KR102631193B1 - Refresh device and method for radiation detector - Google Patents

Abstract

The present invention relates to an apparatus and method for refreshing a radiation detector. The present invention provides a method for refreshing a radiation detector, comprising: (a) creating a plurality of virtual gate drivers by virtualizing gate drivers connected to a plurality of gate lines of a detection panel; and (b) simultaneously performing a refresh operation on the gate line by each of the plurality of virtual gate drivers.

Description

Refreshing device and method for radiation detector {REFRESH DEVICE AND METHOD FOR RADIATION DETECTOR}

The present invention relates to an apparatus and method for refreshing a radiation detector.

Radiation is widely used for purposes such as medical imaging or non-destructive testing, and the creation of a radiation image is achieved by a radiation detector recognizing radiation that has penetrated a subject such as the human body.

In the past, radiation images were taken in an analog manner using film, but now digital radiation detectors that acquire image information by detecting radiation and converting it into electrical signals have become common.

A digital radiation detector converts light resulting from radiation irradiation into charges, includes a plurality of pixels that accumulate the converted charges, and generates an image signal by reading out the charges accumulated in each pixel. For smooth operation of the radiation detector, a refresh (also called flush) operation is required to remove unnecessary charges remaining in each pixel after reading the image signal.

1 is a diagram showing an example of a conventional refresh process for a radiation detector.

Each pixel of the radiation detector includes a switching element (for example, a thin film transistor (TFT)), and the switching element is connected to a gate driver through a gate line. During the refresh process, the gate driver sequentially activates each gate line to refresh the pixels connected to the corresponding gate line.

In the example of Figure 1, _one radiation detector with _a resolution of ₁₀₂₄ 1~G ₂ 512) is provided as an example. In the first refresh process (Refresh 1), each gate driver (Gate1, Gate2) sequentially activates the gate lines (G ₁ 1 to G ₁ 512 and G ₂ 1 to G ₂ 512) to refresh them. In Figure 1, the one-time refresh interval of each gate line is indicated by T _line . This refresh process can be repeated a sufficient number of times to remove charge from the pixel. However, there is a disadvantage in that it takes a lot of time to sequentially refresh a plurality of gate lines as shown in FIG. 1. For fast refresh, it is necessary to have more gate drivers, but this has the problem of increasing costs.

Referring to FIG. 6, Patent Publication No. 10-2013-0014061 proposes performing refresh by adjusting timing so that adjacent gate lines are not opened at the same time. However, in the case of the first and last edge gate lines, since the gate line is turned on alone, there is a disadvantage in that refresh occurs unevenly and artifacts occur.

Public Patent Publication No. 10-2013-0014061

There is a technology for performing fast refresh without increasing the number of gate drivers for a digital radiation detector, but in the prior art, the refresh result is incomplete, causing artifacts in the image or failing to sufficiently shorten the execution time of the refresh process. There is a problem.

In order to solve this problem, the purpose of the present invention is to provide a refresh device and method for a radiation detector that shortens the time required for the refresh process and exhibits a uniform refresh effect for all gate lines.

The present invention provides a method for refreshing a radiation detector, comprising: (a) creating a plurality of virtual gate drivers by virtualizing gate drivers connected to a plurality of gate lines of a detection panel; and (b) simultaneously performing a refresh operation on the gate line by each of the plurality of virtual gate drivers.

In one embodiment, step (a) may group the plurality of gate lines into a plurality of gate line groups and assign each grouped gate line group to the plurality of virtual gate drivers.

In addition, N first to Nth virtual gate drivers are created for one gate driver (N is a natural number of 2 or more), and in step (b), the first to Nth virtual gate drivers are each The refresh operation can be performed by simultaneously activating one of the connected gate lines.

In one embodiment, N first to Nth virtual gate drivers (N is a natural number of 2 or more) are generated for one gate driver, and in step (a), the remaining virtual gate drivers excluding the Nth virtual gate driver are generated. activating the gate line of the last row of the virtual gate drivers; and activating the gate line of the first row of the first to Nth virtual gate drivers by inputting a control signal to the gate driver.

In one embodiment, N first to N virtual gate drivers (N is a natural number of 2 or more) are generated for one gate driver, and step (a) generates a high STV signal and a high STV signal to the gate driver. inputting a CPV signal to activate a gate line in a first row of the first virtual gate driver; inputting a CPV signal to the gate driver and shifting activation to the last row of the first virtual gate driver; and further inputting a high STV signal and a CPV signal to the gate driver to activate the gate line of the first row of the first virtual gate driver and the gate line of the first row of the second virtual gate driver. there is.

Additionally, step (a) may include activating all gate lines in the first row of each of the first to Nth virtual gate drivers.

In addition, in step (b), after the gate line of the first row of each of the first to Nth virtual gate drivers is activated, an OE signal is input to the gate driver to activate each of the first to Nth virtual gate drivers. may include opening the gate line of the first row.

In addition, the step (b) includes inputting a CPV signal to the gate driver to shift activation of the gate line in the first row of each of the first to Nth virtual gate drivers to the gate line in the next row; and re-inputting the OE signal to the gate driver to open the gate line of the next row of each of the first to Nth virtual gate drivers.

In one embodiment, the method of refreshing the radiation detector may further include (c) resetting the gate driver.

Additionally, step (c) may be performed by deactivating all of the plurality of gate lines.

In addition, the present invention provides a refresh device for a radiation detector including a detection panel including a plurality of pixel arrays, comprising: a gate driver for controlling a gate of a switching element included in the pixel of the detection panel; and a control unit that controls the gate driver, wherein the control unit controls the gate driver to perform the refresh method according to the present invention.

According to the present invention, there is an effect of enabling fast refresh of the radiation detector without increasing the number of gate drivers.

When applying the prior art, rapid refresh may be possible if multiple gate drivers with a small number of channels are provided. However, the recent trend is to use multi-channel gate drivers considering the price of the gate driver, power consumption, number of control I/O pins, etc., and the present invention has the advantage of enabling fast refresh while using multi-channel gate drivers. There is.

In addition, according to the present invention, it is possible to provide a uniform and sufficient refresh time to each gate line while enabling rapid refresh of the entire area of the radiation detector, thereby minimizing image artifacts.

1 is a diagram showing an example of a conventional refresh process for a radiation detector.
Figure 2 is a diagram showing the configuration of a radiation detector according to an embodiment of the present invention.
Figure 3 is a diagram for explaining a basic refresh process in the refresh method of a radiation detector according to an embodiment of the present invention.
Figure 4 is a diagram showing a control signal for simultaneously activating a plurality of gate lines in one gate driver in the refresh method of a radiation detector according to an embodiment of the present invention.
Figure 5 is a diagram showing a process in which a plurality of gate lines are activated in one gate driver in the refresh method of a radiation detector according to an embodiment of the invention.
FIG. 6 is a diagram illustrating performing a refresh operation after virtualization preparation of the gate driver is completed in the radiation detector refresh method according to an embodiment of the present invention.
Figure 7 is a diagram showing a gate line where a refresh operation in a virtual gate driver is performed in the refresh method of a radiation detector according to an embodiment of the present invention.
Figure 8 is a diagram illustrating a control signal of a control unit for a radiation detector reset process in the radiation detector refresh method according to an embodiment of the present invention.
Figure 9 is a diagram showing an example of applying the refresh method of a radiation detector according to an embodiment of the present invention.
Figure 10 is a flowchart showing a method for refreshing a radiation detector according to an embodiment of the present invention.
FIG. 11 is a flowchart showing the gate driver virtualization step in more detail in the radiation detector refresh method according to an embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and may be understood to include all transformations, equivalents, and substitutes included in the technical idea and scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms such as first, second, etc. may be used to describe various components, but the components are not limited by the terms. Terms are used only to distinguish one component from another.

The terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. The terms used in the present invention are general terms that are currently widely used as much as possible while considering the functions in the present invention, but this may vary depending on the intention of a person skilled in the art, precedents, or the emergence of new technology. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the relevant invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than simply the name of the term.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, identical or corresponding components will be assigned the same drawing numbers and redundant description thereof will be omitted. do.

Figure 2 is a diagram showing the configuration of a radiation detector according to an embodiment of the present invention.

The radiation detector 1 according to an embodiment of the present invention includes a detection panel 10 including a plurality of pixel arrays (not shown), and acquires an image signal by reading the charges accumulated in the pixels of the detection panel 10. It includes a signal detection unit 20, a gate driver 30 that controls the gate of a switching element included in a pixel of the detection panel 20, and a control unit 40 that controls the gate driver 30.

The detection panel 10 may include a plurality of pixels in an array form, including a conversion element and a switching element (eg, a thin film transistor (TFT)) that converts irradiated radiation into charge directly or indirectly.

The signal detection unit 20 receives the charge accumulated in the pixel and detects an electrical signal for each pixel. The signal detection unit 20 may be connected to the detection panel 10 through a data line 22.

Gate driver 30 is connected to the gate of the series TFT through gate line 32. A plurality of gate lines 32 are provided. For example, in the case of a detection panel 10 with a resolution of 1024×1024, 1024 rows of gate lines 32 are provided.

The gate driver 30 controls switching of the TFT by transmitting the output signal OUT under the control of the control unit 40 to the gate of the TFT through the gate line 32. The gate driver 30 includes a plurality of channels, and each channel may be connected to each gate line 32. The gate driver 30 can control the switching of TFTs of a series of pixels connected to the gate line 32 by applying an output signal (OUT) to the gate line 32.

A plurality of gate drivers 30 may be provided corresponding to the number of gate lines 32 of the detection panel 10 . For example, when the number of gate lines 32 of the detection panel 10 is 1024 and the number of channels of each gate driver 30 is 512, two gate drivers 30 are provided, and each gate driver ( If the number of channels 30) is 256, four gate drivers 30 can be provided. In FIG. 2 , for convenience of explanation, it is illustrated that a first gate driver 30a and a second gate driver 30b are provided.

The control unit 40 controls the driving of the gate driver 30. In one embodiment, the control unit 40 turns off the TFTs of all pixels while radiation is irradiated to the detection panel 10 and charges are accumulated in each pixel, and the signal detection unit 20 turns off the charges accumulated in each pixel. In the process of reading charge, the TFT is sequentially switched for each gate line 32, and in the refresh process, the gate driver 30 can be controlled to control the refreshed gate line 32 to the ON state.

The control unit 40 transmits a control signal for controlling the gate driver 30. In one embodiment, the control signal may include a Start Vertical Signal (STV signal), a Clock Pulse Vertical Signal (CPV signal), and an Output Enable Signal (OE) signal.

The STV signal is a signal that indicates the start of turn-on of the gate lines 32 controlled by the corresponding gate driver 30. The CPV signal is a signal that shifts the activated gate line 32 to the next gate line one by one. The OE signal is an output enable signal and is a signal that opens the activated gate line 32.

As the main object of the present invention is the refresh process of the detection panel 10, the following description will focus on the configuration or function of the control unit 40 related to the refresh process.

Figure 3 is a diagram for explaining a basic refresh process in the refresh method of a radiation detector according to an embodiment of the present invention.

In FIG. 3, (a) represents the control signal transmitted from the control unit 40 to the gate driver 30, and (b) represents the output signal (OUT) to the gate lines 32 G1, G2, and G3 of the gate driver 30. ). In FIG. 3, for convenience of explanation, three gate lines 32 are shown connected to the gate driver 30. However, in the practice of the present invention, the number of gate lines 32 connected to one gate driver 30 is There could be more.

At T1, the control unit 40 transmits a 'high' STV signal to the gate driver 30 to start the refresh operation. Next, the control unit 40 transfers the CPV signal to the gate driver 30 to activate the first gate line G1.

At T2, the control unit 40 transfers the OE signal to the gate driver 30 to open the activated first gate line G1.

At T3, the control unit 40 transfers the CPV signal to the gate driver 30 so that activation of the first gate line is shifted to the second gate line G2, thereby activating the second gate line G2. Next, the control unit 40 transfers the OE signal to the gate driver 30 to open the activated second gate line G2.

At T4, the control unit 40 transfers the CPV signal to the gate driver 30 to shift the activation of the gate line to the third gate line G3, so that the third gate line G3 is activated. Next, the control unit 40 transfers the OE signal to the gate driver 30 to open the activated third gate line G3.

Through this process, one refresh operation for gate lines G1 to G3 is completed. Steps T1 to T4 may be repeated until the charge on the detection panel 10 is sufficiently removed.

In a typical refresh operation of a radiation detector, only one gate line is activated among a plurality of gate lines connected to one gate driver at T2, T3, and T4 in FIG. 3. This sequential activation of gate lines takes a lot of time to complete the refresh process. In order to solve this problem, the present invention is characterized by activating a plurality of gate lines connected to one gate driver to perform a refresh operation. In another sense, the present invention can be understood as controlling one physical gate driver 30 by dividing it into a plurality of virtual gate drivers.

Figure 4 is a diagram showing a control signal for simultaneously activating a plurality of gate lines in one gate driver in the refresh method of a radiation detector according to an embodiment of the present invention, and Figure 5 is a diagram showing a radiation signal according to an embodiment of the invention. This diagram shows the process by which multiple gate lines are activated in one gate driver in the detector refresh method.

The process of FIG. 4 may be performed before performing the process shown in FIG. 3. That is, the process of FIG. 4 can be understood as a preparatory step for performing the process of FIG. 3, and the process of FIG. 4 can be defined as creating virtual gate drivers 60a1 to 60a3 by virtualizing the gate driver 30. You can. The virtual gate drivers 60a1 to 60a3 are virtual divisions of the physical gate driver 30, and each virtual gate driver 60a1 to 60a3 can perform a refresh operation simultaneously.

Figure 4(a) shows a control signal input from the control unit 40 to the gate driver 30, and Figure 4(b) shows the gate driver 30 divided into a plurality of virtual gate drivers 60a1 to 60a3. indicates what has been done. In Figure 4, it is illustrated that nine gate lines G1 to G9 are connected to the gate driver 30. Additionally, since the OE signal is absent, the gate lines G1 to G9 are only activated and there is no output signal (OUT) from the gate driver 30. The example of FIG. 4 shows that three virtual gate drivers 60a1, 60a2, and 60a3 are created by dividing the nine gate lines G1 to G9 into three groups.

In the T _{0_1} section, the S _{0_1} signal that makes the STV signal high is input to the gate driver 30, and the CPV signal C _{0_1} is input. Accordingly, in the gate driver 30, the first gate line G1 is activated, as shown in (a) of FIG. 5.

Subsequent input of the CPV signal shifts the activation of the gate line to the next gate line. When CPV signals C _{0_2} and C _{0_3} are continuously input, the activation of the gate line sequentially moves to the gate line G2 and G3, as shown in Figures 5 (b) and (c). Accordingly, the last gate line of the first virtual gate driver 60a1 is activated. If 64 gate lines are connected to the first virtual gate driver 60a1, the last gate line will be activated only when 63 additional CPV signals are input after the CPV signal C _{0_1} is input.

In the T _{0_2} section, the S _{0_2} signal that makes the STV signal high is input to the gate driver 30 and the CPV signal C _{0_4} is input. Accordingly, as shown in (d) of FIG. 5, the first gate line G1 of the gate driver 30 is activated, and the activation of the already activated gate line G3 is shifted to the next gate line G4.

When the CPV signal C _{0_5} is input, the activation of the gate lines G1 and G4 is shifted to the next gate line, and the gate lines G2 and G5 are activated, as shown in (d) and (e) of FIG. 5. Subsequently, when the CPV signal C _{0_6} is input, the activation of the gate lines G2 and G5 is shifted to the next gate line, and the gate lines G3 and G6 are activated, as shown in FIG. 5(f).

When the above process is performed, the last gate line G3 of the first virtual gate driver 60a1 and the last gate line G6 of the second virtual gate driver 60a2 are activated, and then the signal that makes the STV signal high and the CPV signal become high. When input, the gate line G1 of the first virtual gate driver 60a1, the gate line G4 of the second virtual gate driver 60a2, and the gate line G7 of the third virtual gate driver 60a3 are activated. Accordingly, a refresh operation for a group of three gate lines can be performed simultaneously by one gate driver 30, and virtually an operation as if a plurality of gate drivers are provided is possible.

Meanwhile, in the case of creating two virtual gate drivers, the first virtual gate driver 60a1 and the second virtual gate driver 60a2, rather than three virtual gate drivers 60a1 to 60a3, in (a) of FIG. 4 Preparation for virtualization of the gate driver 30 is completed only with the input of the STV signal and the CPV signal in the T _{0_1} section. If there is one additional virtual gate driver in addition to the three virtual gate drivers (60a1 to 60a3), additional STV signals and CPV signals are input in the same manner as the T _{0_2} section following the T _{0_2} section in (a) of Figure 4. Only then will preparations for virtualization of the gate driver 30 be completed.

To summarize the preparation process for virtualization of the gate driver 30, when it is desired to divide one gate driver 30 into N virtual gate drivers, the STV signal and the CPV signal are applied to create the first to N-1 virtual gate drivers. The gate driver 30 is ready for virtualization by activating the last row of gate lines belonging to each gate driver.

FIG. 6 is a diagram illustrating a refresh operation performed after virtualization preparation of the gate driver is completed in the radiation detector refresh method according to an embodiment of the present invention. Figure 7 is a diagram showing a gate line where a refresh operation in a virtual gate driver is performed in the refresh method of a radiation detector according to an embodiment of the present invention.

In the state of FIG. 5 (f), when the S ₁ signal that makes the STV signal high in the T1 section of FIG. 6 (a) is input to the gate driver 30 and the CPV signal C ₁ is input, the As shown in (a), the first gate line G1 of the first virtual gate driver 60a1, the first gate line G4 of the second virtual gate driver 60a2, and the first gate line G7 of the third virtual gate driver 60a3 are activated. do.

When the OE signal O ₁ is input to the gate driver 30 in the T2 section of FIG. 6 (a), the gate lines G1, G4, and G7 are opened.

In the T3 section of FIG. 6(a), when the CPV signal C ₂ is input to the gate driver 30, as shown in FIG. 7(b), each of the gate lines G1, G4, and G7 is activated, followed by gate lines G2, Shifted to G5 and G8. Then, when the OE signal O ₂ is input to the gate driver 30, the gate lines G2, G5, and G8 are opened.

In the T4 section of FIG. 6(a), when the CPV signal C ₃ is input to the gate driver 30, as shown in FIG. 7(c), each of the gate lines G2, G5, and G8 is activated to activate the next gate line G3, Shifted to G6 and G9. Then, when the OE signal O ₃ is input to the gate driver 30, the gate lines G3, G6, and G9 are opened.

Through this process, one refresh operation for gate lines G1 to G9 is completed. Steps T1 to T4 may be repeated until the charge on the detection panel 10 is sufficiently removed.

6 and 7, in the present invention, the gate driver 30 is divided into a plurality of virtual gate drivers 60a1, 60a2, and 60a3, and each virtual gate driver 60a1, 60a2, and 60a3 provides a gate line. Since the refresh operation for the radiation detector is performed simultaneously, the refresh operation for the radiation detector can be performed quickly.

FIG. 8 is a diagram illustrating a control signal of a control unit for a reset process of a radiation detector in a method of refreshing a radiation detector according to an embodiment of the present invention.

When the charge accumulated in the detection panel 10 is sufficiently erased by repeating the refresh operation on the detection panel 10, the CPV signal is repeatedly input to the gate driver 30 to activate the remaining activated gate in the gate driver 30. Shift all lines to deactivate the gate line. Accordingly, the gate driver 30 may be reset to its initial state and converted to a ready state for radiation detection.

Figure 9 is a diagram showing an example of applying the refresh method of a radiation detector according to an embodiment of the present invention.

In the example of FIG. 9, the resolution of the detection panel 10 is 1024 × 1024, and it is provided with two first gate drivers 30a and two second gate drivers 30b with 512 channels, and each of the first and second gate drivers 30a and 30b has 512 channels. The gate drivers (30a, 30b) are divided into 8 virtual gate drivers (60a1~60a8, 60b1~60b8), and each virtual gate driver (60a1~60a8, 60b1~60b8) has 64 gate lines (G ₁₁ 1~ G ₁₁ 64,…, G ₁₈ 1~G ₁₈ 64, G ₂₁ 1~G ₂₁ 64,…, G ₂₈ 1~G ₂₈ 64).

After virtualization of the first and second gate drivers 30a, 30b is completed through the gate driver virtualization process, detection is performed through at least one refresh operation (Refresh 1, Refresh 2, ..., Refresh n). After erasing the accumulated charge of the panel 10, the refresh process for the detection panel 10 can be completed by performing a gate driver reset process as shown in FIG. 8.

In Figure 9, since there are a total of 16 virtual gate drivers (60a1 to 60a8, 60b1 to 60b8), the time for performing refresh can be shortened by performing a refresh operation by activating and opening 16 gate lines at the same time.

FIG. 10 is a flowchart showing a refresh method for a radiation detector according to an embodiment of the present invention, and FIG. 11 is a flowchart showing the gate driver virtualization step in the refresh method for a radiation detector according to an embodiment of the present invention in more detail. .

The refresh method of the radiation detector according to an embodiment of the present invention is summarized as follows.

10 and 11, the control unit 40 virtualizes the gate driver 30 (S10). Specifically, the number (N) of gate driver virtualization may be set (S100). The number of gate driver virtualizations (N) can be set in advance. As the last gate line of the first virtual gate driver is activated (S110) and the last gate line of the second to N-1th virtual gate drivers are activated (S120), gate driver virtualization can be performed. Additionally, after step S120, the control signal from the control unit 40 is transmitted to the gate driver 30 so that the first gate lines of each of the first to Nth virtual gate drivers can be activated simultaneously.

A refresh operation is performed simultaneously for each virtualized virtual gate driver (S20).

When the charge accumulated in the detection panel 10 of the radiation detector 1 is sufficiently removed by repeating step S20, the gate driver 30 is reset to prepare the radiation detector 1 to sense radiation. (S30).

In the above description, the specific description of virtualizing the gate driver 30 by inputting the STV signal and the CPV signal to the gate driver 30 is only an example for implementing the present invention, and according to the gate driver 30, the gate driver ( The specific procedure for activating multiple gate lines simultaneously to create multiple virtual gate drivers by virtualizing 30) may vary.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications, changes, and substitutions can be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the attached drawings are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments and the attached drawings. . The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

1: Radiation detector
10: detection panel
20: signal detection unit
30: gate driver
40: control unit
60a, 60b, 60c: virtual gate drivers

Claims (11)

In a method of refreshing a radiation detector,
(a) creating a plurality of virtual gate drivers by virtualizing gate drivers connected to a plurality of gate lines of the detection panel; and
(b) each of the plurality of virtual gate drivers simultaneously performing a refresh operation on the gate line;
Including,
In step (a), grouping the plurality of gate lines into a plurality of gate line groups and assigning each grouped gate line group to the plurality of virtual gate drivers,
N first to Nth virtual gate drivers are generated for one gate driver (N is a natural number of 2 or more),
In step (a),
activating the gate lines of the last row of the virtual gate drivers excluding the Nth virtual gate driver; and
activating the gate line of the first row of the first to Nth virtual gate drivers by inputting a control signal to the gate driver
A refresh method for a radiation detector comprising: delete According to claim 1,
In step (b), the first to Nth virtual gate drivers simultaneously activate one of the gate lines connected to each other to perform the refresh operation. delete According to claim 1,
In step (a),
activating a gate line in the first row of the first virtual gate driver by inputting a high STV signal and a CPV signal to the gate driver;
inputting a CPV signal to the gate driver and shifting activation to the last row of the first virtual gate driver; and
A high STV signal and a CPV signal are further input to the gate driver to activate the first row gate line of the first virtual gate driver and the first row gate line of the second virtual gate driver.
A refresh method for a radiation detector comprising: According to claim 5,
The step (a) includes activating all gate lines in the first row of each of the first to Nth virtual gate drivers. According to claim 6,
In the step (b), after the gate line of the first row of each of the first to Nth virtual gate drivers is activated, an OE signal is input to the gate driver to activate the first to Nth virtual gate drivers of each of the first to Nth virtual gate drivers. A method for refreshing a radiation detector, comprising the step of opening a first row of gate lines. According to claim 7,
In step (b),
Shifting activation of the first row gate line of each of the first to Nth virtual gate drivers to the next row gate line by inputting a CPV signal to the gate driver; and
Refreshing a radiation detector comprising the step of re-inputting an OE signal to the gate driver to open the gate line of the next row of each of the first to Nth virtual gate drivers. The method according to any one of claims 1, 3, and 5 to 8,
(c) A method for refreshing a radiation detector, further comprising the step of resetting the gate driver. According to clause 9,
The step (c) is performed by deactivating all of the plurality of gate lines. A refresh device for a radiation detector including a detection panel including a plurality of pixel arrays,
a gate driver that controls a gate of a switching element included in the pixel of the detection panel; and
It includes a control unit that controls the gate driver,
The refresh device for a radiation detector, wherein the control unit controls the gate driver to perform the refresh method according to any one of claims 1, 3, and 5 to 8.

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