WO2019198291A1 - 撮像素子および撮像素子の製造方法 - Google Patents
撮像素子および撮像素子の製造方法 Download PDFInfo
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- WO2019198291A1 WO2019198291A1 PCT/JP2019/001262 JP2019001262W WO2019198291A1 WO 2019198291 A1 WO2019198291 A1 WO 2019198291A1 JP 2019001262 W JP2019001262 W JP 2019001262W WO 2019198291 A1 WO2019198291 A1 WO 2019198291A1
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- infrared light
- filter
- protective film
- attenuation filter
- pixel
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
- H10F39/802—Geometry or disposition of elements in pixels, e.g. address-lines or gate electrodes
- H10F39/8023—Disposition of the elements in pixels, e.g. smaller elements in the centre of the imager compared to larger elements at the periphery
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
- H10F39/805—Coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
- G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/011—Manufacture or treatment of image sensors covered by group H10F39/12
- H10F39/024—Manufacture or treatment of image sensors covered by group H10F39/12 of coatings or optical elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/10—Integrated devices
- H10F39/12—Image sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
- H10F39/803—Pixels having integrated switching, control, storage or amplification elements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
- H10F39/805—Coatings
- H10F39/8053—Colour filters
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
- H10F39/806—Optical elements or arrangements associated with the image sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
- H10F39/806—Optical elements or arrangements associated with the image sensors
- H10F39/8063—Microlenses
Definitions
- the present invention relates to an image sensor and a method for manufacturing the image sensor. Specifically, the present invention relates to an image sensor having a filter that attenuates infrared light and a method of manufacturing the image sensor.
- an imaging element condenses incident light with an on-chip lens and performs photoelectric conversion according to the incident light.
- a color filter that transmits infrared light and visible light of a predetermined wavelength among the collected incident light and an infrared light attenuation filter that transmits visible light and attenuates infrared light among the collected incident light are used.
- Patent Document 1 there is Patent Document 1 as such a technique.
- the above-described conventional technology includes a solid-state imaging device having a configuration in which an infrared light attenuation filter, a visible light color filter, and an on-chip lens are sequentially stacked on a photoelectric conversion unit, and visible light and infrared light are transmitted through the on-chip lens.
- Infrared light attenuating filters often use color materials made from organic dyes with a high degree of freedom in spectral design.
- this solid-state imaging device there is a problem that the surface of the infrared light attenuation filter is roughened in the stacking process.
- the color material of the infrared light attenuating filter is eluted into the chemical solution, and a loophole is formed in the infrared light attenuating filter.
- a color filter is laminated on this infrared light attenuating filter, there is a problem that the color filter material enters the loophole, causes a point defect, and the image quality deteriorates.
- the present invention has been made in view of the above-described problems, and an object thereof is to prevent the occurrence of defects in an infrared light attenuation filter and to prevent deterioration of image quality.
- the present disclosure has been made to solve the above-described problems.
- the first aspect of the present disclosure includes a photoelectric conversion unit that performs photoelectric conversion according to incident light, and collects the incident light in the photoelectric conversion unit.
- An on-chip lens that emits light, a color filter that transmits infrared light and visible light of a predetermined wavelength among the collected incident light, and an infrared that transmits visible light of the collected incident light and transmits infrared light.
- An imaging device comprising: an infrared light attenuation filter that attenuates light; and a protective film that is disposed adjacent to the infrared light attenuation filter and protects the infrared light attenuation filter.
- the protective film may be disposed adjacent to the color filter, and the infrared light attenuation filter may attenuate infrared light transmitted through the color filter.
- the protective film may protect the infrared light attenuation filter when the color filter is formed.
- the protective film may be configured to have substantially the same refractive index as that of the color filter.
- the protective film is disposed adjacent to the on-chip lens, and the color filter is disposed adjacent to the infrared light attenuation filter.
- the visible light having the predetermined wavelength may be transmitted among the incident light transmitted through the light.
- the protective film may protect the infrared light attenuation filter when the on-chip lens is formed.
- the photoelectric conversion unit, the on-chip lens, the color filter, the infrared light attenuation filter, a pixel including the protective film, and infrared light among the collected incident light is a surface adjacent to the infrared light pixel of the infrared light attenuation filter It may be further arranged.
- the protective film may be made of an organic material.
- the protective film may be made of an inorganic material.
- the protective film may be configured by laminating an organic material and an inorganic material.
- the second aspect of the present disclosure includes a step of forming a photoelectric conversion unit that performs photoelectric conversion according to incident light, a step of forming an on-chip lens that collects the incident light on the photoelectric conversion unit, and Forming a color filter that transmits infrared light and visible light of a predetermined wavelength from the collected incident light; and transmitting visible light and attenuating infrared light from the collected incident light Forming an infrared light attenuation filter, and forming a protective film that is disposed adjacent to the infrared light attenuation filter and protects the infrared light attenuation filter. is there.
- the imaging device of the present disclosure has an effect that a protective film is disposed on the surface of the infrared light attenuation filter.
- the protection of the infrared light attenuation filter by the protective film is assumed.
- FIG. 3 is a diagram illustrating a configuration example of a pixel according to the first embodiment of the present disclosure.
- FIG. It is a figure which shows the structural example of the protective film which concerns on embodiment of this indication.
- FIG. 1 is a diagram illustrating a configuration example of an imaging element according to an embodiment of the present disclosure.
- the image pickup device 1 of FIG. 1 includes a pixel array unit 10, a vertical drive unit 20, a column signal processing unit 30, and a control unit 40.
- the pixel array unit 10 is configured by arranging the pixels 100 in a two-dimensional grid.
- the pixel 100 generates an image signal corresponding to the irradiated light.
- the pixel 100 includes a photoelectric conversion unit that generates charges according to the irradiated light.
- the pixel 100 further includes a pixel circuit. This pixel circuit generates an image signal based on the charges generated by the photoelectric conversion unit. The generation of the image signal is controlled by a control signal generated by the vertical drive unit 20 described later.
- signal lines 11 and 12 are arranged in an XY matrix.
- the signal line 11 is a signal line that transmits a control signal of the pixel circuit in the pixel 100, and is arranged for each row of the pixel array unit 10, and is wired in common to the pixels 100 arranged in each row.
- the signal line 12 is a signal line that transmits an image signal generated by the pixel circuit of the pixel 100, and is arranged for each column of the pixel array unit 10, and is wired in common to the pixels 100 arranged in each column.
- the vertical drive unit 20 generates a control signal for the pixel circuit of the pixel 100.
- the vertical drive unit 20 transmits the generated control signal to the pixel 100 via the signal line 11 in FIG.
- the column signal processing unit 30 processes the image signal generated by the pixel 100.
- the column signal processing unit 30 processes the image signal transmitted from the pixel 100 via the signal line 12 shown in FIG.
- the processing in the column signal processing unit 30 corresponds to, for example, analog-digital conversion that converts an analog image signal generated in the pixel 100 into a digital image signal.
- the image signal processed by the column signal processing unit 30 is output as an image signal of the image sensor 1.
- the control unit 40 controls the entire image sensor 1.
- the control unit 40 controls the image sensor 1 by generating and outputting a control signal for controlling the vertical driving unit 20 and the column signal processing unit 30.
- the control signal generated by the control unit 40 is transmitted to the vertical drive unit 20 and the column signal processing unit 30 through signal lines 41 and 42, respectively.
- FIG. 2 is a diagram illustrating a configuration example of a pixel according to the first embodiment of the present disclosure.
- FIG. 2 is a schematic cross-sectional view showing the configuration of the pixels 100 arranged in the pixel array unit 10. Note that an infrared light pixel 200 is further arranged in the pixel array section 10 of FIG.
- the pixel 100 includes an on-chip lens 171, a color filter 161, a protective film 151, an infrared light attenuation filter 141, a light shielding film 131, a semiconductor substrate 111, an insulating layer 113, a wiring layer 114, and a support substrate. 115.
- the semiconductor substrate 111 is a semiconductor substrate on which the photoelectric conversion portion of the pixel 100 described in FIG. 1 and the semiconductor portion of the pixel circuit are formed. In addition, semiconductor portions of the vertical driving unit 20, the column signal processing unit 30, and the control unit 40 are further formed on the semiconductor substrate 111. In the figure, among these, the photoelectric conversion unit 101 of the pixel 100 is shown. For the sake of convenience, it is assumed that the semiconductor substrate 111 in the figure is configured in a p-type well region.
- the photoelectric conversion unit 101 includes an n-type semiconductor region 112 and a p-type well region around the n-type semiconductor region 112.
- Photoelectric conversion corresponding to incident light is performed at a pn junction formed at the interface between the n-type semiconductor region 112 and the p-type well region, and charges generated by this photoelectric conversion are held in the n-type semiconductor region 112.
- An image signal is generated by a pixel circuit (not shown) based on the charges generated by the photoelectric conversion of the photoelectric conversion unit 101.
- a pixel separation unit 121 is disposed between the pixels 100 in the semiconductor substrate 111.
- the pixel separation unit 121 is a region that prevents charge movement between the pixels 100.
- an insulating film 155 is disposed on the back surface of the semiconductor substrate 111.
- a vertical drive unit 20, a column signal processing unit 30, and a control unit 40 are formed on the semiconductor substrate 111.
- the wiring layer 114 is a wiring that transmits an image signal generated in the pixel 100 and a control signal for controlling the pixel circuit.
- the wiring layer 114 constitutes the signal lines 11 and 12 described in FIG. Further, the wiring layers 114 are insulated from each other by the insulating layer 113.
- the imaging device 1 including the pixel 100 in FIG. 1 is a back-illuminated imaging device in which the wiring layer 114 is disposed on a surface different from the surface on which light is incident on the semiconductor substrate 111.
- the on-chip lens 171 is a lens that condenses incident light on the photoelectric conversion unit 101.
- the on-chip lens 171 causes incident light to enter the photoelectric conversion unit 101 via the color filter 161 and the infrared light attenuation filter 141.
- the on-chip lens 171 can be made of resin, for example.
- the color filter 161 is an optical filter that transmits visible light having a predetermined wavelength out of visible light.
- the visible light corresponds to light having a wavelength of 380 nm to 750 nm, for example.
- this color filter 161 for example, three kinds of color filters that respectively transmit red light (wavelength 700 nm), green light (wavelength 546 nm), and blue light (436 nm) can be used. These color filters 161 transmit visible light having a corresponding wavelength.
- the color filter 161 transmits infrared light.
- the infrared light corresponds to light having a wavelength of 750 nm to 1200 nm, for example.
- the characters described in the color filter 161 in the figure are characters indicating the type of the color filter 161.
- the color filters 161 on which “R”, “G”, and “B” are described correspond to the color filters 161 that transmit red light, green light, and blue light, respectively.
- the infrared light attenuation filter 141 is an optical filter that attenuates infrared light having a specific wavelength out of infrared light.
- this infrared light attenuation filter 141 for example, an infrared light attenuation filter 141 that attenuates infrared light having a wavelength of 850 nm or 940 nm can be used.
- These infrared light attenuation filters 141 attenuate and remove infrared light having a corresponding wavelength. That is, the infrared light attenuation filter 141 transmits infrared light having a wavelength other than the corresponding wavelength among infrared light. On the other hand, the infrared light attenuation filter 141 transmits visible light.
- color mixing is a phenomenon in which an error occurs in an image signal when light having a wavelength different from a desired wavelength enters the pixel 100.
- the pixel 100 by stacking the infrared light attenuation filter 141 and the color filter 161, it is possible to make the film thickness of the infrared light pixel 200 and the pixel 100, which will be described later, equal, and to prevent the occurrence of a step. it can. For this reason, luminance unevenness can be reduced.
- the infrared light attenuating filter 141 for example, an infrared light attenuating filter in which a dye-based color material made of an organic pigment as a raw material is dispersed in a resin can be used. By using such an infrared light attenuation filter, it is possible to improve the degree of freedom in spectral design. However, the infrared light attenuating filter 141 aggregates the color material when the resin is cured, and forms a relatively large aggregate. When the infrared light attenuating filter 141 in which the aggregate is formed is processed, the aggregate is eluted and a loophole is formed.
- the color filter 161 When the color filter 161 is laminated there, the color filter 161 enters the loophole, and the point defect in visible light increases. Further, the effective film thickness of the infrared light attenuation filter 141 becomes thinner as the color material is eluted. Details of the elution of the aggregate of the infrared light attenuation filter 141 will be described later.
- the protective film 151 is disposed on the surface of the infrared light attenuation filter 141 to protect the infrared light attenuation filter 141.
- the protective film 151 shown in the figure protects the infrared light attenuation filter 141 when the color filter 161 is formed on the infrared light attenuation filter 141.
- the protective film 151 needs to be made of a material that is insoluble in the resist developer or stripper used when processing the infrared light attenuation filter 141 and the like. Further, the protective film 151 preferably has a transmittance of 80% or more in the visible range of a wavelength of 400 nm to 700 nm. This is to prevent a decrease in sensitivity of the pixel 100.
- the film thickness of the protective film 151 can be configured to be thicker than 1 nm, for example.
- the protective film 151 can be composed of an inorganic material such as SiO 2 , SiN, SiON, SiCN, and SiOC. At this time, the protective film 151 can be formed by ALD (Atomic Layer Deposition), CVD (Chemical Vapor Deposition), and PVD (Physical Vapor Deposition) such as sputtering and vacuum deposition.
- ALD Atomic Layer Deposition
- CVD Chemical Vapor Deposition
- PVD Physical Vapor Deposition
- the protective film 151 is composed of an inorganic material, for example, it is preferable to employ a material or a manufacturing method having a temperature of 260 ° C. or less during film formation. This is because deterioration of the infrared light attenuation filter 141 due to heating can be prevented.
- the protective film 151 can also be made of an organic material such as acrylic, styrene, shirosan, epoxy, and cyclic olefin resins. At this time, the protective film 151 can use a thermosetting resin or a photocurable resin.
- the protective film 151 can be formed in multiple layers, or a composite film made of an inorganic material and an organic material.
- the protective film 151 is made of a material having substantially the same refractive index as that of the color filter 161. This is because reflection of incident light at the interface between the color filter 161 and the protective film 151 can be reduced and sensitivity can be improved. Further, even when the refractive index of the protective film 151 is set to an intermediate value between the refractive indexes of the color filter 161 and the infrared light attenuation filter 141, reflection of incident light can be reduced.
- the light shielding film 131 is a film that is disposed at the boundary of the pixel 100 on the surface of the semiconductor substrate 111 and shields light transmitted through the color filter 161 of the adjacent pixel 100.
- the infrared light pixel 200 is a pixel that generates an image signal corresponding to infrared light of incident light.
- the infrared light pixel 200 is different from the pixel 100 in that a visible light attenuation filter 181 is disposed instead of the color filter 161 and the infrared light attenuation filter 141.
- the visible light attenuating filter 181 in the figure is configured by laminating a plurality of color filters.
- the visible light attenuation filter 181 includes a color filter that transmits blue light formed in the same layer as the infrared light attenuation filter 141 and a color filter that transmits red light formed in the same layer as the color filter 161. It consists of.
- FIG. 3 is a diagram illustrating a configuration example of the protective film according to the embodiment of the present disclosure. This figure is a diagram for explaining the effect of the protective film 151 when the infrared light attenuation filter 14 is processed and when the color filter 161 is formed.
- “a” represents a state in which the infrared light attenuation filter 141 is formed on the insulating film 155.
- the infrared light attenuating filter 141 is formed by applying a resin as a material for the infrared light attenuating filter 141 on the insulating film 155 and then curing it. During this curing, the color material aggregate 142 shown in FIG.
- an opening 406 is formed in the infrared light attenuation filter 141.
- This can be performed by forming a resist having an opening at a position where the opening 406 is formed on the surface of the infrared light attenuation filter 141 and etching the infrared light attenuation filter 141 using the resist as a mask.
- the resist is removed with a solvent.
- the aggregate 142 is eluted into the solvent.
- a through hole 143 b is a hole generated by elution of the aggregate 142. Even when the infrared light attenuation filter 141 is not processed, the through hole 143 is formed by a solvent used when forming the color filter 161 described later.
- a color filter is disposed in the opening 406 and the color filter 161 is laminated.
- the color filter material enters the hole 143.
- C in the figure represents this state
- a through hole 144 in c in the figure represents a through hole into which the color filter has entered.
- This through hole 144 becomes a point defect, and the luminance unevenness occurs in the image signal generated by the pixel 100. Further, even if the elution of the aggregate 142 is not uniform for each pixel 100, the luminance unevenness occurs. As a result, the image quality is degraded. Further, when the coloring material is eluted, the effective film thickness of the infrared light attenuation filter 141 is reduced.
- infrared light attenuation filter 141 having a film thickness that allows for a decrease in the film thickness.
- the infrared light attenuating filter 141 is thickened, the sensitivity is lowered and the color mixture is increased as the oblique incident light from the adjacent pixels 100 is increased. Even in this case, the image quality is deteriorated.
- the protective film 151 is disposed on the surface of the infrared light attenuation filter 141 to protect the infrared light attenuation filter 141.
- D in the figure represents the case where the protective film 151 is arrange
- the adhesion strength of the color filter 161 can be improved by disposing the protective film 151 below the color filter 161.
- the occurrence of problems such as peeling of the color filter 161 can be reduced.
- the protective film 151 is formed of an organic material such as an acrylic resin, high adhesion strength with the color filter 161 can be obtained.
- FIGS. 4 to 6 are diagrams illustrating a method for manufacturing the image sensor according to the first embodiment of the present disclosure.
- the manufacturing process of the image sensor 1 described in FIG. 2 will be described with reference to FIGS. Note that a protective film 151 made of an organic material is assumed as the protective film 151.
- the pixel separation portion 121 and the insulating film 155 are formed on the semiconductor substrate 111 on which the photoelectric conversion portion 101 is formed.
- This can be done, for example, as follows. First, a trench is formed in a region between the pixels 100 of the semiconductor substrate 111. Next, an insulating film is formed on the surface of the semiconductor substrate 111 in which the trench is formed. For this film formation, for example, CVD can be used. Thus, an insulator can be disposed in the trench, and an insulator film can be formed on the surface of the semiconductor substrate 111, so that the pixel isolation portion 121 and the insulating film 155 can be formed simultaneously.
- the light shielding film 131 is disposed on the surface of the insulating film 155. This can be performed, for example, by forming a material film of the light shielding film 131 on the surface of the insulating film 155 and etching and removing the material film other than the boundary region of the pixel 100.
- an infrared light attenuation filter 141 is formed on the surfaces of the insulating film 155 and the light shielding film 131. This can be performed, for example, by applying and curing a resin that is a material of the infrared light attenuation filter 141. This step is an example of the infrared light attenuation filter forming step described in the claims.
- a protective film 151 is formed adjacent to the infrared light attenuation filter 141.
- This step is an example of the protective film forming step described in the claims. Note that the surface of the infrared light attenuation filter 141 can be modified before the protective film 151 is formed. This can be done, for example, by ashing.
- a resist 401 is applied adjacent to the protective film 151.
- an opening 402 is formed in the resist 401. This can be done by lithography.
- the protective film 151 and the infrared light attenuation filter 141 are etched using the resist 401 as a mask. This can be done by dry etching. Etching is performed until the resist 401 is removed. As a result, an opening 403 is formed in the protective film 151 and the infrared light attenuation filter 141.
- a color filter that transmits blue light is formed in the opening 404. This can be formed by applying a photosensitive color filter material resin, and performing exposure and development.
- a color filter 161 is formed. This can be formed by performing the steps of applying, exposing and developing the resin for the color filter material having photosensitivity for each type of the color filter 161. This step is an example of the color filter forming step described in the claims.
- a resin film 405 that is a material of the on-chip lens is applied.
- the surface of the resin film 405 is processed into a hemispherical shape. This can be performed, for example, by forming a resist having the same shape as the on-chip lens 171 on the surface of the resin film 405, performing dry etching, and transferring the shape of the resist to the resin film 405.
- This step is an example of an on-chip lens forming step described in the claims.
- the image pickup device 1 can be manufactured through the above steps. In the steps e, f, and g in FIG. 5, the surface of the infrared light attenuation filter 141 is protected by the protective film 151.
- the defect of the infrared light attenuation filter 141 is generated by disposing the protective film 151 adjacent to the infrared light attenuation filter 141. Can be prevented, and deterioration in image quality can be prevented.
- the protective film 151 is disposed adjacent to the infrared light attenuation filter 141.
- the imaging device 1 according to the second embodiment of the present disclosure is different from the above-described first embodiment in that it further includes a protective film 152.
- FIG. 7 is a diagram illustrating a configuration example of a pixel according to the second embodiment of the present disclosure.
- the pixel 100 in the figure is different from the pixel 100 described in FIG. 2 in that it further includes a protective film 152.
- the protective film 152 is disposed between the protective film 151 and the color filter 161 and protects the infrared light attenuation filter 141.
- the protective film 152 is further disposed on the surface of the infrared light attenuation filter 141 adjacent to the infrared light pixel 200, and protects the side surface of the infrared light attenuation filter 141 when the infrared light attenuation filter 141 is processed.
- the protective film 152 can be made of the same material as the protective film 151.
- the protective film 151 can be made of SiO 2 and the protective film 152 can be made of SiN.
- the protective films 151 and 152 can be made of an inorganic material and an organic material, respectively.
- the protective film 151 made of an inorganic material can be used as a mask in the step of etching the infrared light attenuation filter 141 described later. Further, by using the protective film 152 made of an organic material, the adhesion strength with the color filter 161 can be improved.
- FIGS. 8 and 9 are diagrams illustrating a method of manufacturing an image sensor according to the second embodiment of the present disclosure.
- the manufacturing process of the image pickup device 1 described in FIG. 7 will be described with reference to FIGS.
- FIG. 8 is a process executed subsequent to c in FIG.
- the protective film 151 is assumed to be a protective film 151 made of an inorganic material.
- a resist 411 is arranged on the surface of the protective film 151, and an opening 412 is formed.
- the resist 411 can be formed to have a smaller film thickness than the resist 401 described in FIG.
- the protective film 151 is etched using the resist 411 as a mask. This etching can be performed by dry etching. Etching is performed until the resist 411 is removed. Unlike e in FIG. 5, since the infrared light attenuation filter 141 is not etched, a thin resist 411 can be used.
- the infrared light attenuation filter 141 is etched using the protective film 151 as a mask.
- dry etching is used, and the etching can be performed under the conditions for selectively etching the infrared light attenuation filter 141.
- the opening 414 can be formed.
- the protective film 151 made of an inorganic material the mask 411 for forming the infrared light attenuation filter 141 can be thinned, and the manufacturing process can be simplified.
- a protective film 152 is laminated. Thereby, the protective film 152 is laminated on the surface of the protective film 151. At the same time, the protective film 152 is disposed in the opening 414. That is, the protective film 152 is disposed on the surface of the insulating film 155 in the infrared light pixel 200 and the protective film 152 is also disposed on the side surface of the infrared light attenuation filter 141 of the pixel 100.
- a color filter 415 that transmits blue light is formed in the opening 414.
- a color filter 161 is formed.
- the on-chip lens 171 is formed by the steps described in h and i in FIG.
- the image pickup device 1 can be manufactured through the above steps.
- the protective film 152 By disposing the protective film 152, the elution of aggregates from the side surface of the infrared light attenuation filter 141 of the pixel 100 adjacent to the infrared light pixel 200 can be prevented during the step e in FIG. Thereby, generation
- the image pickup device 1 can protect the side surface of the infrared light attenuation filter 141 by disposing the protective film 152, further reducing the image quality. Can be prevented.
- the imaging device 1 according to the first embodiment described above uses the infrared light attenuation filter 141 formed continuously at the boundary of the pixel 100.
- the imaging device 1 according to the third embodiment of the present disclosure is different from the first embodiment described above in that a separation wall that separates the infrared light attenuation filter 141 is disposed at the boundary of the pixel 100. Different.
- FIG. 10 is a diagram illustrating a configuration example of a pixel according to the third embodiment of the present disclosure.
- the pixel 100 in the figure is different from the pixel 100 described in FIG. 2 in that a separation wall 132 is provided.
- the separation wall 132 is disposed at the boundary between the adjacent pixels 100 and the pixel 100 and the infrared light pixel 200 to separate the infrared light attenuation filter 141.
- the separation wall 132 can be made of an oxide, for example.
- the configuration of the image sensor 1 is not limited to this example.
- a configuration in which a separation wall is also provided at the boundary of the pixel 100 in the region where the color filter 161 is disposed can be employed.
- the imaging device 1 can reduce the occurrence of color mixing by including the separation wall 132.
- the imaging device 1 of the first embodiment described above the infrared light attenuation filter 141 and the color filter 161 are sequentially laminated on the surface of the insulating film 155 formed on the semiconductor substrate 111.
- the imaging device 1 according to the fourth embodiment of the present disclosure is different from the above-described first embodiment in that the infrared light attenuation filter 141 and the color filter 161 are replaced with each other.
- FIG. 11 is a diagram illustrating a configuration example of a pixel according to the fourth embodiment of the present disclosure.
- the pixel 100 in the figure is different from the pixel 100 described in FIG. 2 in that a color filter 161 and an infrared light attenuation filter 141 are sequentially arranged on the surface of the insulating film 155.
- the visible light that has passed through the infrared light attenuation filter 141 is incident on the color filter 161 in FIG.
- the protective film 151 shown in the figure can protect the infrared light attenuation filter 141 in the process of processing the infrared light attenuation filter 141 and the process of forming the on-chip lens 171.
- the imaging device 1 includes the infrared light attenuation filter 141 in the imaging device 1 configured by sequentially stacking the color filter 161 and the infrared light attenuation filter 141. Can be protected.
- the stacked color filters are used as the visible light attenuation filter 181 of the infrared light pixel 200.
- the imaging device 1 according to the fifth embodiment of the present disclosure is different from the above-described first embodiment in that a single-layer visible light attenuation filter is used.
- FIG. 12 is a diagram illustrating a configuration example of a pixel according to the fifth embodiment of the present disclosure.
- the pixel 100 in the figure is different from the pixel 100 described in FIG. 2 in that a visible light attenuation filter 182 is provided instead of the visible light attenuation filter 181 of the infrared light pixel 200.
- the visible light attenuation filter 182 in the figure is a filter that attenuates visible light and transmits infrared light.
- the visible light attenuation filter 182 for example, a filter configured by mixing a plurality of color materials used for the color filter 161 can be used. Even when the visible light attenuation filter 182 is formed, the infrared light attenuation filter 141 can be protected by the protective film 151. Since the visible light attenuation filter 182 has a single layer configuration, the manufacturing process can be simplified as compared with the visible light attenuation filter 181 described in FIG.
- the imaging device 1 can protect the infrared light attenuation filter 141 when the single-layer visible light attenuation filter 182 is used.
- the technology according to the present disclosure can be applied to various products.
- the present technology may be realized as an imaging element mounted on an imaging device such as a camera.
- FIG. 13 is a block diagram illustrating a schematic configuration example of a camera that is an example of an imaging apparatus to which the present technology can be applied.
- the camera 1000 in FIG. 1 includes a lens 1001, an image sensor 1002, an imaging control unit 1003, a lens driving unit 1004, an image processing unit 1005, an operation input unit 1006, a frame memory 1007, a display unit 1008, And a recording unit 1009.
- the lens 1001 is a photographing lens of the camera 1000.
- the lens 1001 collects light from the subject and makes it incident on an image sensor 1002 described later to form an image of the subject.
- the imaging element 1002 is a semiconductor element that images light from the subject condensed by the lens 1001.
- the image sensor 1002 generates an analog image signal corresponding to the irradiated light, converts it into a digital image signal, and outputs it.
- the imaging control unit 1003 controls imaging in the imaging element 1002.
- the imaging control unit 1003 controls the imaging element 1002 by generating a control signal and outputting the control signal to the imaging element 1002.
- the imaging control unit 1003 can perform autofocus in the camera 1000 based on the image signal output from the imaging element 1002.
- the autofocus is a system that detects the focal position of the lens 1001 and automatically adjusts it.
- a method image plane phase difference autofocus
- an image plane phase difference is detected by a phase difference pixel arranged in the image sensor 1002 to detect a focal position
- a method (contrast autofocus) in which a position where the contrast of an image is the highest is detected as a focal position can be applied.
- the imaging control unit 1003 adjusts the position of the lens 1001 via the lens driving unit 1004 based on the detected focal position, and performs autofocus.
- the imaging control unit 1003 can be configured by, for example, a DSP (Digital Signal Processor) equipped with firmware.
- DSP Digital Signal Processor
- the lens driving unit 1004 drives the lens 1001 based on the control of the imaging control unit 1003.
- the lens driving unit 1004 can drive the lens 1001 by changing the position of the lens 1001 using a built-in motor.
- the image processing unit 1005 processes the image signal generated by the image sensor 1002. This processing includes, for example, demosaic that generates an image signal of insufficient color among image signals corresponding to red, green, and blue for each pixel, noise reduction that removes noise of the image signal, and encoding of the image signal. Applicable.
- the image processing unit 1005 can be configured by, for example, a microcomputer equipped with firmware.
- the operation input unit 1006 receives an operation input from the user of the camera 1000.
- the operation input unit 1006 for example, a push button or a touch panel can be used.
- the operation input received by the operation input unit 1006 is transmitted to the imaging control unit 1003 and the image processing unit 1005. Thereafter, processing according to the operation input, for example, processing such as imaging of a subject is started.
- the frame memory 1007 is a memory for storing frames that are image signals for one screen.
- the frame memory 1007 is controlled by the image processing unit 1005 and holds a frame in the course of image processing.
- the display unit 1008 displays the image processed by the image processing unit 1005.
- a liquid crystal panel can be used for the display unit 1008.
- the recording unit 1009 records the image processed by the image processing unit 1005.
- a memory card or a hard disk can be used.
- the camera to which the present invention can be applied has been described above.
- the present technology can be applied to the image sensor 1002 among the configurations described above.
- the image sensor 1 described in FIG. 1 can be applied to the image sensor 1002.
- the occurrence of color mixing can be reduced, and deterioration of the image quality of the image generated by the camera 1000 can be prevented.
- the camera to which the present invention can be applied has been described above.
- the present disclosure can be applied to the image sensor 1002 among the configurations described above.
- the image sensor 1 described in FIG. 1 can be applied to the image sensor 1002.
- the image sensor 1 By applying the image sensor 1 to the image sensor 1002, deterioration of the image quality of the image generated by the camera 1000 can be prevented.
- this technique can also take the following structures.
- a photoelectric conversion unit that performs photoelectric conversion according to incident light;
- An on-chip lens for condensing the incident light on the photoelectric conversion unit;
- a color filter that transmits infrared light and visible light of a predetermined wavelength among the collected incident light;
- An infrared light attenuation filter that transmits visible light and attenuates infrared light among the collected incident light;
- An imaging device comprising: a protective film that is disposed adjacent to the infrared light attenuation filter and protects the infrared light attenuation filter.
- the protective film is disposed adjacent to the color filter, The imaging device according to (1), wherein the infrared light attenuation filter attenuates infrared light transmitted through the color filter. (3) The imaging device according to (2), wherein the protective film protects the infrared light attenuation filter when the color filter is formed. (4) The imaging device according to (2) or (3), wherein the protective film is configured to have substantially the same refractive index as the color filter. (5) The protective film is disposed adjacent to the on-chip lens, The color filter is disposed adjacent to the infrared light attenuation filter, and transmits visible light having the predetermined wavelength among the incident light transmitted through the infrared light attenuation filter. ).
- the protective film protects the infrared light attenuation filter when the on-chip lens is formed.
- An infrared light transmission filter that transmits infrared light out of the collected incident light, an infrared light pixel including the photoelectric conversion unit and the on-chip lens;
- the protective film is further disposed on a surface adjacent to the infrared light pixel of the infrared light attenuation filter.
- the imaging device according to any one of (1) to (7), wherein the protective film is made of an organic material.
- the protective film is made of an inorganic material.
- the protective film is configured by laminating an organic material and an inorganic material.
- (11) forming a photoelectric conversion unit that performs photoelectric conversion according to incident light; Forming an on-chip lens for condensing the incident light on the photoelectric conversion unit; Forming a color filter that transmits infrared light and visible light of a predetermined wavelength among the collected incident light; and Forming an infrared light attenuation filter that transmits visible light and attenuates infrared light among the collected incident light; and Forming a protective film that is disposed adjacent to the infrared light attenuating filter and protects the infrared light attenuating filter.
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Abstract
Description
1.第1の実施の形態
2.第2の実施の形態
3.第3の実施の形態
4.第4の実施の形態
5.第5の実施の形態
6.カメラへの応用例
[撮像素子の構成]
図1は、本開示の実施の形態に係る撮像素子の構成例を示す図である。同図の撮像素子1は、画素アレイ部10と、垂直駆動部20と、カラム信号処理部30と、制御部40とを備える。
図2は、本開示の第1の実施の形態に係る画素の構成例を示す図である。同図は、画素アレイ部10に配置された画素100の構成を表す模式断面図である。なお、同図の画素アレイ部10には、赤外光画素200がさらに配置される。
図3は、本開示の実施の形態に係る保護膜の構成例を示す図である。同図は、赤外光減衰フィルタ14を加工する際およびカラーフィルタ161を形成する際の保護膜151の効果を説明する図である。同図におけるaは、絶縁膜155の上に赤外光減衰フィルタ141が形成された状態を表す。この赤外光減衰フィルタ141は、絶縁膜155の上に赤外光減衰フィルタ141の材料となる樹脂が塗布された後、加熱硬化させることにより形成される。この硬化の際に、同図におけるaに表した色材の凝集体142が形成される。
図4乃至6は、本開示の第1の実施の形態における撮像素子の製造方法を示す図である。図4乃至6を使用して、図2において説明した撮像素子1の製造工程を説明する。なお、保護膜151には、有機材料により構成された保護膜151を想定する。
上述の第1の実施の形態の撮像素子1は、保護膜151を赤外光減衰フィルタ141に隣接して配置していた。これに対し、本開示の第2の実施の形態の撮像素子1は、保護膜152をさらに備える点で、上述の第1の実施の形態と異なる。
図7は、本開示の第2の実施の形態に係る画素の構成例を示す図である。同図の画素100は、保護膜152をさらに備える点で、図2において説明した画素100と異なる。
図8および9は、本開示の第2の実施の形態における撮像素子の製造方法を示す図である。図8および9を使用して、図7において説明した撮像素子1の製造工程を説明する。なお、図8は、図4におけるcに続けて実行する工程である。なお、保護膜151には、無機材料により構成された保護膜151を想定する。
上述の第1の実施の形態の撮像素子1は、画素100の境界において連続して形成された赤外光減衰フィルタ141を使用していた。これに対し、本開示の第3の実施の形態の撮像素子1は、赤外光減衰フィルタ141を分離する分離壁を画素100の境界に配置する点で、上述の第1の実施の形態と異なる。
図10は、本開示の第3の実施の形態に係る画素の構成例を示す図である。同図の画素100は、分離壁132を備える点で、図2において説明した画素100と異なる。
上述の第1の実施の形態の撮像素子1は、半導体基板111に形成された絶縁膜155の表面に赤外光減衰フィルタ141およびカラーフィルタ161が順に積層されていた。これに対し、本開示の第4の実施の形態の撮像素子1は、赤外光減衰フィルタ141およびカラーフィルタ161を入れ替えて配置する点で、上述の第1の実施の形態と異なる。
図11は、本開示の第4の実施の形態に係る画素の構成例を示す図である。同図の画素100は、絶縁膜155の表面にカラーフィルタ161および赤外光減衰フィルタ141が順に配置される点で、図2において説明した画素100と異なる。
上述の第1の実施の形態の撮像素子1は、積層されたカラーフィルタを赤外光画素200の可視光減衰フィルタ181として使用していた。これに対し、本開示の第5の実施の形態の撮像素子1は、単層の可視光減衰フィルタを使用する点で、上述の第1の実施の形態と異なる。
図12は、本開示の第5の実施の形態に係る画素の構成例を示す図である。同図の画素100は、赤外光画素200の可視光減衰フィルタ181の代わりに可視光減衰フィルタ182を備える点で、図2において説明した画素100と異なる。
本開示に係る技術(本技術)は、様々な製品に応用することができる。例えば、本技術は、カメラ等の撮像装置に搭載される撮像素子として実現されてもよい。
(1)入射光に応じて光電変換を行う光電変換部と、
前記入射光を前記光電変換部に集光するオンチップレンズと、
前記集光された入射光のうち赤外光および所定の波長の可視光を透過するカラーフィルタと、
前記集光された入射光のうち可視光を透過するとともに赤外光を減衰する赤外光減衰フィルタと、
前記赤外光減衰フィルタに隣接して配置されて前記赤外光減衰フィルタを保護する保護膜と
を具備する撮像素子。
(2)前記保護膜は、前記カラーフィルタに隣接して配置され、
前記赤外光減衰フィルタは、前記カラーフィルタを透過した赤外光を減衰する
前記(1)に記載の撮像素子。
(3)前記保護膜は、前記カラーフィルタの形成の際に前記赤外光減衰フィルタを保護する前記(2)に記載の撮像素子。
(4)前記保護膜は、前記カラーフィルタと略同じ屈折率に構成される前記(2)または(3)に記載の撮像素子。
(5)前記保護膜は、前記オンチップレンズに隣接して配置され、
前記カラーフィルタは、前記赤外光減衰フィルタに隣接して配置されて、前記赤外光減衰フィルタを透過した前記入射光のうち前記所定の波長の可視光を透過する
前記(1)から(4)の何れかに記載の撮像素子。
(6)前記保護膜は、前記オンチップレンズの形成の際に前記赤外光減衰フィルタを保護する前記(5)に記載の撮像素子。
(7)前記光電変換部、前記オンチップレンズ、前記カラーフィルタ、前記赤外光減衰フィルタおよび前記保護膜を備える画素と、
前記集光された入射光のうち赤外光を透過する赤外光透過フィルタ、前記光電変換部および前記オンチップレンズを備える赤外光画素と
を具備し、
前記保護膜は、前記赤外光減衰フィルタの前記赤外光画素に隣接する面にさらに配置される
前記(1)から(6)の何れかに記載の撮像素子。
(8)前記保護膜は、有機材料により構成される前記(1)から(7)の何れかに記載の撮像素子。
(9)前記保護膜は、無機材料により構成される前記(1)から(7)の何れかに記載の撮像素子。
(10)前記保護膜は、有機材料および無機材料が積層されて構成される前記(1)から(7)の何れかに記載の撮像素子。
(11)入射光に応じて光電変換を行う光電変換部を形成する工程と、
前記入射光を前記光電変換部に集光するオンチップレンズを形成する工程と、
前記集光された入射光のうち赤外光および所定の波長の可視光を透過するカラーフィルタを形成する工程と、
前記集光された入射光のうち可視光を透過するとともに赤外光を減衰する赤外光減衰フィルタを形成する工程と、
前記赤外光減衰フィルタに隣接して配置されて前記赤外光減衰フィルタを保護する保護膜を形成する工程と
を具備する撮像素子の製造方法。
10 画素アレイ部
100 画素
101 光電変換部
141 赤外光減衰フィルタ
151、152 保護膜
161 カラーフィルタ
171 オンチップレンズ
181、182 可視光減衰フィルタ
200 赤外光画素
1002 撮像素子
Claims (11)
- 入射光に応じて光電変換を行う光電変換部と、
前記入射光を前記光電変換部に集光するオンチップレンズと、
前記集光された入射光のうち赤外光および所定の波長の可視光を透過するカラーフィルタと、
前記集光された入射光のうち可視光を透過するとともに赤外光を減衰する赤外光減衰フィルタと、
前記赤外光減衰フィルタに隣接して配置されて前記赤外光減衰フィルタを保護する保護膜と
を具備する撮像素子。 - 前記保護膜は、前記カラーフィルタに隣接して配置され、
前記赤外光減衰フィルタは、前記カラーフィルタを透過した赤外光を減衰する
請求項1記載の撮像素子。 - 前記保護膜は、前記カラーフィルタの形成の際に前記赤外光減衰フィルタを保護する請求項2記載の撮像素子。
- 前記保護膜は、前記カラーフィルタと略同じ屈折率に構成される請求項2記載の撮像素子。
- 前記保護膜は、前記オンチップレンズに隣接して配置され、
前記カラーフィルタは、前記赤外光減衰フィルタに隣接して配置されて、前記赤外光減衰フィルタを透過した前記入射光のうち前記所定の波長の可視光を透過する
請求項1記載の撮像素子。 - 前記保護膜は、前記オンチップレンズの形成の際に前記赤外光減衰フィルタを保護する請求項5記載の撮像素子。
- 前記光電変換部、前記オンチップレンズ、前記カラーフィルタ、前記赤外光減衰フィルタおよび前記保護膜を備える画素と、
前記集光された入射光のうち赤外光を透過する赤外光透過フィルタ、前記光電変換部および前記オンチップレンズを備える赤外光画素と
を具備し、
前記保護膜は、前記赤外光減衰フィルタの前記赤外光画素に隣接する面にさらに配置される
請求項1記載の撮像素子。 - 前記保護膜は、有機材料により構成される請求項1記載の撮像素子。
- 前記保護膜は、無機材料により構成される請求項1記載の撮像素子。
- 前記保護膜は、有機材料および無機材料が積層されて構成される請求項1記載の撮像素子。
- 入射光に応じて光電変換を行う光電変換部を形成する工程と、
前記入射光を前記光電変換部に集光するオンチップレンズを形成する工程と、
前記集光された入射光のうち赤外光および所定の波長の可視光を透過するカラーフィルタを形成する工程と、 前記集光された入射光のうち可視光を透過するとともに赤外光を減衰する赤外光減衰フィルタを形成する工程と、
前記赤外光減衰フィルタに隣接して配置されて前記赤外光減衰フィルタを保護する保護膜を形成する工程と
を具備する撮像素子の製造方法。
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| KR1020207027750A KR102776684B1 (ko) | 2018-04-11 | 2019-01-17 | 촬상 소자 및 촬상 소자의 제조 방법 |
| KR1020257006074A KR20250035016A (ko) | 2018-04-11 | 2019-01-17 | 촬상 소자 및 촬상 소자의 제조 방법 |
| US17/044,994 US12015037B2 (en) | 2018-04-11 | 2019-01-17 | Imaging device and method of manufacturing imaging device |
| CN201980024326.9A CN111937152A (zh) | 2018-04-11 | 2019-01-17 | 摄像器件和摄像器件的制造方法 |
| JP2020513071A JP7227226B2 (ja) | 2018-04-11 | 2019-01-17 | 撮像素子および撮像素子の製造方法 |
| CN202311459922.4A CN117438442A (zh) | 2018-04-11 | 2019-01-17 | 摄像器件 |
| EP19784705.6A EP3780103A4 (en) | 2018-04-11 | 2019-01-17 | IMAGING DEVICE AND METHOD OF MANUFACTURING THE IMAGING DEVICE |
| US18/378,507 US20240038789A1 (en) | 2018-04-11 | 2023-10-10 | Imaging device and method of manufacturing imaging device |
| US18/630,684 US20240258343A1 (en) | 2018-04-11 | 2024-04-09 | Imaging device and method of manufacturing imaging device |
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| US18/378,507 Continuation US20240038789A1 (en) | 2018-04-11 | 2023-10-10 | Imaging device and method of manufacturing imaging device |
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| CN113099091A (zh) * | 2021-04-08 | 2021-07-09 | 天津天地伟业智能安全防范科技有限公司 | 一种卡口摄像装置、方法、电子设备及存储介质 |
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| JP7374635B2 (ja) * | 2019-07-12 | 2023-11-07 | キヤノン株式会社 | 発光装置 |
| US12557517B2 (en) * | 2020-09-10 | 2026-02-17 | Sony Semiconductor Solutions Corporation | Display device and electronic device |
| TWI811854B (zh) * | 2021-07-23 | 2023-08-11 | 友達光電股份有限公司 | 光學感測裝置 |
| US12707776B2 (en) * | 2022-06-07 | 2026-08-11 | Samsung Display Co., Ltd. | Display apparatus having low specular reflection and improved contrast ratio |
| CN116647737B (zh) * | 2023-07-21 | 2023-10-31 | 立臻科技(昆山)有限公司 | 一种彩色成像组件及其图像处理方法 |
| WO2026054284A1 (ko) * | 2024-09-03 | 2026-03-12 | 삼성전자 주식회사 | 이미지 센서, 카메라 모듈 및 그를 포함하는 전자 장치 |
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- 2019-01-17 CN CN201980024326.9A patent/CN111937152A/zh active Pending
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| US20240038789A1 (en) | 2024-02-01 |
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| US20210151484A1 (en) | 2021-05-20 |
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| US12015037B2 (en) | 2024-06-18 |
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