JP2013065954A - Radiation image capturing device, radiation image capturing system, control program of radiation image capturing device, and control method of radiation image capturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radiation image capturing device capable of enhancing S/N while suppressing the up-sizing of the device and the increase of noise, and to provide a radiation image capturing system, a control program of a radiation image capturing device, and a control method of a radiation image capturing device.SOLUTION: In a usual case for capturing still pictures and the like, control signals are delivered sequentially to the control lines Gn+4 through Gn, in each pixel 20, so that charges are delivered from a TFT 1. In the case for binning moving pictures, control signals are delivered sequentially to the control lines Gn through Gn+4, in each pixel 20, so that charges are delivered from a TFT 2. In both cases of capturing still picture and capturing moving picture, when a control signal is delivered to the control line, the pixel 20 in one row out of the pixels 20 in two rows adjoining that control line is in a state where the charges have been read already, and thereby the charges are delivered to the signal line D only from the pixel 20 in the other row.

Description

  The present invention relates to a radiographic image capturing apparatus, a radiographic image capturing system, a control program for the radiographic image capturing apparatus, and a control method for the radiographic image capturing apparatus, and more particularly to a radiographic image capturing apparatus used for capturing a radiographic image for medical use. The present invention relates to an imaging system, a radiographic imaging apparatus control program, and a radiographic imaging apparatus control method.

  Conventionally, a radiographic imaging apparatus that performs radiography for medical diagnosis is known. The radiation image capturing apparatus captures a radiation image by detecting radiation irradiated from the radiation irradiation apparatus and transmitted through the subject. The radiographic image capturing apparatus captures a radiographic image by collecting and reading out charges generated according to the irradiated radiation. An example of such a radiographic imaging apparatus is an FPD (Flat Panel Detector) panel such as a so-called cassette.

  In radiation imaging, it is desired that still images and moving images (perspective images) can be captured using the same radiation image capturing device (panel). In general, in the case of a still image, since the purpose is diagnosis, photographing at a high resolution (high definition image) is required.

  On the other hand, in the case of a moving image, for example, it is used for the purpose of positioning for taking a still image, such as positioning of a subject, and a high frame rate is required to display a smoother image. . In order to realize such a high frame rate, a so-called binned image in which charges are read out every 2 × 2 pixels or 4 × 4 pixels is often used during moving image shooting. In general binning, two or four control wirings are driven simultaneously, analog binning is performed in which each signal wiring outputs electric charges from a plurality of control wirings at the same time, and then the electric signal of each signal wiring is added. Binning is done digitally.

  On the other hand, it is preferable that the radiation dose at the time of motion imaging is as low as possible, but the S / N may be deteriorated in a low dose range. Therefore, in order to obtain a higher S / N, it is required to perform analog binning as much as possible to increase S (an electric signal corresponding to the amount of charge). For example, Patent Document 1 is cited as a technique for performing analog binning. In Patent Document 1, as a gate line for connecting a gate driver circuit unit and each pixel, a gate line of system A connected for each row or each column pixel and a plurality of rows or columns of pixels are commonly connected. A technique is described in which a gate line for system B, a data line for system A, and a data line for system B are provided to enable high-speed driving and high-definition image acquisition according to the purpose.

JP 2004-46143 A

  The technique described in Patent Literature 1 includes a data line for system A and a data line for system B, and the data lines used are different depending on the purpose. As a result, the number of wirings increases and the number of signal detection circuits for processing data output from the data line increases, resulting in an increase in the size of the apparatus.

  In addition, since three signal wirings and control wirings are arranged in two pixels, at least one wiring must be arranged in a position that overlaps with the pixel in a plane, and noise increases with a significant increase in parasitic capacitance. There is a problem that increases.

  The present invention has been made to solve the above-described problems, and is capable of improving the S / N while suppressing increase in size of the apparatus and increase in noise, and a radiographic image capturing apparatus and radiographic image. An object is to provide an imaging system, a control program for a radiographic imaging apparatus, and a control method for a radiographic imaging apparatus.

  In order to achieve the above object, a radiographic imaging device according to claim 1 is a sensor unit that generates a charge corresponding to irradiated radiation, and a first unit that reads the charge from the sensor unit and outputs the charge. A plurality of pixels arranged in a matrix each having a switching element and a second switching element that reads out the charge from the sensor unit and outputs the charge, and a signal wiring provided for each column of the plurality of pixels And the control terminal of the first switching element of the pixel group composed of a plurality of pixels adjacent to each other in the row direction, and the other pixel group adjacent to the pixel group in the column direction. In the case where the control wiring to which the control terminal of the second switching element is connected and the signal wiring for each pixel outputs electric charge from the first switching element, the second switching element A control signal is sequentially output to the control wiring in the column direction from the pixel group to which the control terminal is connected to the pixel group to which the control terminal of the first switching element is connected, and is the same for each pixel group. And a control means for controlling the control signal to sequentially output the control signal to the control wiring in a direction opposite to the column direction when the charge is output from the second switching element to the signal wiring.

  In the radiographic image capturing apparatus of the present invention, a plurality of pixels are arranged in a matrix. Each pixel includes a sensor unit that generates a charge corresponding to the irradiated radiation, a first switching element that reads the charge from the sensor unit and outputs the charge, and a second switching element that reads the charge from the sensor unit and outputs the charge It has. As described above, the radiographic image capturing apparatus of the present invention is configured to include two switching elements per pixel that read out charges from the same sensor unit and output the read charges. Further, a signal wiring provided for each column of pixels is provided. In addition, a control terminal of a first switching element of a pixel group, which is provided for each row of a plurality of pixels and includes a plurality of pixels adjacent in the row direction, and a second switching of another pixel group adjacent to the pixel group in the column direction. Control wiring to which the control terminal of the element is connected is provided.

  Furthermore, when the control means of the present invention outputs charges from the first switching element to the signal wiring for each pixel, the control terminal of the first switching element is connected from the pixel group to which the control terminal of the second switching element is connected. The control signals are sequentially output to the control wiring in the column direction toward the pixel group to which is connected. In addition, when the charge is output from the second switching element to the same signal wiring for each pixel group, the control unit controls to sequentially output the control signal to the control wiring in the direction opposite to the column direction.

  As described above, when the control unit outputs the electric charge from the first switching element to the signal wiring for each pixel, the first switching element of the pixel group in which the control terminal of the first switching element is connected to the control wiring is turned on. Charge is output to the signal wiring for each pixel. Similarly, when the control means outputs charge from the second switching element to the same signal wiring for each pixel group, the second switching element of the pixel group in which the control terminal of the second switching element is connected to the control wiring. Is turned on, and charges are output to the same signal wiring for each pixel group.

  As described above, in the present invention, the control signal is sequentially output to the control wiring in the column direction from the pixel group to which the control terminal of the second switching element is connected to the pixel group to which the control terminal of the first switching element is connected. Thus, electric charges are output to the signal wiring via the first switching element for each pixel, and the control signal is sequentially output to the control wiring in the direction opposite to the column direction, so that each pixel group passes through the second switching element. Thus, charges are output to the same signal wiring. That is, so-called analog binning can be performed in which charges are collectively read for each pixel group composed of a plurality of pixels adjacent in the row direction.

Therefore, since charges can be read together, signal processing speed can be improved and frame rate can be improved by reading charges together. In addition, since it is not necessary to provide dedicated signal wiring, control wiring, driving means, and the like for collectively reading out charges, by performing analog binning while suppressing increase in size of the device and increase in noise, S / N can be improved,
In the present invention, as in the invention described in claim 2, the pixel group to which the control terminal of the first switching element is connected and the pixel group to which the second switching element is connected Alternatively, they may be arranged in the column direction.

  In the present invention, as in the invention described in claim 3, the pixel group to which the control terminal of the first switching element is connected and the pixel group to which the second switching element is connected Alternatively, they may be arranged with a predetermined number of pixels shifted in the row direction.

  In the present invention, as in the invention according to claim 4, the signal wiring includes a signal wiring in which only the output terminals of the first switching elements of a plurality of pixels adjacent in the column direction are connected, and the column direction. And a signal wiring to which an output terminal of the first switching element of a plurality of pixels adjacent to the pixel and an output terminal of the second switching element of the pixel group are connected.

  In the present invention, as in the invention described in claim 5, for each signal wiring, a pixel to which only the output terminal of the first switching element is connected, and the first switching element and the second switching element are connected. The arranged pixels may be alternately arranged for each predetermined number in the column direction.

  Note that, as in the invention described in claim 6, the present invention includes a reading unit that is provided for each of the signal wirings and reads charges output from the pixels to the signal wirings, and the control unit is predetermined. It is preferable that the output means is controlled to output the control signal to the control wiring group so that the reading means reads the electric charge every several rows. In this way, by reading the charges for each predetermined number of rows, the charges can be further read for each predetermined number of rows of pixels.

  The radiographic imaging apparatus according to claim 7, wherein the first sensor unit, the first switching element having an input terminal connected to the first sensor unit, and the second switching having an input terminal connected to the first sensor unit. A first pixel having an element; a second sensor unit; a third switching element having an input terminal connected to the second sensor unit; and a fourth switching element having an input terminal connected to the second sensor unit. A plurality of pixels in which a pixel group including the second pixel is arranged in a matrix direction, and a first signal wiring provided for each column of the pixel group, to which the output terminal of the first switching element is connected. A second signal line connected to an output terminal of the second switching element, the third switching element, and the fourth switching element, provided for each column of the pixel group, and for each row of the pixel group. Provided A first control wiring to which control terminals of the first switching element and the third switching element are connected, and control terminals of the second switching element and the fourth switching element provided for each row of the pixel group. Are connected to each other, and are arranged at the other end in the column direction from the first control wiring of the pixel group arranged at one end in the column direction and the second control wiring as the first control wiring of the pixel adjacent in the column direction A first control for controlling an output means to output a control signal for outputting charges from the first pixel and the second pixel sequentially to the second control wiring of the pixel group in the column direction; Output means is controlled to sequentially output the control signals in the column direction from the second control wiring of the pixel group arranged at the other end to the first control wiring of the pixel group arranged at the one end. Second control to And a control means for performing.

    In the present invention, as in the invention described in claim 8, the control means may sequentially switch the direction in which the control signal is output based on an instruction from the outside.

  The radiation image capturing system according to claim 9, wherein the radiation image capturing system captures a radiation image by a radiation irradiation device and radiation irradiated from the radiation irradiation device. An image photographing device.

  According to the present invention, as in the invention described in claim 10, the radiation irradiation device is instructed to irradiate the radiation, and the radiation image capturing device is provided with a control device that instructs to capture a radiation image. May be.

  According to a tenth aspect of the present invention, as in the eleventh aspect of the present invention, the control means of the radiographic imaging apparatus is configured to output the control signals sequentially based on the control of the control apparatus. May be switched.

  A control program for a radiographic imaging device according to claim 12, comprising: a sensor unit that generates charges according to irradiated radiation; a first switching element that reads the charges from the sensor unit and outputs the charges; and A plurality of pixels arranged in a matrix each including a second switching element that reads out the charge from the sensor unit and outputs the charge; a signal wiring provided for each column of the plurality of pixels; A control terminal of the first switching element of a pixel group composed of a plurality of pixels adjacent to each other in the row direction, and a second switching element of another pixel group adjacent to the pixel group in the column direction. A computer that controls a radiographic imaging device including a control wiring connected to a control terminal; and a charge from the first switching element to the signal wiring for each pixel. In the case of outputting, the control signals are sequentially controlled in the column direction from the pixel group to which the control terminal of the second switching element is connected to the pixel group to which the control terminal of the first switching element is connected. When the charge is output from the second switching element to the same signal wiring for each pixel group, control is performed so that the control signal is sequentially output to the control wiring in the direction opposite to the column direction. It is for functioning as a control means.

  The method for controlling a radiographic imaging device according to claim 13, wherein a sensor unit that generates a charge corresponding to irradiated radiation, a first switching element that reads the charge from the sensor unit and outputs the charge, and the A plurality of pixels arranged in a matrix each including a second switching element that reads out the charge from the sensor unit and outputs the charge; a signal wiring provided for each column of the plurality of pixels; A control terminal of the first switching element of a pixel group composed of a plurality of pixels adjacent to each other in the row direction, and a second switching element of another pixel group adjacent to the pixel group in the column direction. A radiographic imaging apparatus including a control wiring connected to a control terminal, and for outputting charge from the first switching element to the signal wiring for each pixel, Control is performed so that a control signal is sequentially output to the control wiring in a column direction from the pixel group to which the control terminal of the two switching elements is connected to the pixel group to which the control terminal of the first switching element is connected. And a step of controlling to sequentially output the control signal to the control wiring in the direction opposite to the column direction when the charge is output from the second switching element to the same signal wiring for each pixel group. .

  As described above, it is possible to obtain an effect that the S / N can be improved while suppressing an increase in the size of the apparatus and an increase in noise.

It is a schematic structure figure showing a schematic structure of an example of a radiographic imaging system concerning a 1st embodiment. It is a block diagram which shows an example of the whole structure of the radiographic imaging apparatus which concerns on 1st Embodiment. It is a schematic block diagram which shows an example of schematic structure of the signal detection circuit of the radiographic imaging apparatus which concerns on 1st Embodiment. It is a schematic block diagram which shows an example of schematic structure of the signal detection circuit of the radiographic imaging apparatus which concerns on 1st Embodiment. It is a flowchart of an example of control processing of imaging operation in the radiographic imaging device concerning a 1st embodiment. It is a timing chart for demonstrating the case where analog binning is performed in the column direction in the radiographic imaging device according to the first exemplary embodiment. It is explanatory drawing for demonstrating the case where the analog binning is performed in the row direction in the radiographic imaging device which concerns on 1st Embodiment. It is a block diagram which shows an example of the whole structure of the radiographic imaging apparatus which concerns on 2nd Embodiment. It is a block diagram which shows another example of the whole structure of the radiographic imaging apparatus which concerns on 2nd Embodiment.

  Hereinafter, an example of the present embodiment will be described with reference to the drawings.

[First Embodiment]
First, a schematic configuration of a radiographic imaging system using the radiographic imaging apparatus of the present embodiment will be described. FIG. 1 is a schematic configuration diagram of an example of a radiographic image capturing system according to the present embodiment.

  The radiographic imaging system 200 irradiates a subject 206 with radiation (for example, X-ray (X-ray) or the like), and radiation detection that detects radiation irradiated from the radiation irradiation device 204 and transmitted through the subject 206. A radiographic image capturing apparatus 100 including the element 10 and a control device 202 that instructs to capture radiographic images and acquires a radiographic image from the radiographic image capturing apparatus 100 are provided. At a timing based on the control of the control device 202, the radiation image capturing device 100 is irradiated with the radiation carrying the image information by passing through the subject 206 irradiated from the radiation irradiation device 204 and positioned at the imaging position.

  The radiographic image capturing system 200 has a function of performing still image capturing and moving image capturing, and the control device 202 performs still image capturing and moving image based on a user instruction or control of the radiation irradiation device 204. The radiographic imaging apparatus 100 is instructed to switch to which radiography is performed.

  Next, a schematic configuration of the radiation image capturing apparatus 100 of the present embodiment will be described. In the present embodiment, a case will be described in which the present invention is applied to an indirect conversion radiation detection element 10 that once converts radiation such as X-rays into light and converts the converted light into electric charges. In the present embodiment, the radiographic image capturing apparatus 100 includes an indirect conversion radiation detection element 10. In FIG. 2, a scintillator that converts radiation into light is omitted.

  The radiation detection element 10 receives light to generate charges, accumulates the generated charges, and two TFTs (TFT1, TFT2) that are switching elements for reading the charges accumulated in the sensor section 13 ) Are arranged in a matrix (matrix). In this Embodiment, the sensor part 13 generate | occur | produces an electric charge by irradiating the light converted by the scintillator.

  A plurality of pixels 20 are arranged in a matrix in one direction (the horizontal direction in FIG. 2, hereinafter also referred to as “row direction”) and the direction intersecting the row direction (the vertical direction in FIG. 2, hereinafter also referred to as “column direction”). ing. In FIG. 2, the arrangement of the pixels 20 is shown in a simplified manner. For example, 1024 × 1024 pixels 20 are arranged in the row direction and the column direction.

  Further, the radiation detection element 10 has a plurality of control wirings G (Gn to Gn + 4 in FIG. 2) for controlling ON / OFF of the TFT1 and TFT2, and a charge for reading out the electric charges accumulated in the sensor unit 13. A plurality of signal wirings D (D1 to D4 in FIG. 2) provided for each column of the pixels 20 are provided so as to cross each other. In the present embodiment, for example, when 1024 × 1024 pixels 20 are arranged in the row direction and the column direction, the control wiring G has the number of rows + 1 = 1,025, and the signal wiring D has the number of columns = 1024. Is provided.

  The sensor unit 13 of each pixel 20 is connected to a common wiring (not shown), and is configured such that a bias voltage is applied from a power source (not shown) via the common wiring.

  In the control wiring G, a control signal for switching each TFT 1 and each TFT 2 to which the control terminal is connected flows for each control wiring G. In this way, when the control signal flows through each control wiring G, each TFT 1 and each TFT 2 are switched.

  In the signal wiring D, an electrical signal corresponding to the amount of charge accumulated in each pixel 20 flows through the TFT 1 or TFT 2 according to the switching state of the TFT 1 and the switching state of the TFT 2 of each pixel 20 (details will be described later).

  Each signal wiring D is connected to a signal detection circuit 105 that detects an electrical signal flowing out to each signal wiring D. Here, “detection” of the electric signal represents sampling the electric signal.

  Each control wiring G is connected to a control signal control circuit 104 that outputs a control signal for turning on / off the TFT 1 and TFT 2 to each control wiring G. In FIG. 2, the signal detection circuit 105 and the control signal control circuit 104 are shown in a simplified form. However, for example, a plurality of signal detection circuits 105 and control signal control circuits 104 are provided (for example, 256). The signal wiring D or the control wiring G may be connected every time. For example, when 1024 signal wires D and control wires G are provided, four control signal control circuits 104 are provided, 256 control wires G are connected, and four signal detection circuits 105 are provided 256. You may connect the signal wiring D one by one.

  In detail, in the radiation detection element 10 of the present exemplary embodiment, the control terminal of the TFT 1 is connected to the common control wiring G for each row of the pixels 20 (four rows from A row to D row in FIG. 2). Yes. Further, for each row of the pixels 20, the control terminal of the TFT 2 is connected to a common control wiring G adjacent in the column direction to the pixel to which the control terminal of the TFT 1 of the pixel is connected. Specifically, in the example shown in FIG. 2, the control terminal of the TFT 2 of the pixel 20 (pixel 20 (A1) to pixel 20 (A4)) arranged in the A row is connected to the control wiring Gn. The control wiring Gn + 1 includes a control terminal of the TFT 1 of the pixel 20 (pixel 20 (A1) to pixel 20 (A4)) arranged in the A row and a pixel 20 (pixel 20 (B1) arranged in the B row. To the control terminal of the TFT 2 of the pixel 20 (B4). The control wiring Gn + 2 includes a control terminal of the TFT 1 of the pixel 20 (pixel 20 (B1) to pixel 20 (B4)) arranged in the B row and a pixel 20 (pixel 20 (C1) to pixel arranged in the C row. 20 (C4)) TFT2 control terminal is connected. The control wiring Gn + 3 includes a control terminal of the TFT 1 of the pixel 20 (pixel 20 (C1) to pixel 20 (C4)) arranged in the C row and a pixel 20 (pixel 20 (D1) to pixel arranged in the D row. 20 (D4)) TFT2 control terminal is connected. A control terminal of the TFT 1 of the pixel 20 (pixel 20 (D1) to pixel 20 (D4)) arranged in the D row is connected to the control wiring Gn + 4.

  On the other hand, in the odd-numbered columns for each column of pixels 20 (1 column to 4 columns in FIG. 2), the output of TFT1 out of TFT1 and TFT2 is connected to signal wiring D (signal wirings D1 and D3 in FIG. 2). Only the terminals are connected. In the even columns, the output terminal of the TFT 1 and the output terminal of the TFT 2 of the pixel adjacent to the signal wiring D are connected to the signal wiring D (signal wirings D 2 and D 4 in FIG. 2). Specifically, in the example illustrated in FIG. 2, the output terminal of the TFT 1 of the pixel 20 (pixel 20 (A1) to pixel 20 (D1)) arranged in one column is connected to the signal wiring D1. The signal wiring D2 includes an output terminal of the TFT 2 of the pixels 20 (pixel 20 (A1) to pixel 20 (D1)) arranged in one column and the pixels 20 (pixel 20 (A2)) arranged in two columns. To the output terminals of TFT1 and TFT2 of the pixel 20 (D2)). The output terminal of the TFT 1 of the pixel 20 (pixel 20 (A3) to pixel 20 (D3)) arranged in three columns is connected to the signal wiring D3. The signal wiring D4 includes the output terminal of the TFT1 of the pixels 20 (pixel 20 (A3) to pixel 20 (D3)) arranged in three columns and the pixel 20 (pixel 20 (A4) to pixel arranged in four columns). 20 (D4)) TFT1 and TFT2 output terminals are connected.

  The signal detection circuit 105 includes an amplification circuit that amplifies an input electric signal for each signal wiring D. 3 and 4 are schematic configuration diagrams illustrating an example of the signal detection circuit 105 according to this embodiment. In the signal detection circuit 105, an electric signal input from each signal wiring D is amplified by the amplification circuit 50, and an analog signal is converted into a digital signal by an ADC (analog / digital converter) 54.

  The signal detection circuit 105 according to the present embodiment includes an amplifier circuit 50 and an ADC (analog / digital converter) 54. In the present embodiment, the amplifier circuit 50 is provided for each signal wiring D. That is, the signal detection circuit 105 includes a plurality of amplification circuits 50 that are the same number as the number of signal wirings D of the radiation detection element 10. 3 shows a schematic configuration of the amplifier circuit 50 provided in each of the signal wiring D1 and the signal wiring D3, and FIG. 4 shows the amplification provided in each of the signal wiring D2 and the signal wiring D4. A schematic configuration of the circuit 50 is shown.

  The amplifier circuit 50 includes a charge amplifier circuit, and includes an amplifier 52 such as an operational amplifier, a capacitor C connected in parallel to the amplifier 52, and a charge reset switch SW1 connected in parallel to the amplifier 52. I have.

  In the amplifier circuit 50, the charge (electric signal) is read from the pixel 20 in a state where the switch SW1 for resetting the charge is turned off, the read charge is accumulated in the capacitor C, and an amplifier according to the accumulated charge amount The voltage value output from 52 increases.

  The control unit 106 applies a charge reset signal to the charge reset switch SW1 to control on / off of the charge reset switch SW1. When the charge reset switch SW1 is turned on, the input side and output side of the amplifier 52 are short-circuited, and the capacitor C is discharged.

  The ADC 54 has a function of converting an electrical signal, which is an analog signal input from the amplifier circuit 50, into a digital signal when the S / H (sample hold) switch SW is in an ON state. The ADC 54 sequentially outputs electric signals (image data) converted into digital signals to the control unit 106.

  It should be noted that the electrical signals output from all the amplifier circuits 50 provided in the signal detection circuit 105 are input to the ADC 54 of the present embodiment. That is, the signal detection circuit 105 of the present embodiment includes one ADC 54 regardless of the number of amplifier circuits 50 (signal wirings D).

  In the signal detection circuit 105 and the control signal control circuit 104, radiation indicated by radiation irradiated by performing predetermined processing such as noise removal and gain correction on the image data of the digital signal converted in the signal detection circuit 105 A control unit 106 that generates an image is connected. In addition, the control unit 106 outputs a control signal indicating signal detection timing to the signal detection circuit 105, and outputs a control signal indicating control signal output timing to the control signal control circuit 104.

  The control unit 106 according to the present embodiment is configured by a microcomputer, and includes a nonvolatile storage unit including a CPU (Central Processing Unit), ROM and RAM, flash memory, and the like. The control unit 106 performs control for radiographic imaging by executing a control program (described in detail later) stored in a ROM, which is a recording medium, by the CPU. The control program may be stored in advance in the ROM, or may be supplied from the outside.

  The control unit 106 performs predetermined processing such as noise removal and gain correction on the electrical signal (image data) of the digital signal output from the signal detection circuit 105 to generate a radiation image indicated by the irradiated radiation.

  Next, a radiographic image capturing operation by the radiographic image capturing apparatus 100 (radiation detecting element 10) of the present exemplary embodiment will be described with reference to the drawings. The radiographic imaging apparatus 100 detects the start of radiation irradiation, accumulates charges in each pixel 20 of the radiation detection element 10, and outputs a radiographic image based on image data corresponding to the accumulated charges, thereby generating a radiographic image. Take a picture.

  In the radiographic image capturing apparatus 100 according to the present embodiment, in the case of normal shooting (for example, shooting of a still image for shooting at a high resolution) and for shooting for binning (for example, a moving image for shooting at a high frame rate). ) And two types of shooting, but the operation differs depending on the type, and when shooting at high resolution, shooting still images, shooting at a high frame rate The case where it is performed is assumed to be shooting of a moving image, and will be described according to each shooting. In the present embodiment, reading out charges from a plurality of pixels 20 collectively is referred to as binning.

  Note that in this embodiment, either a still image shooting or a moving image shooting is performed under the control of the control unit 106 based on an instruction from the control device 202. In the control unit 106, when a shooting instruction is received from the control device 202, the control program described below is executed by the CPU. A flowchart of an example of the flow of the control process is shown in FIG.

  When a shooting instruction is received, in step 100, it is determined whether a still image shooting instruction or a moving image shooting instruction is issued. If it is instructed to shoot a still image, the determination is affirmative and the routine proceeds to step 102. Regardless of whether a still image or a moving image is captured, the sensor unit 103 accumulates charges corresponding to the irradiated radiation.

  In the case of shooting a still image, in the present embodiment, the control unit 106 executes the first control for the still image. Therefore, in step 102, after the TFT 1 is turned on and the control signal is sequentially output to the control wiring G so that the charge is output from the pixel 20 (the sensor unit 13) to each signal wiring D via the TFT 1. This process is terminated. In the first control for still images in the present embodiment, control signals are sequentially output from the control wiring Gn + 4 to the control wiring Gn (see FIG. 2, normal scanning direction).

  First, when a control signal is output to the control wiring Gn + 4, the TFT1 of the pixel 20 (pixel 20 (D1) to pixel 20 (D4)) in the D row is turned on, and the pixels 20 (D1) to 20 (D4) are turned on. A charge is output from the sensor unit 13 to each signal wiring D (D1 to D4).

  Next, when a control signal is output to the control wiring Gn + 3, the TFT1 of the pixel 20 in the C row (pixel 20 (C1) to pixel 20 (C4)) is turned on, and the pixel 20 (C1) to pixel 20 (C4). A charge is output from the sensor unit 13 to each signal wiring D (D1 to D4). At this time, the TFTs 2 of the pixels 20 (pixel 20 (D1) to pixel 20 (D4)) in the D row are also turned on, but charges have already been output from the pixels 20 (D1) to 20 (D4). In this state, no charge is output to each signal line D through the TFT 2. Similarly, when a control signal is output to the control wiring Gn + 2, the TFT1 of the pixel 20 (pixel 20 (B1) to pixel 20 (B4)) in the B row is turned on, and the pixel 20 (B1) to pixel 20 (B4) is turned on. A charge is output from the sensor unit 13 to each signal wiring D (D1 to D4). At this time, the TFT2 of the pixel 20 in the C row (pixel 20 (C1) to pixel 20 (C4)) is also turned on, but charges have already been output from the pixel 20 (C1) to pixel 20 (C4). In this state, no charge is output to each signal line D through the TFT 2.

  Thus, in the first control, by sequentially outputting the control signal from the control wiring Gn + 4 to the control wiring Gn, the signal wiring D (D1 to D4) for each pixel 20 and for each column of the pixels 20, Charge is output. That is, charge is output to the signal wiring D for each pixel 20.

  The electric signal corresponding to the electric charge output to the signal wiring D in this way is converted into a digital signal by the signal detection circuit 105, and a radiographic image based on the image data corresponding to the electric signal is converted by the control unit 106. Generate.

  On the other hand, if the control device 202 instructs to shoot a moving image, the result in Step 100 is negative and the process proceeds to Step 104.

  When shooting a moving image, in the present embodiment, the control unit 106 executes the second control for the moving image. Therefore, in step 104, after the TFT 2 is turned on and the control signal is sequentially output to the control wiring G so that the charge is output from the pixel 20 (sensor unit 13) to each signal wiring D via the TFT 2. This process is terminated. In the second control for moving images of the present embodiment, control signals are sequentially output from the control wiring Gn to the control wiring Gn + 4. That is, in the second control, control signals are sequentially output in the reverse direction of the first control and the column (see FIG. 2, binning scan direction).

  First, when a control signal is output to the control wiring Gn, the TFT2 of the pixel 20 (pixel 20 (A1) to pixel 20 (A4)) in the A row is turned on, and the pixels 20 (A1) to 20 (A4) are turned on. A charge is output from the sensor unit 13 to each signal wiring D (D1 to D4). Accordingly, the charges of the pixel 20 (A1) and the pixel 20 (A2) are output to the signal wiring D2. Further, the charges of the pixel 20 (A3) and the pixel 20 (A4) are output to the signal wiring D4.

  Next, when a control signal is output to the control wiring Gn + 1, the TFTs 2 of the pixels 20 in the B row (pixel 20 (B1) to pixel 20 (B4)) are turned on, and the pixel 20 (B1) to pixel 20 (B4) are turned on. A charge is output from the sensor unit 13 to each signal wiring D (D1 to D4). At this time, the TFT1 of the pixel 20 in the A row (pixel 20 (A1) to pixel 20 (A4)) is also turned on, but charges have already been output from the pixel 20 (A1) to pixel 20 (A4). In this state, no charge is output to each signal line D through the TFT 1. Thereby, the charges of the pixel 20 (B1) and the pixel 20 (B2) are output to the signal wiring D2. Further, the charges of the pixel 20 (B3) and the pixel 20 (B4) are output to the signal wiring D4.

  Similarly, when a control signal is output to the control wiring Gn + 2, the charges of the pixel 20 (C1) and the pixel 20 (C2) are output to the signal wiring D2. Further, the charges of the pixel 20 (C3) and the pixel 20 (C4) are output to the signal wiring D4. When a control signal is output to the control wiring Gn + 3, the charges of the pixel 20 (D1) and the pixel 20 (D2) are output to the signal wiring D2. Further, the charges of the pixel 20 (D3) and the pixel 20 (D4) are output to the signal wiring D4. When a control signal is output to the control wiring Gn + 4, no charge is output from any pixel 20.

  In this way, in the second control, the control signal is sequentially output from the control wiring Gn to the control wiring Gn + 4, whereby the sum of the charges of the two pixels 20 (pixels 30) adjacent in the row direction is adjacent to the signal wiring D. (D2, D4). That is, charge is output to the even-numbered signal wiring D for each pixel 30.

  The electric signal corresponding to the electric charge output to the signal wiring D in this way is converted into a digital signal by the signal detection circuit 105, and a radiographic image based on the image data corresponding to the electric signal is converted by the control unit 106. Generate.

  As described above, in the present embodiment, when shooting a moving image, the two pixels 20 are regarded as one pixel 30 and the charges are extracted together. Therefore, the signal processing speed is improved by reading the charges together. In addition, the frame rate can be improved compared to still image shooting.

  As described above, in the radiographic image capturing apparatus 100 (radiation detecting element 10) of the present embodiment, each pixel 20 includes the TFT 1 used for still image capturing and the TFT 2 used for moving image capturing. The odd-numbered signal wirings D (D1, D3) are connected to the output terminals of the TFTs 1 in the odd columns (1 column, 3 columns) of the pixels 20. On the other hand, the even-numbered signal wirings D (D2, D4) include the output terminals of the TFTs 2 in the odd columns (1 column, 3 columns) of the pixels 20 and the TFTs 1 in the even columns (2 columns, 3 columns) of the pixels 20. The output terminal of the TFT 2 is connected. Therefore, the output terminals of the TFTs 2 of the plurality of pixels 20 are connected to the even-numbered signal wirings D (D2, D4). Furthermore, the control terminal of the TFT 2 of the pixel 20 in the A row (pixel 20 (A1) to pixel 20 (A4)) is connected to the control wiring Gn, and the TFT 1 of the pixel 20 in the A row is connected to the control wiring Gn + 1. And the control terminal of the TFT 2 of the B pixel 20 (pixel 20 (B1) to pixel 20 (B4)) are connected. As described above, the connection lines of the TFTs 1 of the pixels 20 in one row of the pixels 20 in two adjacent rows are connected to the control wiring excluding both ends of the column, and the pixels 20 in the other row are connected. The connection terminal of TFT2 is connected.

  In the case of normal shooting such as a still image, control signals are sequentially output from the control wiring Gn + 4 to the control wiring Gn so that charges are output from the TFT 1 in each pixel 20. On the other hand, in the case of binning shooting such as a moving image, a control signal is sequentially output from the control wiring Gn to the control wiring Gn + 4 so that electric charge is output from the TFT 2 in each pixel 20. In both the case of still image shooting and moving image shooting, when a control signal is output to the control wiring, one of the pixels 20 in two rows adjacent to the control wiring has already been charged. Is read out, so that charge is output to the signal wiring D only from the pixels 20 in the other row.

  As described above, the radiographic image capturing apparatus 100 of the present embodiment can perform still image shooting (normal shooting) and moving image shooting (binning shooting) only by changing the order of outputting control signals to the control wiring. it can.

  In the present embodiment, since the two pixels 20 are regarded as one pixel 30 and the charges are extracted together, the signal processing speed is improved by reading the charges together, and the frame rate is higher than that of the still image. Can be improved.

  Accordingly, there is no need to separately provide a signal wiring D for flowing electric charge during moving image capturing, a control wiring G, a driving substrate for driving the TFT 2, and the like, and the radiation image capturing apparatus 100 (radiation detecting element 10) is large. It is possible to perform analog binning with a simple configuration and control while suppressing the reduction of the output.

  Further, since two pixels (pixel 20) adjacent in the row direction are regarded as one pixel (pixel 30) and the charge is read out in units of a plurality of pixels, the number of pixels read out simultaneously in one integration period is doubled. The charge amount (electrical signal corresponding to the charge amount) S can be doubled. Thereby, pixel density (S / N) can be improved. Therefore, S / N can be improved by analog binning.

  In the above-described operation in the case of moving image shooting, the case of reading out charges for each row (for each control wiring G) has been described, but the present invention is not limited to this. The charges may be read out for each of a plurality of rows (for each control wiring G) under the control of the control unit 106. FIG. 6 shows a time chart of an example of the charge detection (reading) operation of the amplifier circuit 50 (amplifier 52) of the signal detection circuit 105 in this case. In the amplifier 52, after resetting, the electric signals flowing through the signal wirings D (in the present embodiment, the signal wirings D2 and D4 in the case of moving image shooting) are converted into digital signals at a predetermined cycle Ts and sampling period Tca to detect radiation. Repeat sampling. By outputting a control signal (hereinafter referred to as an “on signal”) for turning on the TFT 2 to a plurality of (two in FIG. 6) control wirings G in the hold period of each predetermined cycle Ts, a plurality of control wirings G are output. An electric signal in which charges are added from the plurality of pixels 20 corresponding to the control wiring G flows through the signal wiring D. Therefore, in the sampling period Tca after the hold period, the electric signal in which the charges of the plurality of pixels 20 are added in the column direction is sampled by the amplifier 52. That is, the plurality of pixels 20 are analog binned in the column direction.

  Specifically, as shown in FIGS. 6 and 7, first, when an ON signal is sequentially output to the control wiring Gn and the control wiring Gn + 1 in the hold period, in the next sampling period Tca, the pixel 20 (A1) 2 pixels × 2 pixels consisting of the pixel 20 (A2), the pixel 20 (B1), and the pixel 20 (B2) are regarded as one pixel (pixel 40), and the charges of the pixel 40 are added and connected to the signal wiring D2. The signal is sampled by the amplifier 52 of the amplifier circuit 50. In addition, 2 pixels × 2 pixels including the pixel 20 (A3), the pixel 20 (A4), the pixel 20 (B3), and the pixel 20 (B4) are regarded as one pixel (pixel 40), and the charge of the pixel 40 is added. The electrical signal is sampled by the amplifier 52 of the amplifier circuit 50 connected to the signal wiring D4.

  As described above, the ON signal is output to the plurality of control lines in the hold period of the amplifier 52, and the electric signal in which the charges of the pixels 20 in the plurality of rows are added to the sampling period Tca is sampled by the amplifier 52 in the column direction. Analog binning is possible. In the specific example shown in FIG. 6 and FIG. 7, the ON signal is output to the two control wirings G during the hold period so that analog binning is performed in which the two pixels 20 × 2 pixels 20 are regarded as one pixel 40. However, the present invention is not limited to this, and an analog signal binning may be performed in which the ON signal is further output to the plurality of control lines G during the hold period, and 2 pixels 20 × 3 pixels 20 or more are regarded as one pixel.

[Second Embodiment]
Since the radiographic image capturing apparatus of the second embodiment has substantially the same configuration as the radiographic image capturing apparatus 100 of the first exemplary embodiment, the same part is described as such and detailed description thereof is omitted. In addition, since the arrangement | positioning of the pixel of a radiation detection element differs in the radiation imaging device of this Embodiment from the radiation detection element 10 of 1st Embodiment, a different structure and operation | movement are demonstrated in detail.

  FIG. 8 shows a configuration diagram of an example of a schematic configuration of the radiation detection apparatus according to the present exemplary embodiment. In FIG. 8, descriptions of the control signal control circuit 104, the signal detection circuit 105, and the control unit 106 are omitted.

  Similar to the radiation detection element 10 of the first embodiment, the radiation detection element 50 of the present embodiment includes two TFTs that are switching elements for reading out the charge accumulated in the sensor unit 13 and the sensor unit 13. A plurality of pixels 20 including (TFT1, TFT2) are arranged in a matrix (matrix). In the present embodiment, unlike the radiation detection element 10 of the first embodiment, the A row of pixels 20 and the B row of pixels 20 are arranged in a state shifted by one column in the row direction. Yes. Therefore, the signal wiring D1 includes the output terminals of the TFT1 and TFT2 of the pixel 20 (A1), the output terminals of the TFT1 and TFT2 of the pixel 20 (B1), the output terminal of the TFT1 of the pixel 20 (C1), and the pixel 20 (D1). ) TFT1 output terminal is connected. Further, the signal wiring D2 includes the output terminal of the TFT1 of the pixel 20 (A2), the output terminal of the TFT1 of the pixel 20 (B2), the output terminal of the TFT2 of the pixel 20 (C1), the TFT1 and the TFT2 of the pixel 20 (C2). , The output terminal of the TFT2 of the pixel 20 (D1), and the output terminals of the TFT1 and TFT2 of the pixel 20 (D2). The signal wiring D3 includes an output terminal of the TFT1 of the pixel 20 (A2), an output terminal of the TFT1 and TFT2 of the pixel 20 (A3), an output terminal of the TFT2 of the pixel 20 (B2), and a TFT1 of the pixel 20 (B3). The output terminal of the TFT 2, the output terminal of the TFT 1 of the pixel 20 (C3), and the output terminal of the TFT 1 of the pixel 20 (D3) are connected.

  Since two pixels 20 adjacent to each other in the row direction in which the TFT 2 is connected to the same signal wiring D are regarded as the pixels 30 and binning is performed, in this embodiment, as shown in FIG. 8, the pixels 30 are arranged in the column direction. The two are arranged in a staggered pattern.

  Next, a radiographic image capturing operation by the radiation detection element 50 of the present embodiment will be described. Also in the present embodiment, substantially the same as in the first embodiment, the control unit 106 performs the first control in the case of normal shooting (for example, shooting of a still image for shooting at a high resolution) In the case of shooting with binning (for example, shooting of a moving image with high frame rate), the second control and two types of control are performed based on an instruction from the control device 202. In the present embodiment as well, in the case of the first control for capturing a still image, a control signal is sequentially output from the control wiring Gn + 4 to the control wiring Gn (see FIG. 8, normal scanning direction) to capture a moving image. In the case of the second control in which the control is performed, control signals are sequentially output from the control wiring Gn to the control wiring Gn + 4 (see FIG. 8, binning scan direction). Therefore, the flow of control processing (see FIG. 5) performed by the control unit 106 is substantially the same as that in the first embodiment, and will be specifically described here.

  First, the case of the first control for taking a still image will be described. When taking a still image, control signals are sequentially output from the control wiring Gn + 4 to the control wiring Gn. In each pixel 20 for each row, when the TFT 1 is turned on, charges are output from the sensor unit 13 to the signal wiring D to which the output terminal of the TFT 1 is connected via the TFT 1. Note that, as described above in the first embodiment, in each pixel 20, when the TFT 2 is turned on, the charge of the pixel 20 (sensor unit 13) has already been output. Thus, no charge is output to the signal wiring D.

  As described above, in the first control of the present embodiment, as in the first embodiment, the control signal Gn + 4 is sequentially output from the control wiring Gn + 4 to the control wiring Gn. Electric charge is output to the signal wiring D (D1 to D4) for each column. That is, charge is output to the signal wiring D for each pixel 20.

  Next, the case of the second control for capturing a moving image will be described. When shooting a moving image, control signals are sequentially output from the control wiring Gn to the control wiring Gn + 4. In each pixel 20 in each row, when the TFT 2 is turned on, electric charges are output from the sensor unit 13 to the signal wiring D to which the output terminal of the TFT 2 is connected via the TFT 2. As described above in the first embodiment, in each pixel 20, when the TFT1 is turned on, the charge of the pixel 20 (sensor unit 13) has already been output. Thus, no charge is output to the signal wiring D.

  As shown in FIG. 8, when a control signal is output to the control wiring Gn so as to turn on the TFT 2, the TFT 2 of the pixel 20 in the A row is turned on. The charge of the pixel 20 (A1) is output to the signal wiring D1. Further, the charges of the pixel 20 (A2) and the pixel 20 (A3) are output to the signal wiring D3. Further, the charges of the pixel 20 (A4) and the pixel 20 (A5) are output to the signal wiring D5. Similarly, when a control signal is output to the control wiring Gn + 1 to turn on the TFT 2, the TFT 2 of the pixel 20 in the B row is turned on. The charge of the pixel 20 (B1) is output to the signal wiring D1. Further, the charges of the pixel 20 (B2) and the pixel 20 (B3) are output to the signal wiring D3. Further, the charges of the pixel 20 (B4) and the pixel 20 (B5) are output to the signal wiring D5.

  Further, when a control signal is output to the control wiring Gn + 2 to turn on the TFT 2, the TFT 2 of the pixel 20 in the C row is turned on. The charges of the pixel 20 (C1) and the pixel 20 (C2) are output to the signal wiring D2. Further, the charges of the pixel 20 (C3) and the pixel 20 (C4) are output to the signal wiring D4. Further, the charge of the pixel 20 (C5) is output to the signal wiring D6. Similarly, when a control signal is output to the control wiring Gn + 3 to turn on the TFT 2, the TFT 2 of the pixel 20 in the D row is turned on. The charges of the pixel 20 (D1) and the pixel 20 (D2) are output to the signal wiring D2. Further, the charges of the pixel 20 (D3) and the pixel 20 (D4) are output to the signal wiring D4. Further, the charge of the pixel 20 (D5) is output to the signal wiring D6.

  As described above, in the radiation detection element 50 according to the present embodiment, the sum of charges of two pixels (corresponding to the pixel 30) flows for each signal wiring D when capturing a moving image. As described above, in the present embodiment, when shooting a moving image, two pixels adjacent to all the signal wirings D (except for the signal wirings D1 and D6 at both ends of the row in FIG. 8) in the row direction. Since 20 is regarded as one pixel 30, when performing binning of 2 pixels (2 rows) × 2 pixels (2 columns), binning of 4 pixels (4 columns) can be performed in the column direction. As described above, since the number of binning in the column direction can be increased, the frame rate can be further improved.

In the present embodiment, the pixels 30 regarded as one pixel are arranged by shifting one pixel in the row direction every two columns, but the present invention is not limited to this. The gap to be shifted can be arbitrarily set.
In addition, it is preferable to shift one pixel in the row direction every two pixels in the column direction (two columns) or every four pixels (four columns). FIG. 9 shows an example of a schematic configuration of the radiation detection element 50 when one pixel is shifted in the row direction every four pixels.

  Further, in the present embodiment, as in the first embodiment, an ON signal is output to a plurality of control wirings in the hold period of the amplifier 52, and the electric charges obtained by adding the charges of the pixels 20 in a plurality of rows to the sampling period Tca are added. The signal is sampled by the amplifier 52. Specifically, as in the case of the radiation detection element 50 shown in FIG. 8, when one pixel is shifted in the row direction every two pixels (two columns), it is preferable to read out by binning four pixels in the column direction. In FIG. 8, by performing binning reading of the control wirings Gn + 2 and Gn + 3 simultaneously with the binning reading of the control wirings Gn and Gn + 1, the signal wiring D2 has the pixel 20 (C1) + pixel 20 (C2) + pixel 20 (D1). ) + The charge of the pixel 20 (D2) is output, and the charge of the pixel 20 (A2) + the pixel 20 (A3) + the pixel 20 (B2) + the pixel 20 (B3) is output to the signal wiring D3. As described above, since charges for four columns (control wirings Gn to Gn + 3) can be output as charges for one column, the frame rate can be further improved. Also, the resolution (resolution) of 2 pixels (2 rows) × 2 pixels (2 columns) can be achieved.

  On the other hand, like the radiation detection element 50 shown in FIG. 9, when one pixel is shifted in the row direction every four pixels (four columns), it is preferable to bin and read out eight pixels in the column direction. In FIG. 9, by performing binning reading of the control wirings Gn, Gn + 1, Gn + 2, Gn + 3 and the control wirings Gn + 4, Gn + 5, Gn + 6, Gn + 7 at the same time, the signal wiring D2 includes the pixel 20 (E1) + pixel 20 (E2) + The charges of the pixel 20 (F1) + the pixel 20 (F2) + the pixel 20 (G1) + the pixel 20 (G2) + the pixel 20 (H1) + the pixel 20 (H2) are output, and the signal wiring D3 has the pixel 20 ( A2) + pixel 20 (A3) + pixel 20 (B2) + pixel 20 (B3) + pixel 20 (C2) + pixel 20 (C3) + pixel 20 (D2) + pixel 20 (D3) is output. . Further, the signal wiring D4 includes pixel 20 (E3) + pixel 20 (E4) + pixel 20 (F3) + pixel 20 (F4) + pixel 20 (G3) + pixel 20 (G4) + pixel 20 (H3) +. The charge of the pixel 20 (H4) is output, and the pixel 20 (A4) + the pixel 20 (A5) + the pixel 20 (B4) + the pixel 20 (B5) + the pixel 20 (C4) + the pixel 20 ( C5) The charge of + pixel 20 (D4) + pixel 20 (D5) is output. As described above, since the charges for eight columns (control wirings Gn to Gn + 8) can be output as the charges for one column, the frame rate can be further improved. In this case, although the resolution (resolution) is 4 pixels (4 rows) × 2 pixels (2 columns), one more skipped row (in FIG. 9, signal wiring D2 and signal wiring D4, signal wiring D3 and signal By digital binning the wiring D5), it is possible to obtain a resolution (resolution) of 4 pixels (4 rows) × 4 pixels (4 columns).

  As described above, in the radiation detection element 10 according to the present exemplary embodiment, the pixel 30 including the two pixels 20 adjacent in the row direction that can be regarded as one pixel is one pixel (one column) every two pixels (two rows). They are offset. Further, by binning and reading out four pixels in the column direction, charges for four columns can be output as charges for one column, so that the frame rate can be further improved. In addition, when the pixels are arranged so as to be shifted by one pixel (one column) every four pixels (four rows), the eight columns of charges are read out by binning eight pixels in the column direction. Therefore, the frame rate can be further improved. Furthermore, in this case, the resolution can be 4 pixels (2 rows) × 4 pixels (2 columns) by binning and reading one skipped row.

  In the first embodiment and the second embodiment described above, the case where only analog binning is performed has been described in detail. However, the present invention is not limited to this, and the adjacent outputs output from the amplifier 52 of the amplifier circuit 52 are also provided. You may make it perform the digital binning which adds the electric signal of the signal wiring D with the control part 106. FIG. By using digital binning together in this way, the frame rate can be further improved.

  In the first embodiment and the second embodiment described above, the case of performing only the analog binning in which the two pixels 20 adjacent in the column direction are regarded as one pixel has been described in detail. Three or more pixels 20 may be regarded as one pixel.

  In the first embodiment and the second embodiment described above, a still image is captured by the first control in which the charge is output from the sensor unit 13 of the pixel 20 to the signal wiring D via the TFT 1. However, the present invention is not limited to still image and moving image shooting. However, the present invention is not limited to still image and moving image shooting. For example, a moving image may be taken in which image data is obtained by outputting charges for each pixel unit via TFT1, or image data is obtained by outputting charges for a plurality of pixel units via TFT2. Still images may be taken so that

  Note that the configurations, operations, and the like of the radiographic image capturing apparatus 100, the radiation detection elements 10, 50, the pixels 20, the control unit 106, and the like described in the first embodiment and the second embodiment are examples. Needless to say, the present invention can be changed according to the situation without departing from the scope of the present invention.

  Moreover, the radiation of the first embodiment and the second embodiment described above is not particularly limited, and X-rays, γ-rays, and the like can be applied.

1, 2 TFT
DESCRIPTION OF SYMBOLS 10, 50 Radiation detection element 13 Sensor part 20 Pixel 100 Radiation imaging device 106 Control part 200 Radiation imaging system G Control wiring D Signal wiring

Claims (13)

A sensor unit that generates a charge corresponding to the irradiated radiation, a first switching element that reads the charge from the sensor unit and outputs the charge, and a second that reads the charge from the sensor unit and outputs the charge A plurality of pixels arranged in a matrix each having a switching element;
A signal wiring provided for each column of the plurality of pixels;
Provided for each row of the plurality of pixels, the control terminal of the first switching element of the pixel group consisting of a plurality of pixels adjacent in the row direction and the second of the other pixel group adjacent to the pixel group in the column direction. Control wiring to which the control terminal of the switching element is connected;
When outputting charge from the first switching element to the signal wiring for each pixel, the control terminal of the first switching element is connected from the pixel group to which the control terminal of the second switching element is connected. When the control signal is sequentially output to the control wiring in the column direction toward the pixel group, and the charge is output from the second switching element to the same signal wiring for each pixel group, the control signal is reverse to the column direction. Control means for sequentially controlling the control signal to be output to the control wiring in a direction;
A radiographic imaging apparatus comprising:   The radiographic image according to claim 1, wherein the pixel group to which the control terminal of the first switching element is connected and the pixel group to which the second switching element is connected are arranged in a column direction. Shooting device.   The pixel group to which the control terminal of the first switching element is connected and the pixel group to which the second switching element is connected are arranged with a predetermined number of pixels shifted in the row direction. The radiographic imaging apparatus according to claim 1.   The signal wiring includes a signal wiring to which only output terminals of the first switching elements of a plurality of pixels adjacent in the column direction are connected, an output terminal of the first switching elements of the plurality of pixels adjacent in the column direction, and The radiographic imaging apparatus according to claim 1, further comprising: a signal wiring to which an output terminal of the second switching element of the pixel group is connected.   For each of the signal wirings, a pixel to which only the output terminal of the first switching element is connected and a pixel to which the first switching element and the second switching element are connected are determined in a predetermined number in the column direction. The radiographic imaging apparatus of Claim 1 or Claim 3 arrange | positioned alternately.   Provided for each of the signal wirings, and provided with a reading unit that reads the electric charges output from the pixels to the signal wirings, and the control unit reads the electric charges every predetermined number of rows. The radiographic image capturing apparatus according to claim 1, wherein control is performed so that the control signal is output to the control wiring. A first pixel having a first sensor unit, a first switching element having an input terminal connected to the first sensor unit, a second switching element having an input terminal connected to the first sensor unit, and a second sensor And a second pixel having a third switching element having an input terminal connected to the second sensor part and a fourth switching element having an input terminal connected to the second sensor part. A plurality of pixels arranged in a direction;
A first signal wiring provided for each column of the pixel group, to which an output terminal of the first switching element is connected;
A second signal line provided for each column of the pixel group, to which the output terminals of the second switching element, the third switching element, and the fourth switching element are connected;
A first control wiring provided for each row of the pixel group, to which control terminals of the first switching element and the third switching element are connected;
A second control wiring provided for each row of the pixel group, to which the control terminals of the second switching element and the fourth switching element are connected, and serving as the first control wiring of a pixel adjacent in the column direction;
From the first control wiring of the pixel group arranged at one end in the column direction to the second control wiring of the pixel group arranged at the other end in the column direction, the first pixel and the first A first control for controlling the output means to output a control signal for outputting charges from two pixels; and the pixel disposed at the one end from the second control wiring of the pixel group disposed at the other end. Control means for performing second control for controlling output means so as to sequentially output the control signals to the first control wirings of a group in a column direction;
A radiographic imaging apparatus comprising:   The radiographic image capturing apparatus according to claim 6, wherein the control unit sequentially switches a direction in which the control signal is output based on an instruction from the outside. A radiation irradiation device;
The radiographic image capturing apparatus according to any one of claims 1 to 8, wherein a radiographic image is captured by radiation irradiated from the radiation irradiating apparatus;
Radiographic imaging system equipped with.   The radiation image capturing system according to claim 9, wherein the radiation image capturing system includes a control device that instructs the radiation image capturing apparatus to instruct radiation irradiation and also instructs the radiation image capturing apparatus to capture a radiation image.   The radiographic imaging system according to claim 10, wherein the control unit of the radiographic imaging apparatus sequentially switches the direction in which the control signal is output based on the control of the control apparatus. A sensor unit that generates a charge corresponding to the irradiated radiation, a first switching element that reads the charge from the sensor unit and outputs the charge, and a second that reads the charge from the sensor unit and outputs the charge A plurality of pixels arranged in a matrix each including a switching element, a signal wiring provided for each column of the plurality of pixels, and a plurality of pixels adjacent to each other in the row direction, provided for each row of the plurality of pixels. A radiation image comprising: a control terminal of the first switching element of a pixel group composed of pixels and a control wiring connected to the control terminal of the second switching element of another pixel group adjacent to the pixel group in the column direction. A computer that controls the imaging device,
When outputting charge from the first switching element to the signal wiring for each pixel, the control terminal of the first switching element is connected from the pixel group to which the control terminal of the second switching element is connected. When the control signal is sequentially output to the control wiring in the column direction toward the pixel group, and the charge is output from the second switching element to the same signal wiring for each pixel group, the control signal is reverse to the column direction. A control program for a radiographic imaging apparatus for functioning as control means for controlling the control signal to be output to the control wiring sequentially in a direction. A sensor unit that generates a charge corresponding to the irradiated radiation, a first switching element that reads the charge from the sensor unit and outputs the charge, and a second that reads the charge from the sensor unit and outputs the charge A plurality of pixels arranged in a matrix each including a switching element, a signal wiring provided for each column of the plurality of pixels, and a plurality of pixels adjacent to each other in the row direction, provided for each row of the plurality of pixels. A radiation image comprising: a control terminal of the first switching element of a pixel group composed of pixels and a control wiring connected to the control terminal of the second switching element of another pixel group adjacent to the pixel group in the column direction. Depending on the shooting device,
When outputting charge from the first switching element to the signal wiring for each pixel, the control terminal of the first switching element is connected from the pixel group to which the control terminal of the second switching element is connected. Controlling to sequentially output control signals to the control wiring in a column direction toward the pixel group;
When outputting charges from the second switching element to the same signal wiring for each pixel group, controlling to sequentially output the control signal to the control wiring in a direction opposite to the column direction;
A method for controlling a radiographic imaging apparatus comprising:

Images