WO2015178509A1 - 이종 화소 구조를 갖는 이미지 센서 - Google Patents
이종 화소 구조를 갖는 이미지 센서 Download PDFInfo
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- WO2015178509A1 WO2015178509A1 PCT/KR2014/004444 KR2014004444W WO2015178509A1 WO 2015178509 A1 WO2015178509 A1 WO 2015178509A1 KR 2014004444 W KR2014004444 W KR 2014004444W WO 2015178509 A1 WO2015178509 A1 WO 2015178509A1
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- 238000000034 method Methods 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 19
- 239000010409 thin film Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 5
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 4
- 229910052732 germanium Inorganic materials 0.000 claims description 4
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 229910002601 GaN Inorganic materials 0.000 claims description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 3
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 5
- 238000003491 array Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000004297 night vision Effects 0.000 description 3
- 238000001931 thermography Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
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Definitions
- the disclosed embodiments relate to an image sensor having a heterogeneous pixel structure, and more particularly, to an image sensor having a heterogeneous pixel structure in which pixels for detecting visible light and pixels for detecting ultraviolet rays or infrared rays are arranged together.
- the image sensor typically includes an array of multiple pixels that sense red, green and blue to produce a color image.
- the color image sensor may include an array of pixels for detecting cyan, yellow, green, and magenta instead of pixels for detecting red, green, and blue. All of these pixels are configured in the same structure to detect visible light, and each color is detected separately using only a color filter.
- the plurality of pixels may each include the same light sensing region and the same driving circuit having the same material and structure, and the red, green and blue pixels may be distinguished only by the color filter.
- an image sensor having a heterogeneous pixel structure in which pixels for detecting visible light and pixels for detecting ultraviolet light or infrared light are arranged together.
- the image sensor may include a pixel array including a plurality of first pixels and a plurality of second pixels having different sizes.
- the width in the horizontal direction of each second pixel is a first integer multiple of the width in the horizontal direction of each first pixel
- the width in the vertical direction of each second pixel is the width in the vertical direction of each first pixel.
- a second integer multiple of, wherein at least one of the first integer multiple and the second integer multiple is greater than 1, and a plurality of first pixels may be arranged around each second pixel.
- the first pixel may be configured to detect visible light
- the second pixel may be configured to detect ultraviolet light or infrared light.
- the first pixel may include a red pixel sensing red light, a green pixel sensing green light, and a blue pixel sensing blue light.
- the red, green, and blue pixels of the first pixel may be repeatedly arranged around the second pixel.
- the pixel array includes a first pixel array and a second pixel array disposed adjacent to each other, and the red, green, and blue pixels of the first pixel arranged around the second pixel of the first pixel array.
- the arrangement order of the plurality of pixels may be different from the arrangement order of the red pixels, the green pixels, and the blue pixels of the first pixel arranged around the second pixel of the second pixel array.
- the first pixels of the first pixel array and the first pixels of the second pixel array directly contacting the first pixels may be arranged to sense different colors.
- Each of the first pixels may include a first light sensing unit generating a photo current in response to incident light, a first driving circuit unit storing and outputting the photo current, and a first micro lens condensing light in the first light sensing region. It may include.
- each of the second pixels may include a second light sensing unit generating a photo current in response to incident light, a second driving circuit unit storing and outputting the photo current, and a second light condensing light in the second light sensing region. It may include a micro lens.
- the size of the second light sensing unit may be larger than the size of the first light sensing unit.
- the size of the second micro lens may be larger than the size of the first micro lens to cover each of the second pixels.
- the second light sensing unit may be divided into a plurality of sub areas in each of the second pixels.
- the number of divided sub-regions of the second light sensing unit may be equal to the product of the first integer multiple and the second integer multiple.
- the size of each of the divided sub-regions of the second light sensing unit may be equal to the size of the first light sensing unit.
- the size of the second micro lens is the same as the size of the first micro lens, the number of the second micro lens equal to the number of the divided plurality of sub-regions may be arranged in each of the second pixel. .
- the second driving circuit unit may be configured to aggregate and output photocurrent generated in each sub-region such that the divided plurality of sub-regions serve as one light sensing unit.
- the second driving circuit unit may be configured to individually output photocurrent generated in each sub-region so that the divided plurality of sub-regions act as independent light sensing units, respectively.
- the second driving circuit unit includes one capacitor for storing photocurrent, a plurality of thin film transistors switched to transfer photocurrent generated in each sub-region to the capacitor, and an output circuit for outputting photocurrent stored in the capacitor.
- the plurality of thin film transistors may be individually connected to subregions corresponding thereto.
- the plurality of thin film transistors may be connected between a plurality of sub regions corresponding to the plurality of thin film transistors, respectively.
- the plurality of sub-regions may share the capacitor and the output circuit.
- the first and second light sensing units may include at least one photosensitive material among Si, Ge, GaAs, InGaAs, GaN, InSb, InP, and HgCdTe.
- the image sensor having a heterogeneous pixel structure according to the disclosed embodiment efficiently arranges heterogeneous pixels of different sizes, for example, pixels for detecting visible light and pixels for detecting ultraviolet light or infrared light together on the same substrate. Can make it possible to do. Accordingly, an image sensor having a heterogeneous pixel structure according to the disclosed embodiment is relatively easy to process and can efficiently use the entire area. Such an image sensor may provide various functions such as night vision, thermal imaging, and three-dimensional imaging along with photographing a color image.
- FIG. 1 is a unit pixel array schematically illustrating a heterogeneous pixel structure of an image sensor according to an exemplary embodiment.
- FIG. 2A is a schematic cross-sectional view of the unit pixel array of FIG. 1 taken along the line AA ′.
- FIG. 2A is a schematic cross-sectional view of the unit pixel array of FIG. 1 taken along the line AA ′.
- FIG. 2B is a schematic cross-sectional view of the unit pixel array of FIG. 1 taken along the line BB ′.
- FIG. 3 is a unit pixel array schematically illustrating a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- FIG. 4 is a schematic cross-sectional view of the unit pixel array of FIG. 3 taken along the line BB ′.
- FIG. 5 is a unit pixel array schematically illustrating a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- FIG. 6 is a circuit diagram exemplarily illustrating a circuit structure of a driving circuit unit of a second pixel in the image sensor illustrated in FIG. 5.
- FIG. 7 is a unit pixel array schematically illustrating a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- FIG. 8 exemplarily shows an arrangement of a plurality of pixel arrays shown in FIG. 7.
- FIG. 9 is a unit pixel array schematically illustrating a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- FIG. 10 is a unit pixel array schematically showing a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- FIG. 1 is a unit pixel array 100 schematically illustrating a heterogeneous pixel structure of an image sensor according to an exemplary embodiment.
- the image sensor according to the present exemplary embodiment may include a pixel array including a plurality of first pixels 10, 20, 30, and a plurality of second pixels 40 having different sizes.
- 1 illustrates a unit pixel array 100 including a plurality of first pixels 10, 20, 30, and one second pixel 40.
- a large second pixel 40 is disposed at the center of the unit pixel array 100, and a plurality of first pixels 10, 20, and 30 are arranged along a circumference of the second pixel 40.
- the size of the second pixel 40 may be the size of each first pixel 10, 20 so that the plurality of first pixels 10, 20, 30 may be precisely arranged around the second pixel 40 without gaps.
- An integer multiple of 30 That is, the width in the horizontal direction of the second pixel 40 may be an integer multiple of the width in the horizontal direction of each of the first pixels 10, 20, and 30, and the width in the vertical direction of the second pixel 40 may also be It may be an integer multiple of the width of the first pixel 10, 20, 30 in the vertical direction.
- the second pixel 40 may be 2 ⁇ 2 times larger than the first pixels 10, 20, and 30. Then, twelve first pixels 10, 20, and 30 may be arranged around the second pixel 40.
- the first pixels 10, 20, and 30 may have a conventional pixel structure for detecting visible light.
- the first pixels 10, 20, and 30 may include a red pixel 10 for detecting red light, a green pixel 20 for detecting green light, and a blue pixel 30 for detecting blue light.
- the red pixels 10, the green pixels 20, and the blue pixels 30 may be alternately and repeatedly arranged around the second pixel 40.
- each of the first pixels 10, 20, and 30 may include first light sensing units 11, 21, and 31 for generating a photocurrent in response to visible light, and a first driving circuit unit 12 for storing and outputting the photocurrent. 22, 32).
- the first light sensing units 11, 21, and 31 may include, for example, photosensitive materials such as Si, Ge, InGaAs, GaN, InSb, InP, and the like to detect light in the visible light region.
- the second pixel 40 may be configured to detect light in an area other than visible light, for example, ultraviolet rays or infrared rays.
- the second pixel 40 may include a second light sensing unit 41 for generating a photo current in response to ultraviolet or infrared light, and a second driving circuit unit 42 for storing and outputting the photo current.
- the second light sensing unit 42 may include, for example, a photosensitive material such as Si, Ge, GaAs, InGaAs, GaN, InSb, InP, HgCdTe, or the like to sense light in the infrared or ultraviolet region.
- the second driving circuit part 42 of the second pixel 40 may include the first driving circuit parts 12, 22, and 32 of the first pixels 10, 20, and 30 that detect visible light.
- the circuit structure becomes more complicated and larger.
- the size of the second pixel 40 becomes larger than the size of the first pixels 10, 20, and 30.
- the size of the second pixel 40 is changed to the size of the first pixel 10. It is possible to efficiently arrange heterogeneous pixels 10, 20, 30, and 40 having different sizes by selecting an integer multiple of the sizes of the pixels 20, 30, and 20.
- the image sensor having such a heterogeneous pixel structure is relatively easy to process and can efficiently use the entire area.
- the image sensor having a heterogeneous pixel structure according to the present exemplary embodiment may provide various functions such as night vision, thermal imaging, and 3D imaging along with photographing a color image.
- FIG. 2A is a schematic cross-sectional view of the unit pixel array 100 of FIG. 1 taken along the line AA ′.
- the red pixels 10, the green pixels 20, the blue pixels 30, and the red pixels 10 are arranged in the order of example.
- Color filters 13, 23, 33 which transmit only visible light of a corresponding color may be arranged.
- a plurality of first micro lenses 50 may be arranged on the color filters 13, 23, 33 to collect light in each of the first light sensing regions 11, 21, 31.
- the plurality of first micro lenses 50 may be disposed one for each pixel 10, 20, and 30.
- 2B is a cross-sectional view of the unit pixel array 100 of FIG. 1 taken along the line BB ′.
- the green pixel 20 and the blue pixel 30 may be disposed on both side surfaces of the second pixel 40.
- Color filters 23 and 33 which transmit only green and blue visible light corresponding thereto may be arranged on the green pixel 20 and the blue pixel 30, and ultraviolet rays of a desired wavelength band may also be arranged on the second pixel 40.
- a band pass filter 43 that transmits only infrared light may be disposed.
- the first micro lenses 50 may be disposed on the color filters 23 and 33, and the second micro lenses 60 may focus light on the second light sensing region 41 on the band pass filter 43. Can be arranged.
- the size of the second micro lens 60 may be larger than that of the first micro lens 50 to cover the second pixel 40.
- the ratio of the size of the second micro lens 60 and the first micro lens 50 may be equal to the ratio of the size of the second pixel 40 and the first pixels 10, 20, and 30.
- the size of the second light sensing unit 41 of the second pixel 40 is the first light sensing unit 11, 21, 31 of the first pixel 10, 20, 30.
- the size of the second micro lens 60 is also larger than that of the first micro lens 50. In this case, since a plurality of micro lenses 50 and 60 of different sizes are required, it may be difficult to manufacture a micro lens array.
- the second light sensing unit 41 may be divided into a plurality of sub-regions 41a, 41b, 41c, and 41d in the second pixel 40.
- the second light sensing unit 41 is divided into four sub-regions 41a, 41b, 41c, and 41d.
- the number of the divided plurality of sub areas 41a, 41b, 41c, and 41d is a ratio of the width in the horizontal direction between the second pixel 40 and the first pixels 10, 20, and 30 and the second pixel 40. It may be equal to the product of the ratio of the width of the first pixel (10, 20, 30) in the vertical direction. As shown in FIG.
- the second light sensing unit 41 has four sub-regions 41a and 41b. , 41c, 41d).
- the size of each divided sub-region 41a, 41b, 41c, 41d of the second light sensing unit 41 may be equal to the size of the first light sensing unit 11, 21, 31.
- FIG. 4 is a cross-sectional view of the unit pixel array 110 of FIG. 3 taken along the line BB ′.
- a plurality of second micro lenses 60 ′ may be disposed to cover the divided sub regions 41a, 41b, 41c, and 41d, respectively. That is, the number of second micro lenses 60 ′ in the second pixel 40 may be equal to the number of divided sub-regions 41a, 41b, 41c, and 41d.
- the size of the second micro lens 60 ′ may be the same as the size of the first micro lens 50. Thus, it may be easy to fabricate a micro lens array.
- the second light sensing unit 41 is divided into a plurality of sub-regions (41a, 41b, 41c, 41d)
- the second pixel 40 itself is divided It is not. That is, the second driving circuit section 42 of the second pixel 40 is not divided.
- the second driving circuit section 42 is each sub-region 41a, 41b, 41c, 41d so that the divided plurality of sub-regions 41a, 41b, 41c, 41d can act as one light sensing section. It can be configured to output the combined photocurrent generated in the.
- the second pixel 40 may be divided into a plurality of sub pixels 40a, 40b, 40c, and 40d to improve the resolution of the infrared image or the ultraviolet image. That is, the divided plurality of sub areas 41a, 41b, 41c, and 41d may each function as independent light sensing units.
- the second driving circuit part 42 of the second pixel 40 may be divided into each divided sub area.
- Each of the photocurrents generated at 41a, 41b, 41c, and 41d can be individually output.
- FIG. 6 is a circuit diagram exemplarily illustrating a circuit structure of the second driving circuit unit 42 for this purpose.
- the second driving circuit part 42 transmits the photocurrent generated in one capacitor C and each of the sub-regions 41a, 41b, 41c, and 41d to the capacitor C to store the photocurrent.
- a plurality of switching thin film transistors T1, T2, T3, and T4, and output circuits T5 to T10 for amplifying and outputting the photocurrent stored in the capacitor C may be included.
- the plurality of thin film transistors T1, T2, T3, and T4 are connected between the subregions 41a, 41b, 41c, and 41d and the capacitor C, respectively.
- Select lines S1, S2, S3, and S4 are connected to gates of the thin film transistors T1, T2, T3, and T4, respectively.
- the photocurrent generated in the first sub region 41a may be stored in the capacitor C.
- the output transistor T5 is turned on through the scan line SCAN
- the photocurrent stored in the capacitor C may be output through the data line DATA.
- the reset transistor T8 is turned on through the reset line to initialize the capacitor C
- the second thin film transistor T2 is turned on through the second select line S2 to turn on the second sub-region 41b.
- Photocurrent generated in the can be stored in the capacitor (C). In this manner, the photocurrent generated in the plurality of sub-regions 41a, 41b, 41c, 41d can be output independently of each other.
- the plurality of divided sub-regions 41a, 41b, 41c, and 41d have the remaining circuit structure, that is, the capacitor (except for the thin film transistors T1, T2, T3, and T4 respectively connected thereto).
- C) and the output circuits T5 to T10 can be shared with each other. Therefore, the area of the second drive circuit section 42 can be saved as compared with the case where a separate drive circuit is arranged for each sub area 41a, 41b, 41c, 41d. Accordingly, the resolution of the infrared image or the ultraviolet image can be improved while maintaining the entire area of the second pixel 40 as it is.
- the unit pixel array 130 illustrated in FIG. 7 is a unit pixel array 130 schematically showing a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- the unit pixel array 130 illustrated in FIG. 7 has a size larger than that of the first pixels 10, 20, and 30. The difference is that it is 3 times larger.
- fourteen first pixels 10, 20, and 30 may be arranged around the second pixel 40. 1 and 7 show the case where the second pixel 40 is 2 ⁇ 2 times and 2 ⁇ 3 times larger than the first pixels 10, 20, 30, respectively, but this is only one example.
- the width in the horizontal direction of the second pixel 40 is greater than the width in the horizontal direction of the first pixels 10, 20, and 30 by a first integer multiple, and the width in the vertical direction of the second pixel 40 is increased.
- the size of the second pixel 40 may be selected such that at least one of the first integer multiple and the second integer multiple is greater than one. have.
- the red, green, and blue pixels 10, 20, 30 may not match. Therefore, in order to match the total number of red, green, and blue pixels 10, 20, and 30 in the image sensor as a whole, the plurality of unit pixel arrays 130 having different arrangement orders of the first pixels 10, 20, and 30 are different. You can also use
- the image sensor may include a first pixel array 130a and a second pixel array 130b disposed adjacent to each other.
- the arrangement order of the red, green, and blue pixels 10, 20, and 30 of the first pixels 10, 20, and 30 arranged around the second pixel 40 of the first pixel array 130a may be determined.
- the arrangement order of the red, green, and blue pixels 10, 20, and 30 of the first pixels 10, 20, and 30 arranged around the second pixel 40 of the two pixel array 130b may be different from each other. .
- the red, green, and blue pixels 10, 20, and 30 in the image sensor by using a plurality of unit pixel arrays 130a and 130b in which the red, green, and blue pixels 10, 20, and 30 are arranged in different order. It is possible to match the number of them.
- the first pixel of the first pixel array 130a disposed to be in direct contact with each other between the second pixel 40 of the first pixel array 130a and the second pixel 40 of the second pixel array 130b.
- the 10, 20, and 30 and the first pixels 10, 20, and 30 of the second pixel array 130b may be arranged to sense different colors.
- the green, blue, green, blue, and red pixels 10, 30, 10, 30, and 20 of the first pixel array 130a are second pixel array 130b.
- the blue, red, green, red, and blue pixels 30, 10, 20, 10, and 30 may be in contact with each other.
- the second light sensing unit 41 in the second pixel 40 includes a plurality of sub-regions 41a. , 41b, 41c, 41d, 41e, 41f). Since the size of the second pixel 40 is 2 ⁇ 3 times larger than the size of the first pixels 10, 20, and 30, the second light sensing unit 41 of the unit pixel array 140 has six sub-areas. (41a, 41b, 41c, 41d, 41e, 41f). In addition, as in the embodiment of FIG.
- each of the second driving circuit sections 42 may allow the divided sub-regions 41a, 41b, 41c, 41d, 41e, and 41f to act as one light sensing unit.
- the photocurrent generated in the sub-regions 41a, 41b, 41c, 41d, 41e, and 41f may be outputted.
- the 10 is a unit pixel array 150 schematically showing a heterogeneous pixel structure of an image sensor according to another exemplary embodiment.
- the divided plurality of sub-regions 41a, 41b, 41c, 41d, 41e, and 41f may be formed. It can act as an independent light sensing unit.
- the second driving circuit part 42 of the second pixel 40 may be configured to individually output photocurrent generated in each of the divided sub-regions 41a, 41b, 41c, 41d, 41e, and 41f.
- the second driving circuit section 42 may have a circuit structure substantially the same as the circuit structure shown in FIG. 6, and only a thin film transistor disposed between the subregions 41a, 41b, 41c, 41d, 41e, 41f and the capacitor. The number of and the number of selected lines only increase to six.
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
Description
Claims (19)
- 크기가 서로 다른 다수의 제 1 화소와 다수의 제 2 화소를 포함하는 화소 어레이를 포함하며,각각의 제 2 화소의 가로 방향의 폭은 각각의 제 1 화소의 가로 방향의 폭의 제 1 정수배이며,각각의 제 2 화소의 세로 방향의 폭은 각각의 제 1 화소의 세로 방향의 폭의 제 2 정수배이고,상기 제 1 정수배와 제 2 정수배 중에서 적어도 하나는 1보다 크며,각각의 제 2 화소 주위에 다수의 제 1 화소들이 배열되어 있는, 이미지 센서.
- 제 1 항에 있어서,상기 제 1 화소는 가시광을 감지하도록 구성되며, 상기 제 2 화소는 자외선 또는 적외선을 감지하도록 구성되는 이미지 센서.
- 제 2 항에 있어서,상기 제 1 화소는 적색광을 감지하는 적색 화소, 녹색광을 감지하는 녹색 화소, 및 청색광을 감지하는 청색 화소를 포함하는 이미지 센서.
- 제 3 항에 있어서,상기 제 1 화소의 상기 적색 화소, 녹색 화소 및 청색 화소들이 상기 제 2 화소의 주위에 반복적으로 배열되어 있는 이미지 센서.
- 제 4 항에 있어서,상기 화소 어레이는 서로 인접하여 배치된 제 1 화소 어레이와 제 2 화소 어레이를 포함하며,상기 제 1 화소 어레이의 제 2 화소의 주위에 배열된 제 1 화소의 적색 화소, 녹색 화소 및 청색 화소들의 배치 순서와 상기 제 2 화소 어레이의 제 2 화소의 주위에 배열된 제 1 화소의 적색 화소, 녹색 화소 및 청색 화소들의 배치 순서가 서로 다른 이미지 센서.
- 제 5 항에 있어서,상기 제 1 화소 어레이의 제 1 화소들과 그에 직접 접하는 상기 제 2 화소 어레이의 제 1 화소들은 서로 다른 색을 감지하는 이미지 센서.
- 제 1 항에 있어서,상기 각각의 제 1 화소는, 입사광에 응답하여 광전류를 발생시키는 제 1 광센싱부, 상기 광전류를 저장하고 출력시키는 제 1 구동 회로부, 및 상기 제 1 광센싱 영역에 빛을 집광하는 제 1 마이크로 렌즈를 포함하며,상기 각각의 제 2 화소는, 입사광에 응답하여 광전류를 발생시키는 제 2 광센싱부, 상기 광전류를 저장하고 출력시키는 제 2 구동 회로부, 및 상기 제 2 광센싱 영역에 빛을 집광하는 제 2 마이크로 렌즈를 포함하는 이미지 센서.
- 제 7 항에 있어서,상기 제 2 광센싱부의 크기는 상기 제 1 광센싱부의 크기보다 큰 이미지 센서.
- 제 8 항에 있어서,상기 제 2 마이크로 렌즈의 크기는 상기 각각의 제 2 화소를 덮도록 상기 제 1 마이크로 렌즈의 크기보다 큰 이미지 센서.
- 제 7 항에 있어서,상기 각각의 제 2 화소 내에서 상기 제 2 광센싱부는 다수의 서브 영역으로 분할되어 있는 이미지 센서.
- 제 10 항에 있어서,상기 제 2 광센싱부의 분할된 다수의 서브 영역의 개수는 제 1 정수배와 제 2 정수배의 곱과 같은 이미지 센서.
- 제 11 항에 있어서,상기 제 2 광센싱부의 상기 분할된 각각의 서브 영역의 크기는 상기 제 1 광센싱부의 크기와 같은 이미지 센서.
- 제 11 항에 있어서,상기 제 2 마이크로 렌즈의 크기는 상기 제 1 마이크로 렌즈의 크기와 동일하며, 상기 분할된 다수의 서브 영역의 개수와 동일한 개수의 제 2 마이크로 렌즈가 상기 각각의 제 2 화소 내에 배열되어 있는 이미지 센서.
- 제 10 항에 있어서,상기 제 2 구동 회로부는 상기 분할된 다수의 서브 영역이 하나의 광센싱부로서 작용하도록 각각의 서브 영역에서 발생한 광전류를 종합하여 출력하도록 구성되는 이미지 센서.
- 제 10 항에 있어서,상기 제 2 구동 회로부는 상기 분할된 다수의 서브 영역이 각각 독립적인 광센싱부로서 작용하도록 각각의 서브 영역에서 발생한 광전류를 각각 개별적으로 출력하도록 구성되는 이미지 센서.
- 제 15 항에 있어서,상기 제 2 구동 회로부는, 광전류를 저장하기 위한 하나의 캐패시터, 각각의 서브 영역에서 발생한 광전류를 상기 캐패시터에 전달하도록 스위칭되는 다수의 박막 트랜지스터, 및 상기 캐패시터에 저장된 광전류를 출력하기 위한 출력 회로를 포함하며, 상기 다수의 박막 트랜지스터는 그에 대응하는 서브 영역에 각각 개별적으로 연결되어 있는 이미지 센서.
- 제 16 항에 있어서,상기 다수의 박막 트랜지스터는 그에 각각 대응하는 다수의 서브 영역들과 상기 캐패시터 사이에 연결되어 있는 이미지 센서.
- 제 16 항에 있어서,상기 다수의 서브 영역들은 상기 캐패시터와 출력 회로를 서로 공유하는 이미지 센서.
- 제 7 항에 있어서,상기 제 1 및 제 2 광센싱부는 Si, Ge, GaAs, InGaAs, GaN, InSb, InP, 및 HgCdTe 중에서 적어도 하나의 감광성 재료를 포함하는 이미지 센서.
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KR1020167029974A KR102250192B1 (ko) | 2014-05-19 | 2014-05-19 | 이종 화소 구조를 갖는 이미지 센서 |
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KR20170082883A (ko) * | 2016-01-07 | 2017-07-17 | 삼성전자주식회사 | 열화상 이미지를 제공하는 전자 장치 및 그의 동작 방법 |
JP6951917B2 (ja) * | 2017-09-15 | 2021-10-20 | 株式会社ソニー・インタラクティブエンタテインメント | 撮像装置 |
US11153514B2 (en) * | 2017-11-30 | 2021-10-19 | Brillnics Singapore Pte. Ltd. | Solid-state imaging device, method for driving solid-state imaging device, and electronic apparatus |
KR20210047483A (ko) * | 2019-10-22 | 2021-04-30 | 에스케이하이닉스 주식회사 | 복수의 촬영 모드를 지원하는 이미지 센서 |
US11869913B2 (en) | 2021-06-01 | 2024-01-09 | Samsung Electronics Co., Ltd. | Pixel array of image sensor and method of manufacturing the same |
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