CN113805221B - Radiation detection device - Google Patents

Abstract

The present disclosure provides a radiation detection apparatus including a detection panel. The detection panel comprises a plurality of first pixels arranged in a first row along the extending direction of the data line, a plurality of second pixels arranged in a second row along the extending direction of the data line and a plurality of second pixels arranged in a third row along the extending direction of the data line. Each of the plurality of first pixels includes a first switch, and each of the plurality of second pixels and the other plurality of second pixels includes a second switch. Each of the plurality of second pixels and the another plurality of second pixels includes a photodiode. The first pixels do not include photodiodes, i.e., each of the second pixels further includes photodiodes electrically connected to the second switches as compared to the first pixels.

Description

Radiation detection device

Technical Field

The present disclosure relates to a detection device, and in particular to a radiation detection apparatus.

Background Art

The process of removing the basic background value (offset) of a general radiation detection device is usually affected by dynamic factors, including the variation of the analog-to-digital converter of the readout circuit chip, or the power supply noise from the gate end, etc. Even the mode switching of the readout circuit chip will affect the operating temperature, and thus affect the detection value. In other words, due to the influence of the above-mentioned dynamic factors, when a general radiation detection device obtains basic background value information, the basic background value information obtained is actually different from the detected exposure information. In this regard, the general correction method is only to avoid the influence of exposure by shielding the photodiode. However, since the circuit loop connecting the photodiode will theoretically be affected by dark current or other defects, the general radiation detection device cannot provide appropriate basic background value information. In view of this, several embodiments of the solution will be proposed below.

Summary of the invention

The present disclosure is directed to a radiation detection device, which can effectively obtain background noise for correcting radiation detection results.

According to an embodiment of the present disclosure, the radiation detection device of the present disclosure includes a detection panel. The detection panel includes a plurality of first pixels arranged in a first row along the extension direction of the data line, a plurality of second pixels arranged in a second row along the extension direction of the data line, and another plurality of second pixels arranged in a third row along the extension direction of the data line. Each of the plurality of first pixels includes a first switch. Each of the plurality of second pixels and the other plurality of second pixels includes a second switch. Each of the plurality of second pixels and the other plurality of second pixels includes a photodiode, and the plurality of first pixels do not include a photodiode, that is, each of the plurality of second pixels and the other plurality of second pixels also includes a photodiode electrically connected to the second switch compared to the plurality of first pixels.

According to an embodiment of the present disclosure, the radiation detection device of the present disclosure includes a detection panel. The detection panel includes a bias line, a first pixel and a second pixel. The first pixel and the second pixel respectively include a switch and a photodiode. The plurality of first pixels are electrically insulated from the bias line. The plurality of second pixels are electrically connected to the bias line.

Based on the above, the radiation detection device of the present disclosure can provide appropriate background noise through pixels without photodiodes or pixels electrically insulated from bias lines, so as to effectively obtain background noise for correcting radiation detection results.

In order to make the above features and advantages of the present disclosure more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a circuit diagram of a radiation detection device in some embodiments according to the present disclosure;

FIG2 is a circuit diagram of a radiation detection device in some embodiments according to the present disclosure;

FIG3 is a schematic diagram of a pixel circuit according to an embodiment of the present disclosure;

FIG. 4 is a circuit diagram of a radiation detection device in some embodiments according to the present disclosure.

Description of Reference Numerals

100, 200, 400: radiation detection device;

100P, 200P, 400P: detection panel;

101, 102, 201, 202, 401, 402: readout circuit;

110R, 110_1 to 110_N, 120R, 120_1 to 120_N, 130R, 130_1 to 130_N, 140R, 140_1 to 140_N, 210R, 210_1 to 210_N, 220R, 220_1 to 220_N, 230R, 230_1 to 230_N, 240R, 240_1 to 240_N, 310R, 410_1 to 410_M, 420_1 to 420_M, 430_1 to 430_N, 440_1 to 440_N: pixels;

111R, 111_1 to 111_N, 121R, 121_1 to 121_N, 131R, 131_1 to 131_N, 141R, 141_1 to 141_N, 211R, 211_1 to 211_N, 221R, 221_1 to 221_N, 231R, 231_1 to 231_N, 241R, 241_1 to 241_N, 311R, 411_1 to 411_M, 421_1 to 421_M, 431_1 to 431_M, 441_1 to 441_M: switch;

112_1～112_N, 122_1～122_N, 132_1～132_N, 142_1～142_N, 212_1～212_N, 222_1～222_N, 232_1～232_N, 242_1～242_N, 312, 412_1～412_M, 422_1～422_M, 432_1～432_M, 422_1～422_M: photodiode;

R1, R2: background lines;

D1_1～D1_N, D2_1～D2_N, D1_1～D1_M, D2_1～D2_M: data lines;

L1, L2, L1’, L2’: minimum spacing;

G1, G2, G3: gate lines;

BL: bias line;

BLS: Biased Branch Line;

P1: data line extension direction;

P2: Gate line extension direction.

DETAILED DESCRIPTION

Certain words are used throughout the present disclosure and in the claims to refer to specific components. It should be understood by those skilled in the art that display device manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following description and claims, the words "including" and "comprising" are open-ended words and should therefore be interpreted as "including but not limited to...".

In some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact, or two structures not being in direct contact, with another structure disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed. In addition, the term "electrically connected" includes any direct and indirect electrical connection means.

The ordinal numbers used in the specification and the scope of the invention patent application, such as "first", "second", etc., are used to modify components. They themselves do not mean or represent that or those components have any previous ordinal numbers, nor do they represent the order of a component and another component, or the order of the manufacturing method. The use of these ordinals is only used to make a component with a certain name clearly distinguishable from another component with the same name. The same words may not be used in the claims and the specification. Accordingly, the first component in the specification may be the second component in the claims. It should be noted that the embodiments listed below can replace, reorganize, and mix the technical features in several different embodiments to complete other embodiments without departing from the spirit of the present disclosure.

FIG. 1 is a circuit diagram of a radiation detection device according to a first embodiment of the present disclosure. Referring to FIG. 1 , the radiation detection device 100 includes a detection panel 100P. The detection panel 100P includes a pixel array, and FIG. 1 presents a portion of the pixel array of the detection panel 100P. In the present embodiment, the detection panel 100P includes a readout circuit 101, 102, and includes gate lines G1, G2, G3, bias lines BL, background lines R1, R2, data lines D1_1 to D1_N, D2_1 to D2_N, and pixels 110R, 110_1 to 110_N, 120R, 120_1 to 120_N, where N is a positive integer. The pixels 110R, 110_1 to 110_N, 120R, 120_1 to 120_N are arranged along the gate line extension direction P2. In other embodiments, the gate lines may be straight lines or most of them may be straight lines or non-straight lines (e.g., wavy, etc.), and the present disclosure is not limited thereto. In this regard, whether the gate line is a straight line, a mostly straight line, or a non-straight line, it extends along the gate line extension direction P2. The pixels 130R, 130_1 to 130_N, 140R, 140_1 to 140_N are arranged along the gate line extension direction P2. The pixels 110R, 110_1 to 110_N, 120R, 120_1 to 120_N are arranged between the gate lines G1 and G2. The pixels 130R, 130_1 to 130_N, 140R, 140_1 to 140_N are arranged between the gate lines G2 and G3. In this embodiment, the readout circuit 101 is electrically connected to the background line R1 and the data lines D1_1 to D1_N, and reads the detection data of the pixels 110R, 110_1 to 110_N, 130R, 130_1 to 130_N via the background line R1 and the data lines D1_1 to D1_N. The readout circuit 102 is electrically connected to the background line R2 and the data lines D2_1 to D2_N, and reads the detection data of the pixels 120R, 120_1 to 120_N, 140R, 140_1 to 140_N via the background line R2 and the data lines D2_1 to D2_N.

In this embodiment, the pixels 110R, 110_1 to 110_N, 120R, 120_1 to 120_N include switches 111R, 111_1 to 111_N, 121R, 121_1 to 121_N, respectively, and the switches 111R, 111_1 to 111_N, 121R, 121_1 to 121_N are electrically connected to the gate line G1. The pixels 130R, 130_1 to 130_N, 140R, 140_1 to 140_N include switches 131R, 131_1 to 131_N, 141R, 141_1 to 141_N, respectively, and the switches 131R, 131_1 to 131_N, 141R, 141_1 to 141_N are electrically connected to the gate line G2. The gate line G3 is used to electrically connect a plurality of pixels (not shown) in the next row arranged along the gate line extension direction P2. The switches 111R, 111_1 to 111_N, 121R, 121_1 to 121_N, 131R, 131_1 to 131_N, 141R, 141_1 to 141_N may respectively include a switching circuit composed of one or more N-type or P-type transistors, and the present disclosure is not limited thereto. The pixels 110_1 to 110_N, 120_1 to 120_N, 130_1 to 130_N, 140_1 to 140_N further include photodiodes 112_1 to 112_N, 122_1 to 122_N, 132_1 to 132_N, 142_1 to 142_N, respectively.

It is worth noting that the above-mentioned photodiode can be a light detection device that converts light into current, voltage or capacitance signal according to the usage mode, and after the photodiode detects light, the current, voltage or capacitance signal can be provided to the readout circuit 101, 102 through the data line for related signal judgment. In this embodiment, the photodiodes 112_1~112_N, 122_1~122_N, 132_1~132_N, 142_1~142_N are electrically connected to the switches 111_1~111_N, 121_1~121_N, 131_1~131_N, 141_1~141_N, and are electrically connected to the bias line BL, wherein the bias line BL is used to provide an operating voltage to the photodiodes 112_1~112_N, 122_1~122_N, 132_1~132_N, 142_1~142_N.

From another perspective, a plurality of pixels such as pixels 110R and 130R are arranged in a first row along the data line extension direction P1, a plurality of pixels such as pixels 110_1 and 130_1 are arranged in a second row along the data line extension direction P1, and a plurality of pixels such as pixels 110_2 and 130_2 are arranged in a third row along the data line extension direction P1. In other embodiments, the data line may be a straight line or a mostly straight line or a non-straight line (e.g., a wavy shape, etc.), and the present disclosure is not limited thereto. In this regard, whether the data line is a straight line or a mostly straight line or a non-straight line, it extends along a data line extension direction P1. In this embodiment, each of the plurality of pixels in the first row includes switches 111R, 131R such as pixels 110R, 130R, and each of the plurality of pixels in the first row includes pixels 110R, 130R without photodiodes, while each of pixels 110_1, 130_1, 110_2, 130_2 includes photodiodes 112_1, 132_1, 112_2, 132_2, that is, each of pixels 110_1, 130_1, 110_2, 130_2 includes photodiodes 112_1, 132_1, 112_2, 132_2 electrically connected to switches 111_1, 131_1, 111_2, 131_2, respectively, compared to pixels 110R, 130R. Switches 111R, 131R are electrically connected to background line R1.

In this embodiment, each of the plurality of pixels in the second row includes switches 111_1, 131_1 and photodiodes 112_1, 132_1, such as pixels 110_1, 130_1. The switch 111_1 is electrically connected to the gate line G1, the data line D1_1 and the photodiode 112_1, and the photodiode 112_1 is also electrically connected to the bias line BL. The switch 131_1 is electrically connected to the gate line G2, the data line D1_1 and the photodiode 132_1, and the photodiode 132_1 is also electrically connected to the bias line BL.

In this embodiment, each of the plurality of pixels in the third row includes switches 111_2, 131_2 and photodiodes 112_2, 132_2, such as pixels 110_2, 130_2. The switch 111_2 is electrically connected to the gate line G1, the data line D1_2 and the photodiode 112_2, and the photodiode 112_2 is also electrically connected to the bias line BL. The switch 131_2 is electrically connected to the gate line G2, the data line D1_2 and the photodiode 132_2, and the photodiode 132_2 is also electrically connected to the bias line BL. The data line D1_2 is adjacent to the data line D1_1 and away from the background line R1. It is worth noting that the so-called data line D1_2 being adjacent to the data line D1_1 means that there is no other data line or background line between the data line D1_2 and the data line D1_2.

In this embodiment, the radiation detection device 100 can obtain multiple background values through each of the multiple pixels in the first row, such as pixels 110R, 120R, 130R, and 140R, during the radiation detection process, so as to be used to correct the radiation detection results of the photodiodes of the pixels in other corresponding rows. In addition, in this embodiment, the minimum spacing L1 between the background line R1 and the data line D1_1 is the same as the minimum spacing L2 between the data line D1_1 and the data line D1_2. Similarly, the minimum spacing between the background line R2 and the data line D2_1 is also the same as the minimum spacing between the data line D2_1 and the data line D2_2. In other words, the radiation detection device 100 may, for example, remove the photodiodes of pixels 110R, 120R, 130R, and 140R from an existing pixel array layout so that the switches 111R, 121R, 131R, and 141R of the pixels 110R, 120R, 130R, and 140R only provide noise signals on the circuit loop to the readout circuits 101 and 102 as background values.

It is worth noting that the background line R1, the data line D1_1 and the data line D1_2 are electrically connected to the same readout circuit 101, so that the pixels 110R, 110_1 to 110_N, 130R, 130_1 to 130_N have the same or similar circuit loop noise. The background line R2, the data line D2_1 and the data line D2_2 are electrically connected to the same readout circuit 102, so that the pixels 120R, 120_1 to 120_N, 140R, 140_1 to 140_N have the same or similar circuit loop noise. Therefore, the background values read out from the switches 111R and 131R are suitable for correcting the detection results of the pixels 110_1 to 110_N and 130_1 to 130_N, and the background values read out from the switches 121R and 141R are suitable for correcting the detection results of the pixels 120_1 to 120_N and 140_1 to 140_N.

In addition, in one embodiment, the pixels 110_1 to 110_N electrically connected to the readout circuit 101 may also include one or more pixel designs such as pixel 110R for obtaining background noise, and the pixels 130_1 to 130_N electrically connected to the readout circuit 101 may also include one or more pixel designs such as pixel 130R for obtaining background values. In other words, any one or more data lines may be selected from the data lines D1_1 to D1_N for use as background lines. However, the positions of one or more pixels designed as pixel 110R in the pixels 110_1 to 110_N, 131_1 to 131_N may be equidistant or unequally spaced or arbitrarily selected. Taking three background lines as an example, the first background line, the second background line, and the third background line are electrically connected to the readout circuit 101. The minimum spacing between the first background line and the second background line may be the same as the minimum spacing between the second background line and the third background line. Alternatively, the minimum spacing between the first background line and the second background line may be different from the minimum spacing between the second background line and the third background line. Similarly, the pixels 120_1 ˜ 120_N, 140_1 ˜ 140_N electrically connected to the readout circuit 102 may have the same, similar or different circuit layout as the pixels 110_1 ˜ 110_N, 130_1 ˜ 130_N electrically connected to the readout circuit 101 according to different usage requirements or designs.

In addition, the radiation detection device 100 may include a display device, an antenna device, a sensing device or a splicing device, but is not limited thereto. The radiation detection device 100 may be a bendable or flexible electronic device. The radiation detection device 100 may, for example, include a liquid crystal light emitting diode. The light emitting diode may, for example, include an organic light emitting diode (OLED), a sub-millimeter light emitting diode (mini LED), a micro LED or a quantum dot light emitting diode (QDLED), fluorescence, phosphorescence or other suitable materials and their materials may be arranged and combined in any manner, but are not limited thereto. The antenna device may, for example, be a liquid crystal antenna, but is not limited thereto. The splicing device may, for example, be a display splicing device or an antenna splicing device, but is not limited thereto. It should be noted that the radiation detection device 100 may be any arrangement and combination of the aforementioned, but is not limited thereto.

FIG2 is a circuit diagram of a radiation detection device in some embodiments of the present disclosure. Referring to FIG2 , the radiation detection device 200 includes a detection panel 200P. The detection panel 200P includes a pixel array, and FIG2 presents a portion of the pixel array of the detection panel 200P. In the present embodiment, the detection panel 200P includes a readout circuit 201, 202, and includes gate lines G1, G2, G3, bias lines BL, background lines R1, R2, data lines D1_1~D1_N, D2_1~D2_N and pixels 210R, 210_1~210_N, 220R, 220_1~220_N, 230R, 230_1~230_N, 240R, 240_1~240_N, where N is a positive integer. The pixels 210R, 210_1 to 210_N, 220R, 220_1 to 220_N are arranged along the gate line extension direction P2 and are disposed between the gate lines G1 and G2. The pixels 230R, 230_1 to 230_N, 240R, 240_1 to 240_N are arranged along the gate line extension direction P2 and are disposed between the gate lines G2 and G3. In this embodiment, the readout circuit 201 is electrically connected to the background line R1 and the data lines D1_1 to D1_N, and the detection data of the pixels 210R, 210_1 to 210_N, 230R, 230_1 to 230_N are read out through the background line R1 and the data lines D1_1 to D1_N. The readout circuit 202 is electrically connected to the background line R2 and the data lines D2_1 ˜ D2_N, and reads out the detection data of the pixels 220R, 220_1 ˜ 220_N, 240R, and 240_1 ˜ 240_N via the background line R2 and the data lines D2_1 ˜ D2_N.

In the present embodiment, the pixels 210R, 210_1 to 210_N, 220R, 220_1 to 220_N, 230R, 230_1 to 230_N, 240R, 240_1 to 240_N respectively include switches 211R, 211_1 to 211_N, 221R, 221_1 to 221_N, 231R, 231_1 to 231_N, 241R, 241_1 to 241_N. The switches 211R, 211_1 to 211_N, 221R, 221_1 to 221_N are electrically connected to the gate line G1. The switches 231R, 231_1 to 231_N, 241R, 241_1 to 241_N are electrically connected to the gate line G2. The gate line G3 is used to electrically connect a plurality of pixels (not shown) in the next row arranged along the gate line extension direction P2. The switches 211R, 211_1 to 211_N, 221R, 221_1 to 221_N, 231R, 231_1 to 231_N, 241R, 241_1 to 241_N may respectively include a switching circuit composed of one or more N-type or P-type transistors, but the present disclosure is not limited thereto. The pixels 210_1 to 210_N, 220_1 to 220_N, 230_1 to 230_N, and 240_1 to 240_N further include photodiodes 212_1 to 212_N, 222_1 to 222_N, 232_1 to 232_N, and 242_1 to 242_N, respectively. , 242_1 - 242_N are electrically connected to the switches 211_1 - 211_N, 221_1 - 221_N, 231_1 - 231_N, 241_1 - 241_N, and are electrically connected to a bias line BL, wherein the bias line BL is used to provide an operating voltage to the photodiodes 212_1 - 212_N, 222_1 - 222_N, 232_1 - 232_N, 242_1 - 242_N.

From another perspective, a plurality of pixels such as pixels 210R and 230R are arranged in a first row along the data line extension direction P1, a plurality of pixels such as pixels 210_1 and 230_1 are arranged in a second row along the data line extension direction P1, and a plurality of pixels such as pixels 210_2 and 230_2 are arranged in a third row along the data line extension direction P1. In the present embodiment, each of the plurality of pixels in the first row includes switches 211R and 231R such as pixels 210R and 230R, and each of the plurality of pixels in the first row includes switches 211R and 231R such as pixels 210R and 230R but does not include a photodiode. The switch 211R is electrically connected to the gate line G1 and the background line R1. The switch 231R is electrically connected to the gate line G2 and the background line R1. In the present embodiment, each of the plurality of pixels in the second row includes switches 211_1 and 231_1 and photodiodes 212_1 and 232_1 such as pixels 210_1 and 230_1. The switch 211_1 is electrically connected to the gate line G1, the data line D1_1 and the photodiode 212_1, and the photodiode 212_1 is also electrically connected to the bias line BL. The switch 231_1 is electrically connected to the gate line G2, the data line D1_1 and the photodiode 232_1, and the photodiode 232_1 is also electrically connected to the bias line BL. In the present embodiment, each of the plurality of pixels in the third row includes switches 211_2, 231_2 and photodiodes 212_2, 221_2 such as pixels 210_2, 230_2. The switch 211_2 is electrically connected to the gate line G1, the data line D1_2 and the photodiode 212_2, and the photodiode 212_2 is also electrically connected to the bias line BL. The switch 231_2 is electrically connected to the gate line G2 , the data line D1_2 and the photodiode 232_2 , and the photodiode 232_2 is also electrically connected to the bias line BL, wherein the data line D1_2 is adjacent to the data line D1_1 and away from the background line R1 .

In the present embodiment, the radiation detection device 200 can obtain multiple background values through each of the multiple pixels in the first row, such as pixels 210R, 220R, 230R, and 240R, during the radiation detection process to respectively correct the radiation detection results of the photodiodes of other corresponding pixels. In addition, in the present embodiment, the minimum spacing L1' between the background line R1 and the data line D1_1 is different from the minimum spacing L2' between the data line D1_1 and the data line D1_2. Similarly, the minimum spacing between the background line R2 and the data line D2_1 is also different from the minimum spacing between the data line D2_1 and the data line D2_2. In the present embodiment, the ratio of the minimum spacing L2' between the data line D1_1 and the data line D1_2 to the minimum spacing between the background line R1 and the data line D1_1 is, for example, greater than 6, but the present disclosure is not limited thereto. In other words, in one embodiment, the radiation detection device 200 may, for example, modify the existing pixel array layout to remove the photodiodes of the pixels 210R, 220R, 230R, 240R, so that the switches 211R, 212R, 231R, 242R of the pixels 210R, 220R, 230R, 240R only provide the noise signal on the circuit loop to the readout circuits 201, 202 as background values. In addition, the radiation detection device 200 may turn the configuration of the switches 211R, 221R, 231R, 241R (for example, 90 degrees) to reduce the layout width of the switches 211R, 221R, 231R, 241R in the gate line extension direction P2, thereby effectively reducing the pixel area not used for detecting radiation in the detection panel 200P.

It is worth noting that the background line R1 and the data lines D1_1 to D1_N are electrically connected to the same readout circuit 201, so that the pixels 210R, 210_1 to 210_N, 230R, 230_1 to 230_N have the same or similar circuit loop noise. The background line R2 and the data lines D2_1 to D2_N are electrically connected to the same readout circuit 202, so that the pixels 220R, 220_1 to 220_N, 240R, 240_1 to 240_N have the same or similar circuit loop noise. Therefore, the background value read out from the switches 211R and 231R is suitable for correcting the detection results of the pixels 210_1 to 210_N, 230_1 to 230_N, and the background value read out from the switches 221R and 241R is suitable for correcting the detection results of the pixels 220_1 to 220_N, 240_1 to 240_N.

In addition, in one embodiment, the pixels 210_1 to 210_N electrically connected to the readout circuit 201 may also include one or more pixel designs such as pixel 210R for obtaining background noise, and the pixels 230_1 to 230_N electrically connected to the readout circuit 201 may also include one or more pixel designs such as pixel 230R for obtaining background noise. In other words, any one or more data lines can be selected from the data lines D1_1 to D1_N for use as background lines. However, the positions of one or more pixels designed as pixels 210R, 230R in the pixels 210_1 to 210_N, 230_1 to 230_N may be equidistant or unequally spaced or arbitrarily selected. Taking three background lines as an example, the first background line, the second background line, and the third background line are electrically connected to the readout circuit 201. The minimum spacing between the first background line and the second background line may be the same as the minimum spacing between the second background line and the third background line. Alternatively, the minimum spacing between the first background line and the second background line may be different from the minimum spacing between the second background line and the third background line. Similarly, the pixels 220_1-220_N, 240_1-240_N electrically connected to the readout circuit 202 may have the same, similar or different circuit layout as the pixels 210_1-210_N, 230_1-230_N electrically connected to the readout circuit 201 according to different usage requirements or designs.

FIG. 3 is a schematic diagram of a pixel circuit according to an embodiment of the present disclosure. Referring to FIG. 3 , FIG. 3 is used to illustrate a method of electrically isolating a pixel 310R from a bias line BL. In the present embodiment, the pixel 310R is disposed between the data lines D1_1 and D1_2, and between the gate lines G1 and G2. The pixel 310R includes a switch 311R and a photodiode 312. The control end of the switch 311R is electrically connected to the gate line G1. The first end of the switch 311R is electrically connected to the data line D1_1, and the second end of the switch 311R is electrically connected to one end of the photodiode 312. In the present embodiment, the pixel 310R is electrically insulated from the bias line BL. As shown in FIG. 3 , the method of electrically isolating the pixel 310R from the bias line BL is to disable the photodiode 312 because it cannot receive the bias by forming a circuit break between the photodiode 312 in the active region and the bias branch line BLS. Therefore, after the switch 311R of the pixel 310R is turned on, background noise of the circuit loop can be provided. However, in one embodiment, the pixel 310R and the bias line BL may be electrically insulated by directly cutting off the bias line BL in the peripheral region, so that the photodiode 312 cannot receive the bias and is disabled.

FIG4 is a circuit diagram of a radiation detection device in some embodiments of the present disclosure. Referring to FIG4 , the radiation detection device 400 includes a detection panel 400P. The detection panel 400P includes a pixel array, and FIG4 is a portion of the pixel array of the detection panel 400P. In the present embodiment, the detection panel 400P includes readout circuits 401 and 402, and includes gate lines G1, gate lines G2, gate lines G3, bias lines BL, data lines D1_1 to D1_M, D2_1 to D2_M, and pixels 410_1 to 410_M, 420_1 to 420_M, 430_1 to 430_M, 440_1 to 440_M, where M is a positive integer. The pixels 410_1 to 410_M, 420_1 to 420_M are arranged along the gate line extension direction P2 and are arranged between the gate lines G1 and G2. The pixels 430_1-430_M and 440_1-440_M are arranged along the gate line extension direction P2 and are disposed between the gate lines G2 and G3. In this embodiment, the readout circuit 401 is electrically connected to the data lines D1_1-D1_M and is used to read out the detection data of the pixels 410_1-410_M and 430_1-430_M via the data lines D1_1-D1_M. The readout circuit 402 is electrically connected to the data lines D2_1-D2_M and is used to read out the detection data of the pixels 420_1-420_M and 440_1-440_M via the data lines D2_1-D2_M.

In this embodiment, pixels 410_1-410_M, 420_1-420_M, 430_1-430_M, 440_1-440_M respectively include switches 411_1-411_M, 421_1-421_M, 431_1-431_M, 441_1-441_M. Switches 411_1-411_M, 421_1-421_M are electrically connected to gate line G1. Switches 431_1-431_M, 441_1-441_M are electrically connected to gate line G2. Gate line G3 is used to electrically connect a plurality of pixels in the next row arranged along gate line extension direction P2. The switches 411_1-411_M, 421_1-421_M, 431_1-431_M, 441_1-441_M may include switching circuits composed of one or more N-type or P-type transistors, respectively, but the present disclosure is not limited thereto. The pixels 410_1-410_M, 420_1-420_M, 430_1-430_M, 440_1-440_M further include photodiodes 412_1-412_M, 422_1-422_M, 432_1-432_M, 442_1-442_M, respectively. The photodiodes 412_1 - 412_M, 422_1 - 422_M, 432_1 - 432_M, and 442_1 - 442_M are electrically connected to the switches 411_1 - 411_M, 421_1 - 421_M, 431_1 - 431_M, and 441_1 - 441_M, respectively.

In this embodiment, the photodiodes 412_M, 422_M, 432_M, and 442_M are not electrically connected to the bias line BL, while the other photodiodes are electrically connected to the bias line BL, but the disclosure is not limited thereto. In one embodiment, at least one of the photodiodes 412_1 to 412_M, at least one of the photodiodes 422_1 to 422_M, at least one of the photodiodes 432_1 to 432_M, and at least one of the photodiodes 442_1 to 442_M may not be electrically connected to the bias line BL, while the other photodiodes are electrically connected to the bias line BL. The bias line BL is used to provide an operating voltage to the other photodiodes. In other words, at least one of the pixels 410_1-410_M, at least one of the pixels 420_1-420_M, at least one of the pixels 430_1-430_M, and at least one of the pixels 440_1-440_M of the present embodiment can be electrically insulated from the bias line to provide background noise. However, the method of electrically insulating at least one of the pixels 410_1-410_M, at least one of the pixels 420_1-420_M, at least one of the pixels 430_1-430_M, and at least one of the pixels 440_1-440_M from the bias line can refer to the method of disconnecting the bias branch line BLS in the active region or the method of cutting off the bias line BL in the peripheral region provided in the embodiment of FIG. 3, and thus will not be described in detail here.

From another perspective, a plurality of pixels such as pixels 410_M and 430_M are arranged in a first row along the data line extension direction P1, and a plurality of pixels such as pixels 410_1 and 430_1 are arranged in a second row along the data line extension direction P1. In the present embodiment, each of the plurality of pixels in the first row includes a switch 411_M and a photodiode 412_M such as pixel 410_M. The switch 411_M is electrically connected to the gate line G1, the data line D1_M and the photodiode 412_M. The pixel 410_M is electrically insulated from the bias line BL. In the present embodiment, each of the plurality of pixels in the second row includes a switch 411_1 and a photodiode 412_1 such as pixel 410_1. The switch 411_1 is electrically connected to the gate line G1, the data line D1_1 and the photodiode 412_1, and the photodiode 412_1 is also electrically connected to the bias line BL. The pixel 410_1 is electrically connected to the bias line BL.

In this embodiment, the radiation detection device 400 can obtain multiple background values through each of the multiple pixels in the first row, such as pixels 410_M and 430_M, during the radiation detection process, so as to be used to correct the radiation detection results of the photodiodes of other corresponding pixels. In this regard, the data line D1_M can be used as a background line. In other words, the radiation detection device 400 can, for example, not change the existing pixel array layout, and cut off or open the wiring between the pixels 410_M and 430_M and the bias line BL so that the switches 411_M and 431_M of the pixels 410_M and 430_M only provide the noise signal on the circuit loop to the readout circuit 401 as the background value. In addition, in one embodiment, the radiation detection device 400 can also arrange multiple rows of multiple pixels along the data line extension direction P1 to be electrically insulated from the bias line BL, or arrange a whole row of multiple pixels along the data line extension direction P1 to be electrically insulated from the bias line BL to obtain multiple background values, but is not limited to the above.

It is worth noting that the data lines D1_1 to D1_M are electrically connected to the same readout circuit 401, so that the pixels 410_1 to 410_M, 430_1 to 430_M have the same or similar circuit loop noise. The data lines D2_1 to D2_M are electrically connected to the same readout circuit 402, so that the pixels 420_1 to 420_M, 440_1 to 440_M have the same or similar circuit loop noise. Therefore, the background value read out from the switches 411_M and 431_M is suitable for correcting the detection results of the pixels 410_1 to 410_M, 430_1 to 430_M, and the background value read out from the switches 421_M and 441_M is suitable for correcting the detection results of the pixels 420_1 to 420_M, 440_1 to 440_M.

In addition, in one embodiment, the pixels 410_1 to 410_M, 430_1 to 430_M electrically connected to the readout circuit 401 may include a plurality of pixel designs such as pixels 410_M, 430_M for obtaining background noise. In other words, the data lines D1_1 to D1_M may include a plurality of data lines as background lines. However, the positions of the plurality of pixels designed as pixels 410_M, 430_1 to 430_M in the pixels 410_1 to 410_M, 430_1 to 430_M may be equidistant or unequally spaced or arbitrarily selected. Taking three background lines as an example, the first background line, the second background line, and the third background line are electrically connected to the readout circuit 401. The minimum spacing between the first background line and the second background line may be the same as the minimum spacing between the second background line and the third background line. Alternatively, the minimum spacing between the first background line and the second background line may be different from the minimum spacing between the second background line and the third background line. Similarly, the pixels 420_1 ˜ 420_M, 440_1 ˜ 440_M electrically connected to the readout circuit 402 may have the same, similar or different circuit layout as the pixels 410_1 ˜ 410_M, 430_1 ˜ 430_M electrically connected to the readout circuit 401 according to different usage requirements or designs.

In addition, according to the embodiments of the present disclosure, the spacing between components may be measured using an optical microscope (OM), a scanning electron microscope (SEM) or other suitable methods.

In summary, the radiation detection device disclosed in the present invention can provide suitable background noise through pixels that do not have photodiodes, or can provide suitable background noise through pixels that are electrically insulated from the bias line by breaking the bias branch line of at least one pixel in the active area of the detection panel or by cutting off the bias line in the peripheral area of the detection panel, so as to effectively obtain suitable background noise.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims (8)

1. A radiation detection device, comprising:

The detection panel comprises a plurality of data lines, a plurality of first pixels arranged in a first row, a plurality of second pixels arranged in a second row and a plurality of second pixels arranged in a third row, wherein the first row, the second row and the third row are parallel to the extending direction of the data lines,

Wherein each of the plurality of first pixels comprises a first switch and each of the plurality of second pixels and the further plurality of second pixels comprises a second switch, wherein each of the plurality of second pixels and the further plurality of second pixels comprises a photodiode and the plurality of first pixels does not comprise a photodiode,

A first background line of the plurality of data lines is electrically connected with the plurality of first pixels of the first row;

a first data line of the plurality of data lines electrically connected to the plurality of second pixels of the second row; and

A second data line of the plurality of data lines electrically connected to another of the plurality of second pixels of the third row and being adjacent to the first data line and far from the first background line,

The minimum distance between the first background line and the first data line is smaller than the minimum distance between the first data line and the second data line.

2. The radiation detection apparatus as recited in claim 1, wherein a ratio of the minimum spacing of the first data line and the second data line to the minimum spacing of the first background line and the first data line is greater than 6.

3. The radiation detection apparatus as recited in claim 1, further comprising:

A second background line of the plurality of data lines; and

And a third background line of the plurality of data lines, wherein a minimum pitch of the first background line and the second background line is the same as a minimum pitch of the second background line and the third background line.

4. The radiation detection apparatus as recited in claim 1, further comprising:

A second background line of the plurality of data lines; and

And a third background line of the plurality of data lines, wherein a minimum pitch of the first background line and the second background line is different from a minimum pitch of the second background line and the third background line.

5. The radiation detection device defined in claim 1, wherein the first background line, the first data line and the second data line are electrically connected to a same readout circuit.

6. A radiation detection device, comprising:

The detection panel comprises a plurality of data lines, a bias line, a plurality of first pixels and a plurality of second pixels,

Wherein each of the plurality of first pixels includes a switch and a photodiode, each of the plurality of second pixels includes the switch and the photodiode, and the plurality of first pixels is electrically insulated from the bias line, the plurality of second pixels is electrically connected to the bias line,

A first background line of the plurality of data lines is electrically connected to the plurality of second pixels;

a second background line of the plurality of data lines is electrically connected to another plurality of second pixels adjacent to the plurality of second pixels; and

A third background line of the plurality of data lines electrically connected to the plurality of first pixels,

Wherein a minimum pitch of the first background line and the second background line is the same as a minimum pitch of the second background line and the third background line.

7. The radiation detection apparatus as recited in claim 6, wherein the bias line comprises a bias leg and the first plurality of pixels are electrically isolated from the bias leg.

8. The radiation detecting apparatus of claim 6, wherein the first data line and the second data line are electrically connected to the same readout circuit.