed on their surfaces, which are arranged to face each other, and an organic film interposed between the plurality of substrates. A driving method of an image display device having a light emitting material portion composed of a compound and a liquid crystal material portion, characterized in that the light emitting material portion and the liquid crystal material portion are driven in the same driving method. Specifically, there are a case where the driving of the light emitting material portion and the liquid crystal material portion are both active matrix driving, and a case where the driving of the light emitting material portion and the liquid crystal material portion are both simple matrix driving.

According to a sixty-sixth aspect of the present invention, there is provided a method of driving an image display device, comprising: five or more sheets arranged so as to face each other;
The liquid crystal material portion disposed in one of the outermost gaps formed by the substrate having the electrodes formed on the surface and the five or more substrates and the other of the gaps. Three or more light emitting material portions each having a different emission spectrum, which are respectively disposed in the gap, and a reflective portion and a transmissive portion, which are disposed on the surface of the substrate interposed between the liquid crystal material portion and the light emitting material portion. A driving method of an image display device having a reflection plate having: a liquid crystal material part, the three or more light emitting material parts being time-divisionally driven, and the liquid crystal material part being driven in accordance with the time-divisional driving. .

If the liquid crystal material portion is driven in accordance with the time-divisional driving timing of the light emitting material portion as in the above structure,
Color display is possible without a color filter. Since the pixel area can be made larger than that of the conventional transflective liquid crystal display device, a bright image can be displayed with low power consumption.

According to a sixty-seventh aspect of the present invention, in the selective display method of the image display device, a first substrate having an electrode formed on the surface thereof and a second substrate having an electrode formed on the surface thereof facing the first substrate are provided. A substrate, and a light emitting material portion and a liquid crystal material portion made of an organic compound, which are interposed between the first substrate and the second substrate in a state orthogonal to a facing direction of the both substrates. , An external light detecting unit for detecting the amount of external light reaching the display surface, and automatically switching between driving of the light emitting material unit and driving of the liquid crystal material unit according to the detection result of the external light detecting unit. A method for selecting and displaying an image display device comprising an automatic selection unit having an automatic switch unit for changing the light emission when the external light detection unit determines that the external light is insufficient. The material part is driven to display an image, and If the external light is determined to rich by the detection section and displaying an image by driving the liquid crystal material portion is switched by the automatic switching unit.

As in the above structure, if the external light detecting section detects the amount of external light and one of the automatic switch sections responding to the detection result drives one of them to selectively display an image, the external light is detected. It is possible to provide an image with high display quality that appropriately meets the conditions.

An image display device according to a sixty-eighth aspect is characterized in that a first substrate having an electrode formed on a surface thereof, a second substrate opposite to the first substrate having an electrode formed on the surface thereof, A light emitting material portion and a liquid crystal material portion made of an organic compound, which are interposed between the first substrate and the second substrate in a direction orthogonal to the facing direction of the both substrates, are provided. Automatic selection having an image identifying section for identifying whether an image is present, and an automatic switch section for automatically switching between driving of the light emitting material section and driving of the liquid crystal material section according to the identification result of the image identifying section A method for selecting and displaying an image display device, comprising: means for displaying an image by driving the light emitting material portion by switching by the automatic switch portion when the image identifying portion determines that the image is a moving image. Was judged as a still image by the department The case and displaying an image by driving the liquid crystal material portion is switched by the automatic switching unit.

As in the above structure, if the image identifying section identifies the type of the image and the automatic switch section responding to the identification result drives one of the images to selectively display the image, It is possible to provide images with high display quality according to the type.

According to a 69th aspect of the selective display method of the image display device, a first substrate having an electrode formed on a surface thereof and a second substrate having an electrode formed on a surface thereof, the second substrate being opposed to the first substrate. A substrate; and a light emitting material portion and a liquid crystal material portion made of an organic compound, which are interposed between the first substrate and the second substrate in the same direction as the facing direction of the both substrates. ,
In order to automatically switch the driving of the light emitting material portion and the driving of the liquid crystal material portion according to the detection result of the external light detecting portion and the external light detecting portion for detecting the amount of the external light reaching the display surface. A method for selecting and displaying an image display device comprising an automatic selection means having an automatic switch section, wherein when the external light detection section determines that external light is scarce, the automatic switch section switches the light emitting material. To display an image by mainly driving the liquid crystal part, and when the external light detection part determines that the external light is abundant, the automatic switch part is switched to mainly drive the liquid crystal material part to display the image. Is characterized by.

As in the above configuration, if the external light detection unit detects the amount of external light and one of the automatic switch units responding to the detection result drives one of them to selectively display an image, the external light is detected. It is possible to provide an image with high display quality that appropriately meets the conditions.

According to a 70th aspect of the present invention, there is provided a selective display method for an image display device, comprising: a first substrate having an electrode formed on a surface thereof; and a second substrate having an electrode formed on the surface thereof, the second substrate being opposed to the first substrate. A substrate; and a light emitting material portion and a liquid crystal material portion made of an organic compound, which are interposed between the first substrate and the second substrate in the same direction as the facing direction of the both substrates. ,
An image identification section for identifying whether it is a moving image or a still image, and an automatic switch section for automatically switching between driving the light emitting material section and driving the liquid crystal material section according to the identification result of the image identifying section. A method for selecting and displaying an image display device comprising an automatic selection means having the above, wherein when the image identification section determines that the image is a moving image, the image is displayed by mainly driving the luminescent material section by switching by the automatic switch section. However, when the image identification unit determines that the image is a still image, the image is displayed by switching the automatic switch unit to mainly drive the liquid crystal material unit.

As in the above structure, if the image identifying section identifies the type of the image and one of the automatic switch sections responding to the identification result drives one of the images to selectively display the image, It is possible to provide an image with high display quality that is appropriate for the type.

According to a seventy-first aspect of the present invention, there is provided a selective display method for an image display device, wherein a first substrate having an electrode formed on a surface thereof and an electrode formed on both surfaces of the substrate arranged so as to face the first substrate. And a second substrate having an electrode formed on the surface thereof, which is disposed so as to face the third substrate, and an organic material interposed between the first substrate and the third substrate. A light emitting material portion composed of a compound, the third substrate and the second
An external light detection unit for detecting the amount of external light reaching the display surface, the liquid crystal material unit being interposed between the substrate and the liquid crystal material unit;
A selective display method of an image display device including an automatic selection unit having an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section according to a detection result of the outside light detecting section. When the external light detection unit determines that the external light is scarce, the automatic switch unit switches the light emitting material unit to display an image, and the external light detection unit enriches the external light. If it is determined that the liquid crystal material portion is driven by the automatic switch portion, an image is displayed.

As in the above-described structure, if the external light detection unit detects the amount of external light and one of the automatic switch units responding to the detection result drives one of them to selectively display an image, the external light is detected. It is possible to provide an image with high display quality that appropriately meets the conditions.

According to a 72nd aspect of the present invention, in a selective display method of an image display apparatus, a first substrate having an electrode formed on a surface thereof and an electrode formed on both surfaces of the substrate are arranged so as to face the first substrate. And a second substrate having an electrode formed on the surface thereof, which is disposed so as to face the third substrate, and an organic material interposed between the first substrate and the third substrate. A light emitting material portion composed of a compound, the third substrate and the second
An image identifying section for interposing between a substrate and a liquid crystal material section, for identifying a moving image or a still image, and driving of the light emitting material section and a liquid crystal material according to an identification result of the image identifying section. A method of selecting and displaying an image display device, comprising: an automatic selection means having an automatic switch section for automatically switching between driving of a section and the automatic switch section when the image discriminating section judges that the moving picture is a moving image. To display an image by driving the light emitting material portion by switching the liquid crystal material portion by the automatic switching portion when the image identifying portion determines that the image is a still image. Characterize.

As in the above configuration, if the type of image is identified by the image identifying unit and one of them is driven by the automatic switch unit to selectively display the image, the type of image can be appropriately adjusted. Images with high display quality can be provided.

According to a seventy-third aspect of the present invention, there is provided a selective display method for an image display device, which comprises five or more substrates, which are arranged to face each other, having electrodes formed on their surfaces, and five or more substrates. Liquid crystal material portion disposed in one of the outermost gaps of the gaps and three or more light emitting materials disposed in the other gaps of the gaps and having different emission spectra from each other. And a reflection plate having a reflection portion and a transmission portion arranged on the surface of the substrate interposed between the liquid crystal material portion and the light emitting material portion, and the amount of external light reaching the display surface. And an external light detection unit for detecting the light source, and automatically switches between driving the liquid crystal material unit or both the liquid crystal material unit and the light emitting material unit according to the detection result of the external light detection unit. There is an automatic switch part for A method for selecting and displaying an image display device comprising an automatic selection means, wherein when the external light detection unit determines that the external light is scarce, the automatic switch unit switches the light emitting material unit and the liquid crystal material unit. It is characterized in that the liquid crystal display device is driven to display an image, and when the external light detection unit determines that the external light is abundant, the automatic switch unit is switched to drive the liquid crystal material unit to display the image.

As in the above structure, if the external light detection unit detects the amount of external light and one of the automatic switch units responding to the detection result drives one of them to selectively display an image, the external light is detected. It is possible to provide an image with high display quality that appropriately meets the conditions.

[0106]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. In the following drawings, parts unnecessary for description are omitted, and there are parts illustrated in an enlarged or reduced form for ease of description.

(Embodiment 1) FIG. 1 is a sectional view schematically showing a main part of an image display device according to Embodiment 1 of the present invention.

The image display device according to the present embodiment includes a pair of substrates (first substrate 1, second substrate 2) and a liquid crystal interposed between the substrates in a direction orthogonal to the facing direction of the substrates. It has a material part 3 and a light emitting material part 4. On the inner surface of the first substrate 1, pixel electrodes 5 and 6, metal wirings (image signal lines, scanning signal lines), thin film transistors (TFTs, Thin-Film-Transistors) as pixel switching elements, etc. 3, the light emitting material portion 4 is formed, and the alignment film 7 is formed on the light emitting material portion 4 only on the liquid crystal material portion 3 side. Further, on the inner surface of the substrate 1 and outside the seal portion 8, the driving ICs 9 and 1 for the liquid crystal material portion 3 and the light emitting material portion 4 are provided.
0 is formed respectively. Note that, in FIG. 1, metal wirings, TFTs and the like are omitted. On the outer surface of the first substrate 1, a polarizing plate 11 and a backlight unit 12 are arranged on the liquid crystal material 3 side. On the other hand, opposed transparent electrodes 13 and 14 are formed on the inner surface of the second substrate 2 for the liquid crystal material portion 3 and the light emitting material portion 4, respectively, and an alignment film 7 is further formed on the surface thereof. It is formed only on the 3 side. A polarizing plate 15 having a polarization axis orthogonal to the polarization axis of the polarizing plate 11 is arranged on the outer surface of the second substrate 2 on the liquid crystal material 3 side. A color filter is arranged on the inner surface of the second substrate 2 (not shown).

The liquid crystal material part 3 is formed between the pair of substrates 1 and 2 on which the alignment film 7 is formed, and is twisted nematic (TN).
It is formed by disposing a liquid crystal material. The liquid crystal material part 3 has an equivalent circuit shown in FIG. In the figure, 16 is a TFT, 17 is a TFT, 18 is a capacitor,
Reference numeral 19 is a source signal line (data line), and 20 is a gate signal line (scanning line).

The light emitting material portion 4 is, for example, as shown in FIG. 3, the substrate 1 on which pixel electrodes (anode) 6, TFTs, etc. are formed.
A structure in which a p-type organic layer 23 composed of a hole injection layer 21 and a hole transport layer 22 is formed thereon, and an n-type organic layer 26 composed of a light emitting layer 24 and an electron transport layer 25 is formed thereon. is doing. Then, on the light emitting material portion 4, facing
The substrate 2 on which the transparent electrode (cathode) 14 is formed is arranged. The light emitting material section 4 has an equivalent circuit shown in FIG. In the figure, 21 is a TFT and 22 is a T
FT and 23 are capacitors, 24 is a source signal line (data line), and 25 is a gate signal line (scanning line).

The image display device 1 having the above structure was manufactured as follows. First, on the left side of the surface of the substrate 1 made of glass, transparent resin or the like, the top gate type TFTs 16 and 17 for the liquid crystal material portion 3 having a semiconductor layer using amorphous silicon (a-Si), and ITO etc. The driving IC 9 is provided together with the pixel electrode 5 and the like, and the top gate type TFT 2 for the light emitting material portion 4 is provided on the right side of the surface of the substrate 1.
1, 2 and the pixel electrode (anode) 6 and the like, the driving IC 1
0 is set. Then, the liquid crystal material part 3 and the light emitting material part 4 were formed thereon. Here, as the light emitting material portion 4, a hole injection layer 21 is provided on the substrate 1 with the TFT,
The hole transport layer 22 and the p-type organic layer 23 are vacuum-deposited in this order to form a p-type organic layer 23, and a light emitting layer 24 (white emission) and an electron transport layer 25 are further deposited in this order to n. The mold organic layer 26 was formed. In addition, the liquid crystal material portion 3 is the TFT 1
After the polyimide (SE-7492 manufactured by Nissan Chemical Industries, Ltd.) is applied and baked on the substrate 1 on which 6, 17 and the pixel electrode 5 and the like are formed, an alignment film 7 formed by rubbing treatment is formed, and then the substrate An ultraviolet-curable sealant is screen-printed on the outer peripheral portion of 1 to form a seal portion 8. Through the seal portion 8, an opposite transparent electrode 13 for the liquid crystal material portion 3 and an opposite transparent electrode for the light emitting material layer are formed. While sandwiching the substrate 2 made of glass or the like on which the electrode (cathode) 14 and the alignment film 7 are formed as an opposite substrate, the seal portion 8 is irradiated with ultraviolet rays, and the liquid crystal material is further injected from the inlet provided in the seal portion 8. It was formed by injection. After that, the polarizing plate 1 is placed on the outside of the substrates 1 and 2, respectively.
1, 15, etc. are arranged, and the backlight unit 12 is further provided.
Was placed. The color filter was formed on the substrate 2 before the liquid crystal material part 3 was formed.

The image display device having the above-described structure is for displaying an image by separately active-matrix driving the liquid crystal material portion and the light emitting material portion. For example, the display by the liquid crystal material portion and the display by the light emitting material portion are switched. When the manual switch is attached, an image can be displayed according to the observer's desire.

Further, instead of the manual switch, an appropriate image can be automatically provided by attaching an automatic selecting means for switching between displaying by the light emitting material portion and displaying by the liquid crystal material portion.

For example, when an automatic selection means equipped with an external light detection section such as an optical sensor and an automatic switch section for automatically switching between display by a liquid crystal material and display by a light emitting material according to the detection result is attached, It is possible to perform image display appropriately corresponding to the external light conditions. That is, when the outside light is abundant, such as in fine weather, the light emitting material section is used for display, and when the outside light is scarce, such as in the rain, the liquid crystal material section is used for display. An image with high display quality can be provided to the user. Specifically,
As shown in FIG. 5, it is determined that the amount of external light is abundant or scarce based on the amount of light detected by the external light detection unit 31, and the automatic switch unit 32 that responds to the determination determines that the driving IC 9 for the liquid crystal material unit 3 and the light emission. By automatically switching the driving IC 10 for the material portion 4 and driving the respective portions 3 and 4, it is possible to appropriately display an image according to the external light conditions. It should be noted that it is usually preferable to install the external light detection unit on the display surface side, but the present invention is not limited to this. Also, a
Since -Si and the like pass a photocurrent, the semiconductor layer of the TFT may be used instead of the photosensor or the like. The automatic switch portion is usually preferably attached around the driving IC, but is not particularly limited as long as it is a portion that can be connected to the external light detecting portion and the driving IC.

Further, an image identifying section for identifying a moving image or a still image based on the image information signal, and an automatic switch section for automatically switching between image display by a liquid crystal material and image display by a light emitting material according to the identification result. By attaching the provided automatic selection means, it is possible to display an image appropriately corresponding to the image information. More specifically, as shown in FIG. 6, it is determined whether the image information signal identified by the image identification unit 35 is a moving image or a still image, and the liquid crystal is displayed by the automatic switch unit 36 that responds to the determination. If the driving IC 9 for the material portion 3 and the driving IC 10 for the light emitting material portion 4 are automatically switched to drive the respective portions 3 and 4, an image can be displayed appropriately according to the image information. . The image identifying section is a section having a function of identifying whether the image information signal from the well-known image information input / output section attached to the image display device is moving image information or still image information. , Is arranged in a portion where the image information input / output unit and the driving IC are connected. The automatic switch is usually
It is preferable to attach the drive IC to the periphery of the drive IC, but it is not particularly limited as long as it can be connected to the image identification portion and the drive IC.

When an image is displayed on the image display device according to the present embodiment, it is possible to display an image with a good contrast, a bright color and a wide color reproduction range regardless of whether the liquid crystal material portion 3 or the light emitting material portion 4 is displayed. I was able to.

(Second Embodiment) FIG. 7 is a sectional view schematically showing a main part of an image display device according to a second embodiment of the present invention. This image display device is different from the image display device according to the first embodiment in that instead of the TFT, the pixel electrode, and the counter electrode, the stripe electrodes 26 and 2 for the liquid crystal material portion 3 are provided.
7. The structure uses stripe electrodes 28 and 29 for the light emitting material portion 4.

The striped electrodes 26 and 27 drive the liquid crystal material portion 3, and the upper and lower electrodes are formed in a state where their longitudinal directions intersect and face each other. On the other hand, the striped electrodes 28 and 29 drive the light emitting material portion 4, and similarly, the upper and lower electrodes are formed in a state where their longitudinal directions intersect and face each other. Here, the term “intersecting” is usually formed so that the longitudinal directions of the upper and lower electrodes are orthogonal to each other, but the present invention is not limited to such orthogonal directions, and the liquid crystal material portion or the light emitting portion may be formed in the overlapping portion between the upper and lower electrodes. It means that the material part may be formed.

In the image display device having the above-mentioned structure, the liquid crystal material portion and the light emitting material portion are separately driven in a simple matrix to display an image, and the display by the liquid crystal material portion and the display by the light emitting material portion are manually switched. By attaching the switch, it is possible to display an image with high display quality according to the viewer's request. If an automatic selection unit having an external light detection unit, an automatic selection unit having an image identification unit, or the like is attached instead of the manual switch, the image display can be automatically performed according to the external light condition, the type of the image, and the like. .

When an image is displayed on the image display device according to the present embodiment, it is possible to display an image with a good contrast, a bright color and a wide color reproduction range regardless of whether the liquid crystal material portion 3 or the light emitting material portion 4 is displayed. I was able to.

(Third Embodiment) FIG. 8 is a sectional view schematically showing a main part of an image display device according to a third embodiment of the present invention. This image display device is configured to use the stripe electrodes 26 and 27 on the liquid crystal material portion 3 side and the TFT, the pixel electrode 6, and the counter transparent electrode 14 on the light emitting material portion 4 side.

Even in the image display device having the above structure, an image can be displayed by simply driving the liquid crystal material portion in a matrix and driving the light emitting material portion in an active matrix. By attaching a manual switch for switching the display by the section, it is possible to perform image display with high display quality according to the observer's request. If an automatic selection unit having an external light detection unit, an automatic selection unit having an image identification unit, or the like is attached instead of the manual switch, the image display can be automatically performed according to the external light condition, the type of the image, and the like. .

When an image is displayed on the image display device according to the present embodiment, it is possible to display an image with a good contrast, a bright color and a wide color reproduction range regardless of whether the liquid crystal material portion 3 or the light emitting material portion 4 is displayed. I was able to.

(Fourth Embodiment) FIG. 9 is a sectional view schematically showing a main part of an image display device according to a fourth embodiment of the present invention. This image display device has a TF on the liquid crystal material part 3 side.
T, the pixel electrode 5, the counter transparent electrode 13, and the striped electrodes 28 and 29 on the side of the light emitting material portion 4 are used.

Even in the image display device having the above structure, an image can be displayed by driving the liquid crystal material portion in an active matrix and driving the light emitting material portion in a simple matrix. By attaching a manual switch for switching the display by the section, it is possible to perform image display with high display quality according to the observer's request. If an automatic selection unit having an external light detection unit, an automatic selection unit having an image identification unit, or the like is attached instead of the manual switch, the image display can be automatically performed according to the external light condition, the type of the image, and the like. .

When an image display is performed on the image display device according to the present embodiment, an image display having a good contrast, a bright color and a wide color reproduction range is performed regardless of whether the liquid crystal material portion 3 or the light emitting material portion 4 is displayed. I was able to.

(Other Matters Related to Embodiments 1 to 4) In the above description, the color filter is used for color display. However, in the light emitting material portion, for example, red (R),
It is also possible to adopt a configuration in which portions having respective emission spectra of green (G) and blue (B) are divided and arranged for each unit pixel.

In the above, TF is used as the active element.
Although T is used, the present invention is not limited to this, and a two-terminal type thin film diode element may be used. The semiconductor layer of the TFT is not limited to amorphous silicon, but polysilicon of a high temperature process, polysilicon of a low temperature process by laser annealing, or the like may be used.

Further, a seal portion may be provided between the liquid crystal material portion and the light emitting material portion, and each layer may be separately enclosed by the seal portion.

Further, although the case where the display of the liquid crystal material portion is a transmissive type has been described above, a reflector may be attached,
An image having a reflective property may be used by using an electrode having light reflectivity. In this case, from the viewpoint of making it easier to see the display image, it is preferable to use, as the reflective plate or the light-reflective electrode, a light-scattering electrode having unevenness formed on the surface.

A retardation plate may be attached together with the polarizing plate.

Further, although the case where one is displayed and the other is not displayed has been described above, for example, a moving image is displayed in the light emitting material portion and a still image is displayed in the liquid crystal material portion at the same time, which is different on one screen. An image may be displayed. In this way, much information can be provided to the observer in a short time. Further, the shape of the display surface is not particularly limited, and may be, for example, an image display device in which a cylindrical light emitting material portion is provided in the center and a liquid crystal material portion is provided around it. Further, the display surface is not limited to the above-described two-divided mode, but may be a multi-divided mode. further,
Although the liquid crystal material portion and the light emitting material portion occupy substantially the same size in the display screen in FIG. 1, the present invention is not limited to this. For example, the area of the light emitting material portion for displaying a moving image is increased. Alternatively, the area of the liquid crystal material portion for displaying a still image may be reduced.

Further, although the case where the display in each layer is different is described in the above-mentioned embodiment, the present invention is not limited to such a case, and for example, one image may be displayed on the entire display screen. Good. That is, a part of one image may be displayed by the liquid crystal material portion, and the rest may be displayed by the light emitting material portion.

Although the light emitting material portion and the liquid crystal material portion are provided for each display unit in the above, the light emitting material portion and the liquid crystal material portion may be provided in a check pattern for each unit pixel. In this case, since the light emitting material section 3 functions as a diode, the light emitting material section may be used as a switching element for driving the liquid crystal material section. By doing so, the number of TFTs can be reduced, so that the aperture ratio can be improved.

(Fifth Embodiment) FIG. 10 is a sectional view schematically showing a main part of an image display device according to a fifth embodiment of the present invention.

In the image display device according to this embodiment, a pair of substrates (first substrate 51, second substrate 52) and a liquid crystal interposed between the substrates in the same direction as the facing direction of the substrates. It has a material portion 53 and a light emitting material portion 54. Pixel electrodes 55, metal wirings (image signal lines, scanning signal lines), TFTs as pixel switching elements, and the like are formed on the inner surface of the substrate 51, and a light emitting material portion 54 is formed on the pixel electrodes 55. The liquid crystal material portion 53 is formed in contact with the light emitting material portion 54. Further, a driving IC 59 is formed on the inner surface of the substrate 51 and outside the sealing portion 58. A polarizing plate 61 and a light source 63 (functioning as a backlight of the liquid crystal material portion 53) are attached to the outer surface of the first substrate 51. On the other hand, a counter transparent electrode 60 is formed on the inner surface of the second substrate 52, and an alignment film 57 is further formed thereon. A polarizing plate 62 having a polarization axis orthogonal to the polarization axis of the polarizing plate 61 is arranged on the outer surface of the second substrate 52. The substrate 5 on the display surface side
Color filters are arranged on the inner surfaces of 1, 52 (not shown).

The image display device having the above structure was manufactured as follows. First, after the material for the light emitting material portion is vapor-deposited or the like to form the light emitting material portion 54 on the substrate 52 on which the pixel electrode 55, the TFT and the like are formed, the ultraviolet ray curable sealing agent is screen-printed to seal Then, the substrate 52 on which the opposing transparent electrode 60 and the alignment film 57 are formed is arranged via the seal portion. Then, a TN liquid crystal material was injected by a known method to form a liquid crystal material portion 53. Then, an image display device was obtained by disposing polarizing plates 61.62 and the like.

The image display device having the above-mentioned structure is provided with the driving IC 5
The liquid crystal material portion 53 and the light emitting material portion 54 are driven in an active matrix by means of 9 to display images on both sides. If a manual switch for switching between display by the liquid crystal material portion and display by the light emitting material portion is attached, Images can be selectively displayed as desired. If an automatic selection unit having an external light detection unit or an automatic selection unit having an image identification unit is attached instead of the manual switch, image display can be automatically performed according to the external light conditions and the like.

When an image is displayed on the image display device according to the present embodiment, the contrast is good whether it is displayed by the liquid crystal material portion 53 or the light emitting material portion 54.
It was possible to perform bright image display with a wide color reproduction range.

Although the color filter is used for color display in the above, in the light emitting material portion 54, for example, a portion having respective emission spectra of red (R), green (G) and blue (B). May be divided and arranged for each unit pixel.

(Sixth Embodiment) FIG. 11 is a sectional view schematically showing a main part of an image display device according to a sixth embodiment of the present invention. This image display device has a configuration in which a reflective plate 68 having light reflectivity in a visible light region such as aluminum is arranged between the substrate 52 on which the counter electrode 65 is formed and the alignment film 57. In the figure, 66 is a driving IC connected to a TFT or the like, and 67 is an optical compensating plate (polarizing plate and retardation plate).

The image display device having the above-mentioned structure is provided with the driving IC 6
6, the liquid crystal material portion 53 and the light emitting material portion 54 are driven in an active matrix to display an image on one side, and a manual switch for switching between display by the liquid crystal material portion (reflection type liquid crystal display) and display by the light emitting material portion is provided. If attached, an image can be selectively displayed according to the observer's desire. If an automatic selection unit having an external light detection unit, an automatic selection unit having an image identification unit, or the like is attached instead of the manual switch, the image display can be automatically performed according to the external light condition, the type of the image, and the like. .

When an image is displayed on the image display device according to the present embodiment, the contrast is good whether the display is by the liquid crystal material portion 53 or the light emitting material portion 54.
It was possible to perform bright image display with a wide color reproduction range.

The reflecting plate 68 may have a smooth surface, but has a light-scattering property in which irregularities are formed on the surface in order to make the display screen easier to see. May be used. The reflector 68 may be arranged between the liquid crystal material portion 53 and the light emitting material portion 54.

Further, although the color filter is used for color display in the above, in the light emitting material portion, for example, there are portions having respective emission spectra of red (R), green (G) and blue (B). You may make it the structure divided and arrange | positioned for every unit pixel. With such a configuration, the light emitting material section 54 is driven when the liquid crystal material section 53 is driven.
It will function as a color filter.

(Seventh Embodiment) FIG. 12 is a sectional view schematically showing a main part of an image display device according to a seventh embodiment of the present invention. This image display device is a device using, as a pixel electrode, a pixel electrode 71 having light reflectivity such as a metal having a high reflectance in a visible light region such as aluminum.
The electrode 71 is patterned for each pixel. In FIG. 12, 72 is a driving IC connected to a TFT or the like.
Is.

The image display device having the above-mentioned structure is provided with the driving IC 7
The liquid crystal material portion 53 and the light emitting material portion 54 are driven in active matrix by 2 to display an image on one side, and a manual switch for switching between display by the liquid crystal material portion (reflection type liquid crystal display) and display by the light emitting material portion is provided. If attached, an image can be selectively displayed according to the observer's desire. If an automatic selection unit having an external light detection unit or an automatic selection unit having an image identification unit is attached instead of the manual switch, image display can be automatically performed according to the external light conditions and the like.

When an image was displayed on the image display device according to the present embodiment, the contrast was good whether the display was by the liquid crystal material portion 53 or the light emitting material portion 54.
It was possible to perform bright image display with a wide color reproduction range.

The pixel electrode having light reflectivity may have a smooth surface, but from the viewpoint of making the display image easier to see, the light scattering property is obtained by forming irregularities on the surface. You may use what was equipped with. Alternatively, the pixel electrode may be transparent and the counter electrode may be a reflective electrode.

Further, although the color filter is used for color display in the above, in the light emitting material portion, for example, there are portions having respective emission spectra of red (R), green (G) and blue (B). You may make it the structure divided and arranged for every unit pixel.

(Other Matters Related to Embodiments 5 to 7) Although the TFT is used as the active element in the above, the invention is not limited to this, and a two-terminal type thin film diode element may be used. . The semiconductor layer of the TFT is not limited to amorphous silicon, but polysilicon of a high temperature process, polysilicon of a low temperature process by laser annealing, or the like may be used.

Further, instead of active matrix driving using active elements, simple matrix driving using stripe electrodes may be adopted.

(Embodiment 8) FIG. 13 is a cross-sectional view schematically showing a main part of an image display device according to Embodiment 8 of the present invention.

In the image display device according to this embodiment, between the liquid crystal material portion 53 and the light emitting material portion 54, the pixel electrode 100 (having a TFT or the like) having light reflectivity and the counter electrode having light reflectivity are provided. A substrate (third substrate) 102 on which 101 and 101 are formed
Is arranged. In FIG. 13, 103 is a TFT for the liquid crystal material portion 53 and a TFT for the light emitting material portion 54.
Is a driving IC connected to.

The image display device having the above-described structure is provided with the driving IC 1
The liquid crystal material portion 53 and the light emitting material portion 54 are driven in an active matrix by means of 03 to display an image. If a manual switch for switching between the display by the liquid crystal material portion and the display by the light emitting material portion is attached, the observer can make a desired display Accordingly, the image display can be selectively performed. Further, if an automatic identification means having an external light detection portion or an automatic selection means having an image identification portion is attached instead of the manual switch, image display can be automatically performed according to the external light conditions and the like.

When an image is displayed on the image display device according to the present embodiment, the contrast is good whether the display is by the liquid crystal material portion 53 or the light emitting material portion 54.
It was possible to perform bright image display with a wide color reproduction range.

The electrodes 100 and 101 may have a smooth surface, but from the viewpoint of making the display easy to see, the electrodes 100 and 101 having a light-reflecting property in which irregularities are formed on the surface are used. You may use. In addition, the electrodes 100, 10
The substrate 10 having no light reflectivity is used as the substrate 1.
You may make it arrange | position a reflecting plate on the front and back of 2.

Further, in the above, the TFTs and the like are provided on the surfaces of the substrates 51 and 102 respectively, but the present invention is not limited to this, and they may be provided on the surface of the substrate 52. Further, the substrate 102
The TFTs and the like may be provided on both surfaces of the above and the driving IC 103 may also be provided.

Further, in the above, T is used as the active element.
Although the FT is used, the present invention is not limited to this, and a two-terminal type thin film diode element may be used. The semiconductor layer of the TFT is not limited to amorphous silicon, but polysilicon of a high temperature process, polysilicon of a low temperature process by laser annealing, or the like may be used. Further, instead of active matrix driving using active elements, simple matrix driving using stripe electrodes may be adopted.

Further, although the color filter is used for color display in the above, in the light emitting material portion, for example,
It is also possible to adopt a configuration in which portions having respective emission spectra of red (R), green (G), and blue (B) are divided and arranged for each unit pixel.

(Embodiment 9) FIG. 14 is a sectional view schematically showing a main part of an image display device according to Embodiment 8 of the present invention.

This image display device has pixel electrodes 55, TF
Between the substrate 51 on which T etc. are formed and the liquid crystal material portion 53,
A light emitting material portion (red light emitting material portion) 85 having a red emission spectrum, a counter transparent electrode 88, and a pixel transparent electrode 90.
A transparent substrate 89 on which (with TFT etc.) is formed, and a light emitting material portion (green light emitting material portion) having a green emission spectrum
86, counter transparent electrode 91, pixel transparent electrode 93 (TFT
Etc.) formed, a light emitting material portion (blue light emitting material portion) 87 having a blue emission spectrum,
Opposing transparent electrode 94 and pixel transparent electrode 9 for driving the liquid crystal material portion
It has a transparent substrate 95 on which 9 (with TFT etc.) is formed, and a reflection plate (semi-transmissive semi-reflective plate) 76 having a reflection portion and a transmission portion. In the figure, reference numeral 81 is a driving IC connected to a TFT or the like.

As shown in FIG. 15, the semi-transmissive semi-reflective plate 76 has a transparent substrate 96 on which an uneven reflecting portion 97 is formed, and a portion where the reflecting portion 97 is not formed is a transmitting portion 98. Has become. Reflecting part 97 (or transmitting part 98)
The unit area of is half the unit pixel area. The transmissive portion and the reflective portion may have substantially the same height as shown in FIG. 15, but the reflective portion is raised to the bottom (the thickness of the liquid crystal material portion on the reflective portion is substantially equal to the thickness of the liquid crystal material portion on the transmissive portion). It is also possible to use a reflection plate which is halved (see FIG. 16). With such a multi-gap structure, the optical path difference between the transmissive portion and the reflective portion is reduced, and a better image display can be performed. Further, as the reflecting portion, the one using the light scattering property based on the uneven shape is used, but the reflecting portion is not limited to such a thing and may be a reflecting part having various light scattering properties.

The image display device having the above-described configuration displays images as follows, for example. First, in an environment with abundant external light, the liquid crystal material part is driven so that the reflective liquid crystal display mode, that is, the light emitting material part does not emit light, to display an image. On the other hand, in an environment where the external light is scarce, each layer 85, 86, 87 of the light emitting material portion is driven in a time division manner, and the liquid crystal material portion 53 is driven in accordance with this time division drive (the liquid crystal material portion is in a light transmitting state). By doing so, full-color image display is performed.
At this time, since the pixel area can be used three times as large as that of the conventional reflective / transmissive type liquid crystal display device, it is possible to display an image having a good contrast and a wide color reproduction range. That is, in the conventional reflective / transmissive liquid crystal display device in which color filters (R, G, B) of three colors are arranged side by side, the display quality is remarkably deteriorated as the number of pixels is increased. By thus stacking the light emitting material portions 85.86 and 87 of the respective colors in the same direction as the facing direction of the substrate, the pixel area can be tripled, resulting in an image display device that realizes high display quality.

Even in the image display device having the above-mentioned structure, if the automatic selection means having the external light detecting portion is attached, the image display device can be automatically operated according to the external light conditions and the like.

In the above, TF is used as the active element.
Although T is used, the present invention is not limited to this,
A two-terminal type thin film diode element may be used. T
The semiconductor layer of the FT is not limited to amorphous silicon, but polysilicon of a high temperature process, polysilicon of a low temperature process by laser annealing, or the like may be used.

Further, instead of active matrix driving using active elements, simple matrix driving using stripe electrodes may be adopted.

(Other Matters Relating to Embodiments 1 to 9) In each of the embodiments, an example in which a TN liquid crystal material is used in the liquid crystal material portion has been described, but the present invention is not limited to this, and a polymer A dispersed liquid crystal material, a polymer network liquid crystal material, a guest-host liquid crystal material, or the like may be used.

[0169]

As described above, according to the present invention, the problems of the conventional liquid crystal display device are solved, and the contrast, brightness, color reproduction range, etc. are reduced depending on the external light conditions, the type of image, etc. Without doing so, it is possible to provide an image display device that realizes high display quality.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing a main part of an image display device according to a first embodiment.

FIG. 2 is an equivalent circuit of a liquid crystal material portion.

FIG. 3 is a sectional view schematically showing a light emitting material portion.

FIG. 4 is an equivalent circuit of a light emitting material portion.

FIG. 5 is an explanatory diagram for explaining a selection image display method when an automatic selection unit having an external light detection unit is attached.

FIG. 6 is an explanatory diagram for explaining a selected image display method when an automatic selection unit having an image identification unit is attached.

FIG. 7 is a sectional view schematically showing a main part of an image display device according to a second embodiment.

FIG. 8 is a sectional view schematically showing a main part of an image display device according to a third embodiment.

FIG. 9 is a sectional view schematically showing a main part of an image display device according to a fourth embodiment.

FIG. 10 is a sectional view schematically showing a main part of an image display device according to a fifth embodiment.

FIG. 11 is a sectional view schematically showing a main part of an image display device according to a sixth embodiment.

FIG. 12 is a sectional view schematically showing a main part of an image display device according to a seventh embodiment.

FIG. 13 is a sectional view schematically showing a main part of an image display device according to an eighth embodiment.

FIG. 14 is a sectional view schematically showing a main part of an image display device according to a ninth embodiment.

FIG. 15 is a cross-sectional view schematically showing an example of a reflection plate (semi-transmission / semi-reflection plate) having a transmission part and a reflection part.

FIG. 16 is a cross-sectional view schematically showing another example (multi-gap structure) of the transflective plate.

[Explanation of symbols]

1st substrate 2 Second substrate 3 Liquid Crystal Material Department 4 Luminous material section 5 Pixel electrodes for liquid crystal material 6 Pixel electrode (anode) for light emitting material 7 Alignment film 8 Seal part 9 Driving IC 10 Driving IC 11 Polarizer 12 backlight 13 Opposing transparent electrodes for liquid crystal material 14 Opposite transparent electrode (cathode) for light emitting material 15 Polarizer

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G02F 1/1335 520 G02F 1/1335 520 5C058 1/1339 505 1/1339 505 5C080 1/1343 1/1343 5C094 1/1347 1/1347 1/1365 1/1365 1/1368 1/1368 G09F 9/33 G09F 9/33 Z 9/35 9/35 9/40 301 9/40 301 G09G 3/20 641 G09G 3/20 641R 642 642C 642F 3/34 3/34 J 3/36 3/36 H04N 5/66 102 H04N 5/66 102A (72) Inventor Naohide Wakita 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 2H089 HA04 HA21 HA33 LA41 NA55 QA16 RA05 RA06 TA02 TA07 TA09 TA17 2H091 FA14Y FA16Y FD06 GA02 GA11 GA13 HA07 HA08 JA02 LA16 2H092 GA12 GA60 HA05 JA05 JA24 JB07 JB08 NA01 PA01 PA06 PA12 QA07 QA08 NE490116 NA03 NC06 NA16 NA16 NA16 NA16 NA02 NF06 NF11 5C006 AA01 AA02 AF46 AF51 AF52 AF53 AF63 AF69 BB12 BB15 BF14 BF24 BF39 EA01 FA21 FA47 5C058 AA06 AB02 AB06 BA08 BA26 5C080 AA10 BB05 DD04 DD26 EE28 FF11 FF12 JJ02 JJ06 5C094 AA06 AA08 AA60 BA03 BA23 BA43 CA19 CA24 EA04 EA07 GA10

Claims (73)

[Claims] 1. A plurality of substrates having electrodes formed on the surface thereof, which are arranged to face each other, a light emitting material portion composed of an organic compound interposed between the plurality of substrates, and a liquid crystal material. And an image display device. 2. The image display device according to claim 1, wherein the surface of any one of the plurality of substrates is:
An image display device having a drive circuit formed therein. 3. A first substrate having an electrode formed on a surface thereof, a second substrate having an electrode formed on the surface thereof, the second substrate facing the first substrate, and the first substrate and the second substrate. An image display device comprising: a light emitting material portion made of an organic compound and a liquid crystal material portion, which are interposed between the substrates in a direction orthogonal to the facing direction of both substrates. 4. The image display device according to claim 3, wherein a drive circuit is formed on a surface of the first substrate or the second substrate. 5. The image display device according to claim 3, wherein active elements for driving a liquid crystal material are arranged in rows and columns in a portion of the surface of the first substrate or the second substrate corresponding to the liquid crystal material portion. The active elements for driving the light emitting material are arranged in a row direction and a column direction in a portion corresponding to the light emitting material portion on the surface of the first substrate or the second substrate. An image display device characterized by the above. 6. The image display device according to claim 3, wherein the electrodes formed on portions of the surfaces of the first substrate and the second substrate corresponding to the liquid crystal material portion are both stripe-shaped electrodes, and The striped electrodes are arranged so that their longitudinal directions intersect with each other in a state of facing each other, and the electrodes formed on the portions corresponding to the light emitting material portions on the surfaces of the first substrate and the second substrate are arranged. An image display device, characterized in that both are stripe-shaped electrodes, and the respective stripe-shaped electrodes are arranged so that their longitudinal directions intersect with each other in a state of facing each other. 7. The image display device according to claim 3, wherein an active element for driving a liquid crystal material is provided in a row direction and a column in a portion of the surface of the first substrate or the second substrate corresponding to the liquid crystal material portion. The electrodes formed in the portions corresponding to the light emitting material portions on the surfaces of the first substrate and the second substrate are striped electrodes, and each striped electrode is An image display device, wherein the image display devices are arranged so that their longitudinal directions intersect with each other while facing each other. 8. The image display device according to claim 3, wherein the electrodes formed on portions of the surfaces of the first substrate and the second substrate corresponding to the liquid crystal material portion are both stripe electrodes. The striped electrodes are arranged so that their longitudinal directions intersect with each other in a state of being opposed to each other, and for driving the light emitting material, a portion corresponding to the light emitting material portion on the surface of the first substrate or the second substrate is driven. The image display device, wherein the active elements of are arranged in a row direction and a column direction. 9. The image display device according to claim 5, 7 or 8, wherein the active element is a thin film transistor element. 10. The image display device according to claim 5, 7 or 8, wherein the active element is a thin film diode element. 11. The image display device according to claim 3, wherein a reflector is arranged between the first substrate or the second substrate and the light emitting material portion and / or the liquid crystal material portion. Image display device. 12. The image display device according to claim 11, wherein the reflector has a light-scattering property. 13. The image display device according to claim 3, wherein the electrode formed on the surface of the first substrate or the second substrate has light reflectivity. . 14. The image display device according to claim 13, wherein the light reflective electrode has a light scattering property. 15. The image display device according to claim 3, wherein the liquid crystal material portion and the light emitting material portion are separately sealed. 16. The image display device according to claim 3, wherein the liquid crystal material portion and the light emitting material portion are sealed while being in contact with each other. 17. The image display device according to claim 3, wherein the light emitting material portion and the liquid crystal material portion are present for each display unit. 18. The image display device according to claim 3, wherein the light emitting material portion and the liquid crystal material portion are present in a check pattern for each unit pixel. 19. The image display device according to claim 1, wherein the light emitting material portion is driven to display an image, or the liquid crystal material portion is driven to display an image. An image display device comprising an automatic selection means for automatically selecting whether to display. 20. The image display device according to claim 19, wherein the automatic selection unit includes an external light detection unit for detecting the amount of external light reaching the display surface, and the external light detection unit. An image display device, comprising: an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section according to a detection result. 21. The image display device according to claim 19, wherein the automatic selection unit identifies an image between a moving image and a still image, and an identification result of the image identification unit. An image display device comprising: an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section. 22. A first substrate having an electrode formed on a surface thereof, a second substrate having an electrode formed on the surface thereof, the second substrate facing the first substrate, and the first substrate and the second substrate. An image display device comprising: a light emitting material portion composed of an organic compound and a liquid crystal material portion, which are interposed between the substrates in the same direction as the facing direction of both substrates. 23. The image display device according to claim 22, wherein a drive circuit is formed on a surface of the first substrate or the second substrate. 24. The image display device according to claim 22, wherein active elements are arranged in a row direction and a column direction on the surface of the first substrate or the second substrate.
An image display device characterized by the above. 25. The image display device according to claim 22, wherein the electrodes formed on the surfaces of the first substrate and the second substrate are both stripe electrodes, and the respective stripe electrodes are mutually An image display device, characterized in that the image display devices are arranged so that their longitudinal directions intersect with each other. 26. The image display device according to claim 24, wherein the active element is a thin film transistor element. 27. The image display device according to claim 24, wherein the active element is a thin film diode element. 28. The image display device according to claim 22, wherein the electrode formed on the surface of the first substrate or the second substrate has light reflectivity. . 29. The image display device according to claim 28, wherein the light reflective electrode has a light scattering property. 30. The image display device according to claim 22, wherein a reflecting plate is disposed between the light emitting material part and the liquid crystal material part. 31. The image display device according to claim 22, wherein a reflecting plate is arranged between the first substrate or the second substrate and the light emitting material portion or the liquid crystal material portion. Characteristic image display device. 32. The image display device according to claim 30, wherein the reflector has a light scattering property. 33. The image display device according to claim 30 or 31, wherein the reflector has a transmissive portion and a reflective portion. 34. The image display device according to claim 33, wherein the reflecting portion has a light scattering property. 35. The image display device according to claim 22, wherein the light emitting material portion is mainly driven to display an image, or the liquid crystal material portion is mainly driven. An image display device comprising an automatic selection means for automatically selecting whether to display an image. 36. The image display device according to claim 35, wherein the automatic selection unit includes an external light detecting unit for detecting the amount of external light reaching the display surface, and the external light detecting unit. An image display device, comprising: an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section according to a detection result. 37. The image display device according to claim 35, wherein the automatic selection unit determines whether an image is a moving image or a still image; An image display device comprising: an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section. 38. A first substrate having an electrode formed on a surface thereof, a third substrate having electrodes formed on both sides of the substrate, the third substrate being arranged so as to face the first substrate, A second substrate having electrodes formed on its surface, which are arranged to face each other; a light-emitting material part made of an organic compound interposed between the first substrate and the third substrate; An image display device comprising: a liquid crystal material portion interposed between a substrate and a second substrate. 39. The image display device according to claim 38, wherein a drive circuit is formed on a surface of the first substrate, the second substrate, or the third substrate. 40. The image display device according to claim 38, wherein active elements are arranged in a row direction and a column direction on a surface of the first substrate or the third substrate, Active elements are arranged in a row direction and a column direction on the surface of the second substrate or the third substrate,
An image display device characterized by the above. 41. The image display device according to claim 38, wherein the electrodes formed on the surfaces of the first substrate and the third substrate are both stripe electrodes, and the respective stripe electrodes are mutually The electrodes are arranged so that their longitudinal directions intersect in a state of facing each other, the electrodes formed on the surfaces of the second substrate and the third substrate are both stripe-shaped electrodes, and the respective stripe-shaped electrodes are mutually An image display device, characterized in that the image display devices are arranged so that their longitudinal directions intersect with each other. 42. The image display device according to claim 38, wherein active elements are arranged in a row direction and a column direction on a surface of the first substrate or the third substrate, The electrodes formed on the surfaces of the second substrate and the third substrate are both striped electrodes, and the striped electrodes are arranged so that their longitudinal directions intersect with each other while facing each other. Characteristic image display device. 43. The image display device according to claim 38, wherein the electrodes formed on the surfaces of the first substrate and the third substrate are both stripe electrodes, and the respective stripe electrodes are mutually Are arranged so that their longitudinal directions intersect with each other in an opposed state, and active elements are arranged in a row direction and a column direction on the surface of the second substrate or the third substrate,
An image display device characterized by the above. 44. The image display device according to claim 40, 42 or 43, wherein the active element is a thin film transistor element. 45. The image display device according to claim 40, 42 or 43, wherein the active element is a thin film diode element. 46. The image display device according to claim 38, wherein a reflection plate is arranged between the third substrate and the liquid crystal material portion and / or the light emitting material portion. Display device. 47. The image display device according to claim 46, wherein the reflector has a light-scattering property. 48. The image display device according to claim 38, wherein the electrodes formed on both surfaces of the third substrate have light reflectivity. 49. The image display device according to claim 48, wherein the electrode having a light-reflecting property has a light-scattering property. 50. The image display device according to claim 38, wherein the light emitting material portion is driven to display an image, or the liquid crystal material portion is driven to display an image. An image display device comprising an automatic selection means for automatically selecting whether to display. 51. The image display device according to claim 50, wherein the automatic selection unit includes an external light detection unit for detecting the amount of external light reaching the display surface, and the external light detection unit includes: An image display device, comprising: an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section according to a detection result. 52. The image display device according to claim 50, wherein the automatic selection unit identifies an image between a moving image and a still image, and an identification result of the image identification unit, An image display device comprising: an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section. 53. Arranged to face each other,
Five or more substrates each having an electrode formed on the surface thereof, a liquid crystal material portion disposed in one of the outermost gaps formed by the five or more substrates, and the gap. Of three or more light-emitting material portions having emission spectra different from each other, which are respectively disposed in the other gaps, and reflection on the surface of the substrate interposed between the liquid crystal material portion and the light-emitting material portion. An image display device comprising: a reflector having a transparent portion and a transparent portion. 54. The image display device according to claim 53, wherein a drive circuit is formed on a surface of any one of the five or more substrates. apparatus. 55. The image display device according to claim 53, wherein the reflecting portion has a light scattering property. 56. The image display device according to claim 53, wherein the liquid crystal material portion is driven to display an image, or the liquid crystal material portion and the light emitting material portion are driven. An image display device comprising an automatic selection means for automatically selecting whether to display an image. 57. The image display device according to claim 56, wherein the automatic selection unit includes an external light detection unit for detecting the amount of external light reaching the display surface, and the external light detection unit. An image display device comprising: an automatic switch unit for automatically switching between driving the liquid crystal material portion or driving both the liquid crystal material portion and the light emitting material portion according to the detection result. . 58. The image display device according to claim 1, wherein the liquid crystal material portion is made of a TN liquid crystal material. 59. The image display device according to claim 1, wherein the liquid crystal material portion is a guest-host liquid crystal material, a polymer dispersed liquid crystal material, or a polymer network liquid crystal. An image display device comprising a material. 60. Arranged to face each other,
A method for driving an image display device having a plurality of substrates each having an electrode formed on the surface thereof, and a light emitting material portion formed of an organic compound interposed between the plurality of substrates, and a liquid crystal material portion, A method of driving an image display device, wherein the light emitting material portion and the liquid crystal material portion are driven by different driving methods. 61. The driving method of an image display device according to claim 60, wherein driving of the light emitting material portion is active matrix driving, and driving of the liquid crystal material portion is simple matrix driving. And a method for driving an image display device. 62. The driving method of the image display device according to claim 60, wherein the driving of the light emitting material portion is simple matrix driving.
The driving method of the image display device is characterized in that the liquid crystal material portion is driven by active matrix driving. 63. Arranged to face each other,
A method for driving an image display device having a plurality of substrates each having an electrode formed on the surface thereof, and a light emitting material portion formed of an organic compound interposed between the plurality of substrates, and a liquid crystal material portion, A method of driving an image display device, wherein the light emitting material portion and the liquid crystal material portion are driven by the same type of driving method. 64. The driving method of an image display device according to claim 63, wherein the driving of the light emitting material portion and the liquid crystal material portion are both active matrix driving. . 65. The method of driving an image display device according to claim 63, wherein the driving of the light emitting material portion and the liquid crystal material portion are both simple matrix driving. . 66. Arranged to face each other,
Five or more substrates each having an electrode formed on the surface thereof, and a liquid crystal material portion arranged in one of the outermost gaps formed by the five or more substrates,
Three or more light emitting material portions having emission spectra different from each other, which are respectively disposed in the other of the gaps, and disposed on the surface of the substrate interposed between the liquid crystal material portion and the light emitting material portion. A driving method of an image display device having a reflecting plate having a reflecting portion and a transmitting portion, wherein the three or more light emitting material portions are time-divisionally driven,
A driving method of an image display device, characterized in that the liquid crystal material portion is driven in accordance with the time division driving. 67. A first substrate having an electrode formed on a surface thereof, a second substrate having an electrode formed on the surface thereof, which is opposed to the first substrate, and the first substrate and the second substrate. A light emitting material portion and a liquid crystal material portion made of an organic compound, which are interposed between the substrates in a direction orthogonal to the facing direction of both substrates, are provided, and the amount of external light reaching the display surface is detected. And an automatic switch unit for automatically switching between driving the light emitting material portion and driving the liquid crystal material portion in accordance with the detection result of the external light detecting portion. The method for selectively displaying the image display device, wherein when the external light detection unit determines that the external light is scarce, the automatic switch unit is switched to drive the light emitting material unit to display an image. When the light detector determines that the amount of outside light is abundant Selection display method of the image display apparatus and displaying an image by driving the liquid crystal material portion is switched by the automatic switching unit. 68. A first substrate having an electrode formed on a surface thereof, a second substrate having an electrode formed on the surface thereof, which is opposed to the first substrate, and the first substrate and the second substrate. An image identification for identifying a moving image or a still image, which is provided with a light emitting material portion composed of an organic compound and a liquid crystal material portion which are interposed between the substrates in a direction orthogonal to the facing direction of both substrates. Of an image display device including an automatic selection unit having an automatic switch unit for automatically switching between driving the light emitting material unit and driving the liquid crystal material unit according to the identification result of the image identifying unit. In the display method, when the image identification unit determines that the image is a moving image, the automatic switch unit switches the light emitting material unit to display an image, and the image identification unit determines that the image is a still image. The automatic switch section Selection display method of the image display apparatus and displaying an image by driving the liquid crystal material portion is switched. 69. A first substrate having an electrode formed on a surface thereof, a second substrate having an electrode formed on the surface thereof facing the first substrate, and the first substrate and the second substrate. Intervening in the state of being aligned in the same direction as the opposing direction of both substrates,
An external light detection unit for detecting the amount of external light reaching the display surface, comprising a light emitting material section and a liquid crystal material section made of an organic compound, and depending on the detection result of the external light detection section, A method of selectively displaying an image display device, comprising: an automatic selection unit having an automatic switch section for automatically switching between driving of a light emitting material section and driving of a liquid crystal material section. When it is determined that the external light is insufficient, the automatic switch unit is switched to mainly drive the light-emitting material unit to display an image, and when the external light detection unit determines that the external light is abundant, the automatic switch is used. A selective display method of an image display device, characterized in that an image is displayed by switching the liquid crystal material portion mainly to drive the liquid crystal material portion. 70. A first substrate having an electrode formed on a surface thereof, a second substrate having an electrode formed on the surface thereof, the second substrate facing the first substrate, and the first substrate and the second substrate. Intervening in the state of being aligned in the same direction as the opposing direction of both substrates,
An image discriminating portion including a light emitting material portion composed of an organic compound and a liquid crystal material portion, for discriminating between a moving image and a still image, and driving the light emitting material portion according to the discrimination result of the image discriminating portion. A selective display method of an image display device comprising an automatic selection means having an automatic switch section for automatically switching between driving of a liquid crystal material section, wherein when the image identification section determines that the moving image is a moving image, An image is displayed by switching the automatic switch unit to mainly drive the light emitting material unit, and when the image identifying unit determines that the image is a still image, switches the automatic switch unit to drive the liquid crystal material unit mainly. A method for selectively displaying an image display device, which displays an image. 71. A first substrate having an electrode formed on a surface thereof, a third substrate having electrodes formed on both sides of the substrate, the third substrate being arranged so as to face the first substrate, A second electrode having electrodes formed on the surface thereof, which are arranged so as to face each other.
And a substrate interposed between the first substrate and the third substrate,
A light emitting material portion formed of an organic compound, and a liquid crystal material portion interposed between the third substrate and the second substrate,
In order to automatically switch the driving of the light emitting material portion and the driving of the liquid crystal material portion according to the detection result of the external light detecting portion and the external light detecting portion for detecting the amount of the external light reaching the display surface. A method for selecting and displaying an image display device comprising an automatic selection means having an automatic switch section, wherein when the external light detection section determines that the external light is scarce, the automatic switch section switches the light emitting material. And driving the liquid crystal material portion to display an image when the external light detecting portion determines that the external light is abundant. Image display device selection display method. 72. A first substrate having an electrode formed on a surface thereof, a third substrate having electrodes formed on both sides of the substrate, the third substrate being arranged so as to face the first substrate, A second electrode having electrodes formed on the surface thereof, which are arranged so as to face each other.
And a substrate interposed between the first substrate and the third substrate,
A light emitting material portion formed of an organic compound, and a liquid crystal material portion interposed between the third substrate and the second substrate,
An image identification section for identifying whether it is a moving image or a still image, and an automatic switch section for automatically switching between driving the light emitting material section and driving the liquid crystal material section according to the identification result of the image identifying section. A method of selecting and displaying an image display device comprising an automatic selecting means having, wherein when the image discriminating unit determines that the moving image is displayed, an image is displayed by driving the light emitting material unit by switching by the automatic switch unit, A method for selecting and displaying an image display device, wherein when the image identification unit determines that the image is a still image, the image is displayed by driving the liquid crystal material portion by switching the automatic switch unit. 73. Arranged to face each other,
Five or more substrates each having an electrode formed on the surface thereof, and a liquid crystal material portion arranged in one of the outermost gaps formed by the five or more substrates,
Three or more light emitting material portions having emission spectra different from each other, which are respectively disposed in the other of the gaps, and disposed on the surface of the substrate interposed between the liquid crystal material portion and the light emitting material portion. The external light detection unit for detecting the light amount of the external light reaching the display surface, comprising a reflection plate having a reflection unit and a transmission unit, and according to the detection result of the external light detection unit,
A selective display method of an image display device comprising an automatic selection unit having an automatic switch section for automatically switching between driving the liquid crystal material section or driving both the liquid crystal material section and the light emitting material section. When the external light detection unit determines that the external light is scarce, the automatic switch unit switches the light emitting material unit and the liquid crystal material unit to display an image, and the external light detection unit outputs the external light. When it is determined that there is abundance, the selective display method of the image display device is characterized in that the automatic switch section is switched to drive the liquid crystal material section to display an image.