JPH0998267A - Image input output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the convenience of use, to make the luminance distribution of a lighting means uniform and to attain high luminance. SOLUTION: In the image input output means whose one side has a 2-dimension image input use read means and an image processing means processing an image entered by the image input use read means and whose other side has a 2-dimensional image output display means, the read means is provided with a 1st 2-dimensional lighting means 4 lighting an original and a 2-dimensional photoelectric conversion element 3, an image output display means is provided with an optical transmission display element 1 displaying a 2-dimensional image and a 2nd 2-dimensional lighting means 2. Then at least one of the 1st and 2nd lighting means 4, 2 has an optical incident face at one or both ends and a 1-dimension EL light source are arranged side by side in a way of 2-dimension, and both an original and the optical transmission display element between the read means and the display means, re illuminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input / output device, and more particularly to an image input / output device equipped with a portable and compact two-dimensional image input device for reading an original and a two-dimensional display device for displaying an image. is there.

[0002]

2. Description of the Related Art As a conventional portable image input / output device, a combination of an image input device such as a one-dimensional handy scanner or a one-dimensional image reader and an image output device such as a liquid crystal display is often used. However, in such a portable image input / output device, a person who operates a scanner, which is an image input / output device, moves on a document.
Or, it is necessary to mechanically scan, and therefore there is a problem that the scanning speed is improper or the like, which causes a reading failure, which is inconvenient to use, and a device for scanning becomes large. Further, since a separate scanner is required in addition to the display device, the structure is complicated and the cost is increased, and there is a problem in portability.

Therefore, in recent years, a two-dimensional image input device and a two-dimensional image input device have been used.
There has been proposed a method of reading a document and displaying an image on the same surface by stacking image output devices such as a three-dimensional liquid crystal display.

For example, in Japanese Unexamined Patent Publication No. 4-282609, for image output, a transparent substrate is provided with a TFT for driving liquid crystal and a liquid crystal on an image sensor substrate having an image sensor for image input on a transparent substrate. An example in which the liquid crystal display substrates are stacked is shown.

Further, Japanese Patent Laid-Open No. 5-244346 discloses an example in which an image sensor substrate is superposed on a liquid crystal display substrate.

In both examples, as shown in FIG. 19, since the image input surface and the image output surface are common, the main body having the image output surface is separated from the scanner section or the image output surface independent from the conventional one. It becomes possible to reduce the size and cost of the entire apparatus because the image input surface is not needed.

[0007]

However, in the above-mentioned image input / output device that has been recently announced, since the image input / output surface is the same as shown in FIG. 19, the entire device is turned over to read the original. In order to display the read image and visually confirm the read image, it is necessary to turn over the entire apparatus and make the inside out image output surface visible again.

Even if the original is read by placing the original on the image input / output surface without turning over the entire apparatus downward, the read image is displayed and the image is visually confirmed. In order to do so, it is indispensable to remove the manuscript read by the operator.

As described above, in the above-mentioned conventional example, since the image input surface and the image output surface are the same, when performing image input and image output alternately, it is necessary to turn over the entire image input device each time, and the usability is improved. There was a problem of being bad.

[0010]

The image input / output device of the present invention has a two-dimensional image input reading means arranged on one side,
An image processing unit for processing an image input by the reading unit is provided, and a two-dimensional image output display unit is arranged on the other side which is a back side of the one side, and the two-dimensional image input reading unit is A two-dimensional first illuminating means for illuminating a document and a light signal reflected from the document for conversion into an electric signal 2
A two-dimensional image output display means, the two-dimensional image output display means includes a light-transmissive display element for displaying a two-dimensional image and a two-dimensional second illumination means for illuminating the light-transmissive display element. At least one of the two-dimensional first and second illuminating means is a two-dimensional array of one-dimensional EL light sources.

The image input / output device of the present invention has a double-sided structure.
Dimensional image input reading means is arranged, and image processing means for processing the image inputted by the reading means is provided, and two-dimensional image output display means is arranged on the other side which is the back side of the one side. The two-dimensional image input reading means converts an optical signal reflected from a document into an electric signal.
A two-dimensional image output display means, the two-dimensional image output display means includes a light-transmissive display element for displaying a two-dimensional image, and the two-dimensional image input reading means and the two-dimensional image input display means. Between the image output display means, there is provided an illumination means for illuminating both the original document and the light transmissive display element, in which one-dimensional EL light sources are two-dimensionally arranged in parallel.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the operation of the present invention will be described prior to the description of the embodiments of the present invention.

According to the image input / output device of the present invention, the two-dimensional image input reading means is arranged on one side, and the two-dimensional image output display means is arranged on the other side which is the back side of the one side. Not only can the size and cost of the entire device be reduced, but because the image input surface and image output surface are different, the image information read by simply placing it on the original with the image input surface facing downward and the image output surface facing upward. Can be displayed in real time on the top image output surface,
Usability is improved.

Further, in the image input / output device of the present invention, by using one-dimensional EL light sources arranged two-dimensionally in parallel as the illuminating means, not only the entire device can be downsized and the cost can be reduced, but also Since the EL light source has a very uniform distribution of illumination light, the light diffusion layer is unnecessary. Furthermore, it becomes possible to illuminate each one-dimensional EL light source independently, and in the reading means and the illuminating means, it is possible to illuminate only the portion to be illuminated, saving power consumption and lowering the amount of heat generation. It becomes possible to do.

In the image input / output device of the present invention, the illumination device for illuminating the original document and the illumination device for illuminating the light-transmissive display element are configured as the same double-sided light source, so that the entire device is further improved. The size and cost can be reduced.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. [Embodiment 1] FIG. 1 is a schematic partial cross-sectional perspective view of an image input / output apparatus according to a first embodiment of the present invention, and FIGS. 2 to 4 respectively show an original in an image reading state of the present embodiment. The schematic perspective view for demonstrating an example of the state of an image input / output device is shown.

In the image input / output device of this embodiment shown in FIG. 1, a light transmission type display element, for example, an image output section (image output display means) 1 such as a liquid crystal display is arranged on the surface so as to face upward in the drawing. A backlight 2 for illuminating the liquid crystal display from the back is arranged on the back.
Further, an image input unit (image input reading means) 3 such as a two-dimensional image sensor having an amorphous silicon sensor formed on a transparent substrate on the back side is arranged downward in the drawing, and the amorphous silicon is provided on the back side thereof. A reading light source 4 that irradiates the document surface through the sensor elements is arranged.

Spaces 9 and 1 are provided between the image output unit 1 and the backlight 2 and between the image input unit 3 and the reading light source 4, respectively.
0 is formed. It should be noted that this space is provided in order to irradiate the light from each light source more uniformly, and if sufficient uniform illumination is performed, this space is unnecessary, and further homogenization will be achieved if necessary. Therefore, a light guide may be arranged.

Both the backlight 2 and the reading light source 4 are attached to a partition 5 extending from the housing 8 to separate the image output unit 1 side and the image input unit 3 side. However, the partition 5 is not always necessary.

The image input / output device 30 is provided with a keyboard portion 6 so that the on / off of the device 30 and various functions for reading and displaying can be selected and executed. The circuit unit 7 is provided in the device 30, and when the device 30 has a power source such as a battery, an image processing unit driven by using the power source,
IC for driving and controlling memory, each function or each part
And a control unit including.

The image information read from the image input unit 3 is stored in the memory of the circuit unit 7, and then the image processing unit performs image processing. The information on which the image processing has been performed is displayed on the image output unit 1, or after being stored in the memory, displayed on the image output unit 1.

Of course, the power source may be supplied from the outside of the apparatus, and may have a voltage adjusting circuit as needed.

The device 30 may be driven not only by the keyboard section 6 but also by a command command from another external device such as a computer. By using the keyboard unit 6 and commands, it is possible to change or switch display or reading conditions as necessary such as reading, enlarging or reducing a displayed image, moving, changing contrast, changing color, and inverting image.

As the light source of the backlight 2 and the reading light source 4, solid-state light emitting devices such as LEDs and EL, fluorescent lamps, discharge tubes such as xenon discharge tubes, or various power sources such as halogen lamps can be used. These light sources are devices 30
Is appropriately selected depending on the size, weight, brightness of the light source, and the like.

The backlight 2 is provided with a discharge tube, and the reading light source 4 is provided.
Taking the example of using an LED as the backlight, the backlight 2
Need only be supplied from a lighting power supply having an inverter circuit, and the reading light source 4 can be supplied from a DC power supply. In the present embodiment, as described below, the light source E
L light source is used.

Next, the state of the image input / output device during driving will be described with reference to FIGS.

In FIG. 2, the image (here, characters) drawn on the original 20 is read by the image input section 3 having a two-dimensional image sensor on one surface (lower surface) of the image input / output device 30, and at the same time the image input / output is performed. The state in which the read information is displayed on the image output unit having the display on the other surface (upper surface) of the device 30 is shown.

FIG. 3 illustrates the same state as FIG. 2, but as shown in the figure, the image input / output device 30 and the original 2 are shown.
It is shown that the display content also changes due to the relative movement with 0.

FIG. 4 shows a state in which the information read by the image input section 3 is enlarged and displayed on the image output section 1 by operating the keyboard section 6 or the like. This state is an electronic magnifying glass (that is, a magnifying glass that enlarges electrically rather than optically) because the image of the document 20 is enlarged and displayed.
Even in this mode, the document 2 of the image input / output device 30 is normally used.
The display image changes due to the movement relative to 0.

Next, the operation when the present embodiment is used as an electronic loupe will be described with reference to the flowchart of FIG. 7, the sectional perspective view of FIG. 1 and the operating state perspective views of FIGS.

First, the case where the electronic loupe is used as a moving image, that is, the case where reading and display are performed in real time will be described.

First, the image input / output device 30 is placed on the original 20 to be read. Then, the power switch is turned on and the [read] key on the keyboard 6 is pressed. The state at that time is shown in FIG.

Next, the position of the image input / output device 30 of this embodiment is finely adjusted to the position of the character to be enlarged.

The state at that time is shown in FIG. In the view of FIG. 3, it is aligned with the letter “C”.

Next, when the [Enlarge] key on the keyboard section 6 is pressed once, the character "C" displayed on the image output section 1 of the liquid crystal display becomes double in size. The state at that time is shown in FIG.

The series of operations shown in FIGS. 2 → 3 → 4 will be described with reference to the flowchart of FIG. 7. Two-dimensional image input of (a) → image processing [enlargement] → (e) of (c) ) Can be represented by a flow chart of 2D image output.

Next, a case where the electronic magnifying glass is used as a still image, that is, a case where the read image is once stored in the memory, image processing is performed, and the image is displayed again on the image output unit 1 of the liquid crystal display will be described.

As in the case of using as a moving image, the power switch is turned on and the [Read] key on the keyboard 6 is pressed to finely adjust the position on the document. The state at that time is shown in FIG. 3, and the position of the image input / output device is aligned with the character “C”.

Next, the [memory] key on the keyboard 6 is pressed. Then, the image being read is stored in the memory. In that state, the [memory display] key on the keyboard 6 is pressed. By doing so, the image stored in the memory is displayed on the image output unit 1 of the liquid crystal display. The state at that time is shown in FIG.

Next, in the state shown in FIG. 5, the [Enlarge] key on the keyboard 6 is pressed. Then, the character "C" displayed on the image output unit 1 of the liquid crystal display is doubled in size. The state at that time is shown in FIG. From this state, the [memory] key on the keyboard 6 is pressed again. Then, since the enlarged character "C" is stored in the memory even when the power is turned off, it is possible to display it again by turning the power on.

The series of operations of FIG. 3 → FIG. 5 → FIG. 6 will be described with reference to the flowchart of FIG. 7. Two-dimensional image input of (a) → memory of (b) → image processing of (c) It can be represented by a flow chart of [enlargement] → (d) memory → (e) two-dimensional image output.

Next, the image processing [enlargement] of (c) shown in FIG. 7 will be described. FIG. 8 is a flowchart of image processing [enlargement]. Here, as an example, the image input unit and the image output unit are arranged two-dimensionally with 400 × 400 pixels each having a size of 5 × 5 per 1 mm in length and width, and 400 × 400 pixels in a memory for storing image data. As shown in FIG. 9, 400 pieces of data include DAT (1,1) to DAT (40
0,400) is present.

In FIG. 8, when the present embodiment is used as an electronic loupe, that is, when the [enlarge] switch is pressed,
The 400 × 400 data in the memory is changed based on the flowchart of FIG.

That is, the image processing S1 is performed in the case of the display of the same size.
Is not enlarged, the determination of enlargement (S2) is NO, and the same size processing (S3) is selected, and the input data is used as it is as output data (S4).

Next, in the enlarged display (in the case of enlarging the image twice), the enlargement determination (S2) is YES, so it is determined whether m is an even number or an odd number (S5). Since it is determined in FIG. 8 whether m is an odd number, if m is an even number, the process proceeds according to NO, and it is subsequently determined whether n is an odd number (S
6). Then, if n is an even number, the data is converted to S7, and if n is an odd number, the data is converted according to S8.

When m is an odd number, Y is obtained in S5.
Although ES is selected, it is similarly determined whether or not n is an odd number (S9), and if n is an even number, the data is converted to S10, and if n is an odd number, the data is converted according to S11.

As described above, the data DAT in the m-th row and the n-th column
The conversion formula for (m, n) differs depending on whether m and n are even or odd, and is determined by four conversion formulas as shown in FIG. As a result, 100 × 100 pieces of data in the two-dimensional data are doubled in both the X-axis and Y-axis directions.

Of course, the above processing can be appropriately changed according to the difference in magnification and the number of pixels, and is not limited to the above processing method.

Next, a configuration example of the backlight 2 and the document reading light source 4 shown in FIG. 1 will be shown. Since the illumination means of the backlight 2 and the original reading light source 4 has been proposed by us before (Japanese Patent Laid-Open No. 6-217084), description will be made based on it, but the previously proposed contents are mainly one-dimensional. As a configuration example of the two-dimensional illumination means used in the present embodiment, the one-dimensional illumination means may be arranged in parallel.

FIGS. 10 and 11 show EL (electro
It is an example using luminescence 33 and is a cross-sectional view of an illumination means in which illumination means in a one-dimensional direction is two-dimensionally arranged.
In FIG. 10, the transparent member 77 has a prism shape. A part of the luminous flux emitted from the light emitting portion 33a of the EL 33 passes through the translucent member 77 and goes upward as it is, and a part thereof goes toward the light emitting portion 33b. The light directed to the light emitting portion 33b is changed by the angle of the light beam incident on the other surface of the translucent member.
Alternatively, it is reflected upward by total reflection on the inner surface of the translucent member 77 or by diffuse reflection by the phosphor of the light emitting portion 33b. The same applies to the luminous flux emitted from the light emitting portion 33b.

In FIG. 11, the light emitting portions 33a and 33a are provided.
The luminous flux emitted from b goes upward as it is. Since the EL light source has a very uniform distribution of illumination light, the light diffusion layer used conventionally is not necessary. Further, since the material is a very thin structure, it is easy to downsize the device. Further, since the diffusion layer is not necessary, it can be placed in close contact with the image input section and the image output section, and it is possible to perform illumination with high intensity.

Further, by arranging a plurality of one-dimensional EL light sources in parallel to form a two-dimensional illumination means, it becomes possible to independently illuminate each one-dimensional EL light source. In the reading means and the illuminating means, it is possible to illuminate only the portion to be illuminated, which makes it possible to save power consumption and reduce the amount of heat generation.

As described above, the illumination means shown in this configuration example is
It is possible to illuminate small and uniform illumination with high intensity,
Further, the structure is simple and the manufacturing process can be simplified. In addition, a display device that can perform stable display,
Also, it is possible to provide an image reading device capable of performing stable image reading.

As described above, in the present embodiment, the loupe function for enlarging the characters on the original can be easily obtained by a small and portable device that fits in the palm of the hand.

The image input / output device of the present invention is not limited to that shown in this embodiment. That is, 2 on one side
Dimensional image input reading means is arranged, and image processing means for processing the image inputted by the reading means is provided, and two-dimensional image output display means is arranged on the other side which is the back side of the one side. If you have.

Therefore, the two-dimensional image input reading means is not only an image sensor of amorphous silicon which can be manufactured at a low cost and has a large screen, but also a microcrystalline silicon and polycrystalline silicon image sensor capable of high-speed reading, and a light source. An infrared sensor or an ultraviolet sensor that can be detected by using infrared rays or ultraviolet rays may be used.

Further, although the present embodiment does not constitute a recording means such as a printer, it goes without saying that it is easily conceivable to configure the image input / output device of the present invention into a recording means such as a printer. [Second Embodiment] A second embodiment of the present invention will be described below with reference to the drawings. FIG. 12A is a sectional perspective view of the image input / output device according to the second embodiment of the present invention. FIG.
FIG. 1B is a sectional perspective view of an image input / output device according to a mode of the present invention.

The image input / output device of the second embodiment shown in FIG. 12A differs from the image input / output device of the first embodiment shown in FIG. 1 in that the image input part 3 and the image output part 1 of the liquid crystal display are different from each other. A double-sided light source 12 that doubles as a light source for reading an original that illuminates the surface of the original through the amorphous silicon sensor elements and a backlight for displaying a liquid crystal display is disposed between the two.

In FIG. 12A, as shown in FIG. 13, the double-sided light source 12 is a one-dimensional EL light source and light sources 35 capable of irradiating both sides are arranged two-dimensionally in parallel.

Since the operation of this embodiment is substantially the same as that described in the first embodiment, detailed description will be omitted.

As described above, in the present embodiment, the light source is commonly used for the image input section and the image output section, so that further miniaturization can be achieved. In addition, by using a common light source, power consumption can be reduced, the battery capacity and the power supply circuit can be further downsized, and this contributes to downsizing of the entire device. Further, it is possible to achieve a substantial downsizing of a circuit and a light source without changing the battery capacity, and it becomes possible to drive for a longer time by using a battery having the same capacity.

The configuration shown in FIG. 12B is for reference only, and has a light source 121 such as a fluorescent lamp and a light guide 120, and the light from the light source 121 receives light from the light guide 12.
The light guide 12
The light emitted from 0 is used as the light emitted from one surface for the image input section, and the light emitted from the other surface is used as the image output section.

However, when the light emitted for the image input section reaches the surface of the original such as paper, it is reflected by the surface and a part of it can be used as irradiation light for illuminating the image output section through the light guide. is there.

Therefore, when the image is not read, for example, when the image stored in the memory is displayed,
If possible, a brighter display image can be obtained by mounting the image input / output device on a blank sheet on which characters and the like are not drawn. [Embodiment 3] FIG. 14 is an overall circuit diagram of an image input section showing an image input section in an image input / output apparatus showing a third embodiment of the present invention, and FIG. 15A shows one pixel in the present embodiment. A plan view of corresponding constituent elements, and FIG.
It is B sectional drawing. In FIG. 14, S11 to S33 are photoelectric conversion elements, and the lower electrode side is indicated by G and the upper electrode side is indicated by D. C11 to C33 are storage capacitors, T11 to T3
Reference numeral 3 denotes a transfer TFT. Vs is a read power supply, Vg
Is a power supply for refreshing, and switches SW
G of all photoelectric conversion elements S11 to S33 via s and SWg
Connected to the electrodes. The switch SWs is directly connected to the refresh control circuit RF via an inverter, and the switch SWg is directly connected to the refresh control circuit RF.
During n and other periods, SWs is controlled to be on. One pixel is composed of one photoelectric conversion element, a capacitor, and a TFT, and its signal output is connected to the detection integrated circuit IC by a signal wiring SIG. The photoelectric conversion device of this embodiment divides a total of nine pixels into three blocks
The outputs of 3 pixels per block are simultaneously transferred, and are sequentially converted to an output by the detection integrated circuit through the signal wiring and output. Further, the three pixels in one block are arranged in the horizontal direction, and the three blocks are arranged vertically in order to arrange the respective pixels two-dimensionally.

The part surrounded by the broken line in the figure is formed on the same large-sized insulating substrate, and a plan view of the part corresponding to the first pixel is shown in FIG. 15 (a). S11 is a photoelectric conversion element, T11 is a TFT, C11 is a capacitor, and SIG is a signal wiring. In this embodiment, the capacitor C11 and the photoelectric conversion element S11 are not specially separated, but the capacitor C11 is formed by increasing the area of the electrode of the photoelectric conversion element S11. This is possible because the photoelectric conversion element and the capacitor of the present embodiment have the same layer structure, which is also a feature of the present embodiment. Further, FIG. 15B shows a sectional view of a portion indicated by a broken line AB in the drawing. Further, a silicon nitride film SiN for passivation is formed on the pixel.

It is not always necessary that the silicon nitride film be stoichiometric. Further, another film such as a silicon oxide film or a silicon carbide film may be used as long as it can be used for passivation.

Further, in FIG. 15B, 102 is C
A lower electrode such as r, 107 is an insulating layer such as SiN, 104 is an i-type photoelectric conversion semiconductor layer, 105 is an n-type hole injection blocking layer, and 106 is an upper electrode.

Amorphous silicon containing hydrogen can be preferably used for the i-type photoelectric conversion semiconductor layer 104. However, as long as it is a semiconductor layer capable of photoelectric conversion and constituting a TFT, a semiconductor material such as amorphous silicon containing microcrystals, microcrystalline silicon, or polycrystalline silicon may be used. Furthermore, it is preferable that the semiconductor material contains a hydrogen atom, but this may contain a halogen atom, or both a hydrogen atom and a halogen atom may be contained at the same time.

In FIG. 15B, the original irradiation light is applied to the original from the back surface side (the lower side in the drawing) of the photoelectric conversion element portion, and the reflected light is incident on the photoelectric conversion element.

The operation of this embodiment will be described with reference to FIG. 15B. In the refresh operation, an electric field is applied so as to guide holes from the semiconductor layer 104 to the upper electrode 106 side, and the semiconductor layer 104 is generated in the photoelectric conversion operation. The holes are retained in the semiconductor layer 104 and electrons are allowed to enter the upper electrode 1.
An electric field is applied so as to lead to the 06 side, and holes accumulated in the semiconductor layer 104 by the photoelectric conversion operation or electrons led to the upper electrode side are detected.

In the present embodiment, the G electrodes of the photoelectric conversion elements are commonly connected, and this common wiring is controlled to the potentials of the refreshing power source Vg and the reading power source Vs via the switches SWs and SWg. , All the photoelectric conversion elements can be simultaneously switched to the refresh operation and the photoelectric conversion operation. Therefore, it is possible to obtain an optical output with one TFT per pixel without performing complicated control.

Next, the operation of the photoelectric conversion device of this embodiment will be described with reference to FIGS. 14 and 16. FIG. 16 is a timing chart showing the operation of this embodiment.

First, the shift registers SR1 and SR
2 applies Hi to the control wires g1 to g3 and s1 to s3. Then, the transfer TFTs T11 to T33 and the switches M1 to M3 turn on and become conductive, and all the photoelectric conversion elements S11 to S11.
The D electrode of S33 becomes the GND potential (integral detector Amp
Since the input terminal of is designed to GND potential). At the same time, the refresh control circuit RF outputs Hi and the switch S
When Wg is turned on, the G electrodes of all the photoelectric conversion elements S11 to S33 become positive potential by the refresh power supply Vg. Then, all the photoelectric conversion elements S11 to S33 are refreshed and refreshed. Next, refresh control circuit RF
The switch SWs is turned on, and the G electrodes of all the photoelectric conversion elements S11 to S33 are turned to a negative potential by the reading power supply Vs. Then, all the photoelectric conversion elements S11 to S33 perform a photoelectric conversion operation, and at the same time, the capacitors C11 to C33 are initialized. In this state, shift resists SR1 and S
Lo is applied to the control lines g1 to g3 and s1 to s3 by R2. Then, the transfer TFTs T11 to T33 and the switches M1 to M3 are turned off, and all the photoelectric conversion elements S11 to S11.
The D electrode of 33 is a capacitor C that is open in terms of DC.
The potential is held by 11 to C13. However, since no irradiation light is incident at this point, all photoelectric conversion elements S
No light is incident on 11 to S33 and no photocurrent flows. When the irradiation light is emitted in a pulsed or continuous manner in this state and is applied to the document, the reflected light is reflected by each photoelectric conversion element S.
It enters 11 to S33. This light contains information about the image of the document. The photocurrent flowing by this light is accumulated in each of the capacitors C11 to C33 as an electric charge, and is retained even after the irradiation of the incident light is completed. Next, the shift register S
A control pulse of Hi is applied to the control wiring g1 by R1, and the transfer TFTs T11 to T13 are transferred by the control pulse application to the control wirings s1 to s3 of the shift register SR2.
V1 to v3 are sequentially output through the switches M1 to M3. Similarly, other optical signals are output under the control of the shift registers SR1 and SR2. As a result, two-dimensional information on the document is obtained as v1 to v9. The operation up to this point is performed to obtain a still image, but the operation up to here is repeated to obtain a moving image.

In the present embodiment, nine pixels are two-dimensionally arranged in 3 × 3 and three pixels are simultaneously transferred and output in three divisions, but the present invention is not limited to this. For example, 5 × 5 per 1 mm in length and width. By arranging 2000 × 2000 pixels two-dimensionally, a 40 cm × 40 cm image input section can be obtained.

17 and 18 show an example in which 2000 × 2000 pixels are two-dimensionally arranged. 17 shows an example in which a driving IC and a reading IC are arranged on two sides of the image input section, and FIG. 18 shows an example in which a driving IC and a reading IC are arranged on four sides of the image input section.

Although a large-area image input section having such a large number of pixels cannot be formed by a complicated process using a conventional photosensor, the process of this image input section uses common elements. Since it is formed with different films at the same time, the number of processes is small, and simple processes are sufficient, so high yield is possible, and it is possible to produce a large area and high performance image input unit at low cost. In addition, the capacitor and the photoelectric conversion element can be configured in the same element, the element can be substantially halved, and the yield can be further improved.

As is clear from the above description, the photoelectric conversion element according to the third embodiment of the present invention is not limited to that shown in the third embodiment. That is, there are a first electrode layer, an insulating layer that blocks movement of holes and electrons, a photoelectric conversion semiconductor layer, and a second electrode layer, and a photoelectric conversion semiconductor layer is provided between the second electrode layer and the photoelectric conversion semiconductor layer. It suffices if there is an injection blocking layer that blocks the injection of holes. In the above description, holes and electrons may be reversed. For example, the injection blocking layer may be a p-layer. In this case, in the third embodiment, if the application of the voltage or the electric field is reversed and the other components are configured, the same operation is performed. Further, the photoelectric conversion semiconductor layer may have a photoelectric conversion function of receiving light and generating electron-hole pairs. The layer structure may not be a single layer but may be a multilayer structure, and the characteristics may be continuously changed.

Similarly, the TFT may have a gate electrode, a gate insulating film, a semiconductor layer capable of forming a channel, an ohmic contact layer, and a main electrode. For example, the ohmic contact layer may be a p-layer, and in this case, the voltage for controlling the gate electrode may be reversed and holes may be used as carriers.

Similarly, a capacitor may have a lower electrode, an intermediate layer including an insulating layer, and an upper electrode. For example, even if it is not separately separated from a photoelectric conversion element or a TFT, it may be used also as an electrode section of each element. good.

Furthermore, the insulating substrate does not have to be an insulator, but may be a conductor or a semiconductor on which an insulator is deposited.

Further, since the photoelectric conversion element itself has a function of accumulating electric charges, it is possible to obtain an integrated value of optical information for a certain period without a special capacitor.

[0082]

As described above, according to the image input / output device of the present invention, the two-dimensional image input reading means is arranged on one side, and the other side, which is the back side of the one side, is used for the two-dimensional image output. Display means is arranged, and the two-dimensional image input reading means includes a two-dimensional first illuminating means for illuminating a document and a two-dimensional photoelectric conversion element for converting an optical signal reflected from the document into an electric signal. The two-dimensional image output display means includes a light-transmissive display element for displaying a two-dimensional image and a two-dimensional second illumination means for illuminating the light-transmissive display element. The two-dimensional first and second illuminating means are one-dimensional EL light sources arranged two-dimensionally in parallel, and not only can the overall size of the device be reduced and the cost can be reduced, but the EL light source can emit illumination light. Has a very uniform distribution of Light diffusion layer is not required. Further, since the material is a very thin structure, it is easy to downsize the device. Further, since the diffusion layer is unnecessary, it is possible to closely arrange the image input unit and the image output unit, and it is possible to perform illumination with high intensity.

Further, by arranging a plurality of one-dimensional EL light sources in parallel to form a two-dimensional illumination means, it becomes possible to illuminate each one-dimensional EL light source independently. In the reading means and the illuminating means, it is possible to illuminate only the portion to be illuminated, which makes it possible to save power consumption and reduce the amount of heat generation.

As described above, the illuminating means according to the present invention is capable of illuminating a compact and uniform illumination with high intensity, and further has a simple structure and a simplified manufacturing process. in addition,
Since it is possible to illuminate only the portion to be illuminated, it is possible to provide a display device that can perform stable display with low power consumption and an image reading device that can perform stable image reading.

Further, since the image input surface and the image output surface are different, only by placing the image input surface facing downward and the image output surface facing upward on the original, the read image information is displayed in real time on the upper image output surface. It becomes possible to display and the usability is greatly improved.

Further, in the image input / output device of the present invention, the document illuminating means for illuminating the document and the illuminating means for illuminating the display are constituted by the same double-sided light source, so that the whole apparatus can be further downsized and the cost can be reduced. it can.

Further, in the photoelectric conversion element in the image input section of the image input / output apparatus of the present invention, the amount of incident light can be detected only at one injection blocking layer, and the process can be optimized easily and the yield can be improved. And the manufacturing cost can be reduced, and a low-cost image input unit having a high SN ratio can be produced. In addition, since the tunnel effect or the Schottky barrier is not used in the first electrode / insulating layer / photoelectric conversion semiconductor layer, the electrode material can be freely selected, and the degree of freedom in controlling the thickness of the insulating layer and other factors are high. . Also, it has good matching with a thin film field effect transistor (TFT) and a capacitive element that are formed at the same time, and since they have the same film structure, they can be simultaneously formed as a common film and a photoelectric conversion element
The film structure which is important for both FT can be formed simultaneously in the same vacuum, and further, there is an effect that the SN of the image input unit can be increased and the cost can be reduced. In addition, the capacitor also includes an insulating layer in the intermediate layer and can be formed with good characteristics, and it is possible to form a highly functional image input unit that can output the integrated value of the optical information obtained by multiple photoelectric conversion elements with a simple configuration. is there.

[Brief description of drawings]

FIG. 1 is a sectional perspective view of a first embodiment according to the present invention.

FIG. 2 is an overall perspective view for explaining an operating state of the first embodiment.

FIG. 3 is an overall perspective view for explaining an operating state of the first embodiment.

FIG. 4 is an overall perspective view for explaining an operating state of the first embodiment.

FIG. 5 is an overall perspective view for explaining an operating state of the first embodiment.

FIG. 6 is an overall perspective view for explaining an operating state of the first embodiment.

FIG. 7 is a flowchart showing an operation in the first embodiment.

FIG. 8 is a flowchart showing an image processing operation in the first embodiment.

FIG. 9 is an array diagram of data in a memory according to the first embodiment.

FIG. 10 is a diagram for explaining the lighting device mounted in the first embodiment.

FIG. 11 is a diagram for explaining the lighting device mounted in the first embodiment.

FIG. 12 is a cross-sectional perspective view according to a second embodiment of the present invention and a cross-sectional perspective view according to a reference mode.

FIG. 13 is a diagram for explaining the lighting device mounted in the second embodiment.

FIG. 14 is a circuit diagram showing an image input unit according to a third embodiment of the present invention.

15A and 15B are a plan view and an AB sectional view showing an image input unit in the third embodiment.

FIG. 16 is a timing chart showing the operation of the image input unit in the third embodiment.

FIG. 17 illustrates an image input unit 200 according to the third embodiment.
It is a mounting view of a detector having 0 × 2000 pixels.

FIG. 18 is a diagram illustrating an image input unit 200 according to the third embodiment.
It is a mounting view of a detector having 0 × 2000 pixels.

FIG. 19 is an overall perspective view of a conventional image input / output device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 image output section 2 backlight 3 image input section 4 original reading light source 5 partition section 6 keyboard section 7 circuit section 8 housing 9, 10 space 12 double-sided light source that is a backlight and original reading light source 20 original 30 image input / output device S11 to S33 Photoelectric conversion element RF refresh control circuit M1 to M3 switch SWs, SWg switch T11 to T33 transfer TFT C11 to C33 capacitor SR1, SR2 shift register IC detection integrated circuit

Claims (5)

[Claims] 1. A two-dimensional image input reading means is arranged on one side, and image processing means for processing an image input by the reading means is provided, and a two-dimensional image is read on the other side which is the back side of the one side. Image output display means is arranged, and the two-dimensional image input reading means is a two-dimensional first illuminating means for illuminating an original and a two-dimensional photoelectric conversion for converting an optical signal reflected from the original into an electric signal. And a light-transmissive display element for displaying a two-dimensional image and illuminating the light-transmissive display element.
Image input / output device, wherein at least one of the two-dimensional first and second illuminating means is one in which one-dimensional EL light sources are two-dimensionally arranged in parallel. . 2. A two-dimensional image input reading means is arranged on one side, and an image processing means for processing an image input by the reading means is provided, and a two-dimensional image is read on the other side which is the back side of the one side. Image output display means is disposed, and the two-dimensional image input read means includes a two-dimensional photoelectric conversion element that converts an optical signal reflected from a document into an electric signal, and the two-dimensional image output display means. Includes a light-transmissive display element for displaying a two-dimensional image, and the original and the light-transmissive display are provided between the two-dimensional image input reading means and the two-dimensional image output display means. An image input / output device, which is provided with an illumination means in which one-dimensional EL light sources for illuminating both of the elements are arranged two-dimensionally in parallel. 3. A storage device for storing an image input by the reading device, or a storage device for storing an image processed by the image processing device. The image input / output device described. 4. The photoelectric conversion element includes a first electrode layer, a first conductivity type carrier, and a first insulating layer that blocks passage of a second conductivity type carrier different from the first conductivity type, and a photoelectric conversion element. A photoelectric conversion element having a conversion semiconductor layer, a second electrode layer, and an injection blocking layer for blocking injection of carriers of the first conductivity type between the second electrode layer and the photoelectric conversion semiconductor layer Patent Claims 1 to
The image input / output device according to any one of item 3. 5. In the refresh operation, an electric field is applied to the photoelectric conversion element in a direction of guiding the first conductivity type carrier from the photoelectric conversion semiconductor layer to the second electrode layer, and in the photoelectric conversion operation, the photoelectric conversion semiconductor is applied. An electric field is applied to the photoelectric conversion element in a direction in which the carriers of the first conductivity type generated by the light incident on the layer are retained in the photoelectric conversion semiconductor layer and the carriers of the second conductivity type are guided to the second electrode layer. A switch element for detecting, as an optical signal, the carrier of the first conductivity type accumulated in the photoelectric conversion semiconductor layer by the photoelectric conversion operation or the carrier of the second conductivity type guided to the second electrode layer. The photoelectric conversion element is connected to each switch element, all photoelectric conversion elements are divided into a plurality of blocks, and the switch element is operated for each block. Image input and output apparatus of the fourth term recited in the claims made by detecting the optical signal by Rukoto.