Solid-state image sensor

Abstract

A solid-state image sensor is provided, having a first region and a second region adjacent to the first region along a first direction. The solid-state image sensor includes a first unit pattern disposed in the first region. The solid-state image sensor also includes a second unit pattern disposed in the second region and corresponding to the first unit pattern. Each of the first unit pattern and the second unit pattern includes a plurality of regular pixels and an autofocus pixel array. The regular pixels and the autofocus pixel array form a first arrangement in the first unit pattern, the regular pixels and the autofocus pixel array form a second arrangement in the second unit pattern, and the first arrangement and the second arrangement are symmetrical to each other along a first symmetry axis.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an image sensor, and particularly, to a solid-state image sensor with a symmetric pattern design. BACKGROUND

[0002] Solid-state image sensors (e.g., charge-coupled device (CCD) image sensors, complementary metal-oxide semiconductor (CMOS) image sensors, etc.) have been widely used in various image capturing devices, such as digital still image cameras, digital video cameras, and similar devices. Signal charges can be generated according to the amount of light received in the light sensing portions (e.g., photoelectric conversion elements) of the solid-state image sensors. In addition, the signal charges generated in the light sensing portions can be transferred and amplified, and thus image signals can be obtained.

[0003] Generally, a repeated Bayer pattern is often used in conventional solid-state image sensors. However, when there are phase detection auto focus (PDAF) pixels in each pattern, the patterns on the opposite sides (e.g., left and right sides or top and bottom sides) need to use different and complex image signal processing (ISP) (signal compensation) because the pixels closest to the light source in each unit pattern have different energy from other pixels. SUMMARY

[0004] According to some embodiments of the present disclosure, a solid-state image sensor has a symmetric pattern design, which can effectively simplify image signal processing (ISP) (signal compensation).

[0005] According to some embodiments of the present disclosure, a solid-state image sensor is provided, which has a first region and a second region adjacent to the first region along a first direction. The solid-state image sensor includes a first unit pattern disposed in the first region. The solid-state image sensor also includes a second unit pattern disposed in the second region and corresponding to the first unit pattern. Each of the first unit pattern and the second unit pattern includes a plurality of normal pixels and an array of auto focus pixels. The normal pixels and the array of auto focus pixels form a first arrangement in the first unit pattern, the normal pixels and the array of auto focus pixels form a second arrangement in the second unit pattern, and the first arrangement and the second arrangement are symmetric to each other along a first symmetry axis.

[0006] In some embodiments, the normal pixels receive at least two different colors.

[0007] In some embodiments, the solid-state image sensor has a third region adjacent to the first region along a second direction, the second direction being perpendicular to the first direction, and the solid-state image sensor further includes a third unit pattern disposed in the third region and corresponding to the first unit pattern. The third unit pattern includes the regular pixels and the array of autofocus pixels, the regular pixels and the array of autofocus pixels forming a third arrangement in the third unit pattern, and the first arrangement and the third arrangement are symmetrical to each other along a second symmetry axis, the second symmetry axis being perpendicular to the first symmetry axis.

[0008] In some embodiments, the solid-state image sensor has a fourth region adjacent to the second region along a second direction, and the solid-state image sensor further includes a fourth unit pattern disposed in the fourth region and corresponding to the second unit pattern. The fourth unit pattern includes the regular pixels and the array of autofocus pixels, the regular pixels and the array of autofocus pixels forming a fourth arrangement in the fourth unit pattern, and the second arrangement and the fourth arrangement are symmetrical to each other along a second symmetry axis.

[0009] In some embodiments, each of the first unit pattern, the second unit pattern, the third unit pattern, and the fourth unit pattern is (2n) 2 a pixel array, n being a positive integer greater than or equal to 2.

[0010] In some embodiments, the solid-state image sensor further includes a first interposed pixel array disposed between the first unit pattern and the second unit pattern. The first interposed pixel array overlaps the first symmetry axis.

[0011] In some embodiments, the first interposed pixel array is also disposed between the third unit pattern and the fourth unit pattern.

[0012] In some embodiments, the number of rows in the first interposed pixel array is n.

[0013] In some embodiments, the first interposed pixel array exhibits a color corresponding to a color exhibited in the first row of the first unit pattern and the third unit pattern.

[0014] In some embodiments, the solid-state image sensor further includes a second interposed pixel array disposed between the first unit pattern and the third unit pattern. The second interposed pixel array overlaps the second symmetry axis.

[0015] In some embodiments, the second interposed pixel array is also disposed between the second unit pattern and the fourth unit pattern.

[0016] In some embodiments, the number of columns in the second interposed pixel array is n.

[0017] In some embodiments, the second array of interstitial pixels exhibits a color corresponding to the color exhibited in the first column of the first unit pattern and the second unit pattern.

[0018] In some embodiments, the array of autofocus pixels is a p x q array of pixels, p and q being positive integers greater than or equal to 2n.

[0019] In some embodiments, each of the first unit pattern, the second unit pattern, the third unit pattern, and the fourth unit pattern has more than one array of autofocus pixels.

[0020] In some embodiments, the regular pixel includes a plurality of first color pixels disposed in at least one n 2 pixel array, and a plurality of second color pixels disposed in at least one n 2 pixel array.

[0021] In some embodiments, the first unit pattern and the second unit pattern are located on opposite sides of the light source.

[0022] In some embodiments, the regular pixel includes a red filter, a green filter, a blue filter, a yellow filter, a white filter, a cyan filter, a magenta filter, or an infrared / near-infrared filter. BRIEF DESCRIPTION OF DRAWINGS

[0023] Embodiments of the present disclosure will be described below with reference to the accompanying drawings. Note that various components are not drawn to scale and are merely intended to illustrate examples. In fact, the sizes of the components can be exaggerated or reduced in order to clearly show technical features of embodiments of the present disclosure.

[0024] FIG. 1 is a partial top view of a solid-state image sensor according to some embodiments of the present disclosure.

[0025] FIG. 2 is a partial top view of a solid-state image sensor according to some other embodiments of the present disclosure.

[0026] FIGS. 3A-3H is a different example of a first unit pattern.

[0027] FIG. 4 is a partial top view of a solid-state image sensor according to some embodiments of the present disclosure.

[0028] FIG. 5 is a partial top view of a solid-state image sensor according to some other embodiments of the present disclosure.

[0029] FIGS. 6A-6H is a different example of a first unit pattern.

[0030] FIG. 7 is a partial top view of a solid-state image sensor according to some embodiments of the present disclosure.

[0031] FIG. 8 is a partial top view of a solid-state image sensor according to some other embodiments of the present disclosure.

[0032] FIGS. 9A-9H is a different example of a first unit pattern.

[0033] In which the reference numerals are explained as follows:

[0034] 100, 102, 104, 106, 108, 110: solid-state image sensor

[0035] B, G, R: pixel

[0036] I1: first interposed pixel array

[0037] I2: second interposed pixel array

[0038] L: light

[0039] PDAF, PDAF1, PDAF2, PDAF3: auto focus pixel array

[0040] R1: first region

[0041] R2: second region

[0042] R3: third region

[0043] R4: fourth region

[0044] S1: first axis of symmetry

[0045] S2: second axis of symmetry

[0046] U1: first unit pattern

[0047] U2: second unit pattern

[0048] U3: third unit pattern

[0049] U4: fourth unit pattern

[0050] X, Y: coordinate axis DETAILED DESCRIPTION

[0051] The following disclosure provides many different embodiments, or examples, to implement different features of the application. Some examples described herein will focus on specific examples of components and arrangements of components, in order to facilitate understanding. Of course, these specific examples are not meant to limit the application. For example, if the disclosure describes a first feature component as being formed on or over a second feature component, this is intended to include embodiments in which the first and second feature components are in direct contact, as well as embodiments in which additional feature components are formed between the first and second feature components such that the first and second feature components can not be in direct contact.

[0052] Furthermore, where spatially relative terms are used, such as "beneath", "below", "lower", "above", "upper", and the like, they are used for ease of describing the aspects of figures only and to illustrate the orientation of one (or more) element(s) to another (or more) element(s) only and are in no way meant to be limiting. The spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors will be interpreted accordingly.

[0053] In the present disclosure, the terms "about", "approximately", "substantially" generally mean within 20% of a given value or range, or within 10% of a given value or range, or within 5% of a given value or range, or within 3% of a given value or range, or within 2% of a given value or range, or within 1% of a given value or range, or within 0.5% of a given value or range. A given value of the present disclosure is an approximate amount. That is, in the absence of a specific indication to the contrary, a given value includes the meaning of "about", "approximately", "substantially".

[0054] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an overly idealized or formal sense unless expressly so defined herein.

[0055] The different embodiments disclosed below can make use of the same reference signs and / or labels. These repetitions are for the purpose of simplification and clarity and are not meant to imply a specific relationship between the different embodiments and / or structures discussed.

[0056] FIG. 1 is a partial top view of a solid-state image sensor 100 according to some embodiments of the present disclosure. More specifically, FIG. 1 A pixel arrangement of the solid-state image sensor 100 is illustrated.

[0057] Referring to FIG. 1 In some embodiments, the solid-state image sensor 100 has (or is divided into) a first region R1 and a second region R2 adjacent to the first region R1 along an X direction. In addition, as shown in FIG. 1 some embodiments, the solid-state image sensor 100 also has (or is further divided into) a third region R3 adjacent to the first region R1 along a Y direction perpendicular to the X direction and a fourth region R4 adjacent to the second region R2 along the Y direction.

[0058] Referring to FIG. 1 In some embodiments, the solid-state image sensor 100 includes a first unit pattern U1 disposed in the first region R1. For example, there are four first unit patterns U1 in the first region R1, but embodiments of the present disclosure are not limited thereto. It should be noted that the number of the first unit patterns U1 in the first region R1 can be changed according to actual needs.

[0059] Referring to FIG. 1 In some embodiments, the solid-state image sensor 100 includes a second unit pattern U2 disposed in the second region R2 and corresponding to the first unit pattern U1. That is, there are four second unit patterns U2 in the second region R2, but embodiments of the present disclosure are not limited thereto. It should be noted that the number of the first unit patterns U1 in the first region R1 is the same as the number of the second unit patterns U2 in the second region R2.

[0060] Referring to FIG. 1 In some embodiments, each of the first unit patterns U1 and each of the second unit patterns U2 includes a plurality of regular pixels (e.g., a pixel R, a pixel G, or a pixel B) and an autofocus pixel array PDAF. In some embodiments, the regular pixels receive at least two different colors. That is, the regular pixels can include at least two different filters. In other words, the regular pixels include at least two different color pixels, which can be disposed adjacent to each other.

[0061] In some embodiments, the regular pixels include a red filter such that the pixel R receives red light; the regular pixels also include a green filter such that the pixel R receives green light; and the regular pixels further include a blue filter such that the pixel B receives blue light. In some other embodiments, the regular pixels include a yellow filter, a white filter, a cyan filter, a magenta filter, or an infrared / near-infrared (IR / NIR) filter.

[0062] Referring to FIG. 1In some embodiments, regular pixels (e.g., pixels R, G, or B) and the autofocus pixel array PDAF form a first arrangement in the first unit pattern U1, and regular pixels (e.g., pixels R, G, or B) and the autofocus pixel array PDAF form a second arrangement in the second unit pattern U2, and the first arrangement and the second arrangement are symmetrical to each other along the first axis of symmetry S1.

[0063] For example, such as FIG. 1 As shown, each first unit pattern U1 is a 4×4 pixel array, and each second unit pattern U1 is a 4×4 pixel array. Pixels G, G, B, and B are arranged sequentially from top to bottom in the first row of the first unit pattern U1 and the fourth row of the corresponding second unit pattern U2. Pixels R, R, G, and G are arranged sequentially from top to bottom in the fourth row of the first unit pattern U1 and the first row of the corresponding second unit pattern U2. Furthermore, pixels G, G, R, and R are arranged sequentially from left to right in the first column of the first unit pattern U1, while pixels R, R, G, and G are arranged sequentially from left to right in the first column of the corresponding second unit pattern U2. Pixels B, B, G, and G are arranged sequentially from left to right in the fourth column of the first unit pattern U1, while pixels G, G, B, and B are arranged sequentially from left to right in the fourth column of the corresponding second unit pattern U2. Furthermore, the PDAF (PDental autofocus) pixel array is a 2×2 pixel array and is located at the center of the first unit pattern U1 and the center of the second unit pattern U2. However, the embodiments disclosed herein are not limited thereto.

[0064] like FIG. 1 As shown, in some embodiments, the solid-state image sensor 100 also includes a third unit pattern U3, which is disposed in a third region R3 and corresponds to the first unit pattern U1. That is, there are four third unit patterns U3 in the third region R3, but this disclosure is not limited thereto. It should be noted that the number of first unit patterns U1 in the first region R1 is the same as the number of third unit patterns U3 in the third region R3. Similarly, each third unit pattern U3 includes multiple regular pixels (e.g., pixel R, pixel G, or pixel B) and an autofocus pixel array PDAF.

[0065] like FIG. 1 As shown, in some embodiments, regular pixels (e.g., pixel R, pixel G, or pixel B) and the autofocus pixel array PDAF form a third arrangement in the third unit pattern U3, and the first arrangement and the third arrangement are symmetrical to each other along the second axis of symmetry S2, which is perpendicular to the first axis of symmetry S1.

[0066] For example, such as FIG. 1As shown, each third unit pattern U3 is a 4×4 pixel array. Pixels G, G, B, and B are arranged sequentially from top to bottom in the first row of the first unit pattern U1, while pixels B, B, G, and G are arranged sequentially from top to bottom in the first row of the corresponding third unit pattern U3. Pixels R, R, G, and G are arranged sequentially from top to bottom in the fourth row of the first unit pattern U1, while pixels G, G, R, and R are arranged sequentially from top to bottom in the fourth row of the corresponding third unit pattern U3. Furthermore, pixels G, G, R, and R are arranged sequentially from left to right in the first column of the first unit pattern U1 and the fourth column of the corresponding third unit pattern U3, while pixels B, B, G, and G are arranged sequentially from left to right in the fourth column of the first unit pattern U1 and the first column of the corresponding third unit pattern U3. Similarly, the autofocus pixel array PDAF is a 2×2 pixel array and is positioned at the center of the third unit pattern U3. However, the embodiments disclosed herein are not limited thereto.

[0067] like FIG. 1 As shown, in some embodiments, the solid-state image sensor 100 also includes a fourth unit pattern U4, which is disposed in a fourth region R4 and corresponds to the second unit pattern U2. That is, there are four fourth unit patterns U4 in the fourth region R4, but this disclosure is not limited thereto. It should be noted that the number of second unit patterns U2 in the second region R2 is the same as the number of fourth unit patterns U4 in the fourth region R4. Similarly, each fourth unit pattern U4 includes multiple regular pixels (e.g., pixel R, pixel G, or pixel B) and an autofocus pixel array PDAF.

[0068] like FIG. 1 As shown, in some embodiments, regular pixels (e.g., pixels R, G, or B) and the autofocus pixel array PDAF form a fourth arrangement in the fourth unit pattern U4, and the second arrangement and the fourth arrangement are symmetrical to each other along the second axis of symmetry S2. Alternatively, the third arrangement and the fourth arrangement are symmetrical to each other along the first axis of symmetry S1.

[0069] For example, such as FIG. 1As shown, each fourth unit pattern U4 is a 4×4 pixel array. Pixels R, R, G, and G are arranged sequentially from top to bottom in the first row of the second unit pattern U2, while pixels G, G, R, and R are arranged sequentially from top to bottom in the first row of their respective fourth unit pattern U4. Similarly, pixels G, G, B, and B are arranged sequentially from top to bottom in the fourth row of the second unit pattern U2, while pixels B, B, G, and G are arranged sequentially from top to bottom in the fourth row of their respective fourth unit pattern U4. Furthermore, pixels R, R, G, and G are arranged sequentially from left to right in the first column of the second unit pattern U2 and the fourth column of their respective fourth unit pattern U4, while pixels G, G, B, and B are arranged sequentially from left to right in the fourth column of the second unit pattern U2 and the first column of their respective fourth unit pattern U4. Likewise, the autofocus pixel array PDAF is a 2×2 pixel array and is positioned at the center of the fourth unit pattern U4. However, the embodiments disclosed herein are not limited thereto.

[0070] More specifically, the light source (not shown) can be positioned at the center of the solid-state image sensor 100 and emit light such as... FIG. 1 The light L shown is illustrated. In this embodiment, the first unit pattern U1 and the third unit pattern U3 are substantially disposed on the left side of the solid-state image sensor 100 (or light source), while the second unit pattern U2 and the fourth unit pattern U4 are substantially disposed on the right side of the solid-state image sensor 100 (or light source). On the other hand, the first unit pattern U1 and the second unit pattern U2 are substantially disposed on the upper side of the solid-state image sensor 100 (or light source), while the third unit pattern U3 and the fourth unit pattern U4 are substantially disposed on the lower side of the solid-state image sensor 100 (or light source). Since the solid-state image sensor 100 has the aforementioned symmetrical pattern design, the patterns located on opposite sides (e.g., left and right sides or top and bottom sides) do not need to employ different and complex image signal processing (ISP) (signal compensation), which effectively simplifies image signal processing (ISP) (signal compensation).

[0071] like FIG. 2 As shown, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) is a 4×4 pixel array, while the PDAF autofocus pixel array is a 2×2 pixel array, but this disclosure is not limited thereto. In some embodiments, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) is (2n). 2 A pixel array, where n is a positive integer greater than or equal to 2. In some embodiments, the autofocus pixel array PDAF is a p×q pixel array, where p and q are positive integers greater than or equal to 2n.

[0072] Further, as shown in FIG. 2 each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4), the pixels R are arranged in one 2x2 pixel array, the pixels G are arranged in two 2x2 pixel arrays, and the pixels B are arranged in one 2x2 pixel array. That is, in some embodiments, the color pixels are arranged in at least one n 2 pixel array, n is a positive integer greater than or equal to 2.

[0073] FIG. 1 is a partial top view of a solid-state image sensor 102 according to some other embodiments of the present disclosure. More specifically, FIG. 2 a pixel arrangement of the solid-state image sensor 102 is illustrated.

[0074] The solid-state image sensor 102 has a structure similar to that of the solid-state image sensor 100 as shown in FIG. 2 That is, the solid-state image sensor 102 has (or is divided into) a first region R1, a second region R2 adjacent to the first region R1 along an X direction, a third region R3 adjacent to the first region R1 along a Y direction perpendicular to the X direction, and a fourth region R4 adjacent to the second region R2 along the Y direction.

[0075] Further, the solid-state image sensor 102 includes a first unit pattern U1, a second unit pattern U2, a third unit pattern U3, and a fourth unit pattern U4, the first unit pattern U1 is arranged in the first region R1, the second unit pattern U2 is arranged in the second region R2 and corresponds to the first unit pattern U1, the third unit pattern U3 is arranged in the third region R3 and corresponds to the first unit pattern U1, and the fourth unit pattern U4 is arranged in the fourth region R4 and corresponds to the second unit pattern U2.

[0076] As shown in FIG. 2 the regular pixels (e.g., the pixels R, the pixels G, or the pixels B) and the autofocus pixel array PDAF form a first arrangement in the first unit pattern U1, the regular pixels (e.g., the pixels R, the pixels G, or the pixels B) and the autofocus pixel array PDAF form a second arrangement in the second unit pattern U2, the regular pixels (e.g., the pixels R, the pixels G, or the pixels B) and the autofocus pixel array PDAF form a third arrangement in the third unit pattern U3, and the regular pixels (e.g., the pixels R, the pixels G, or the pixels B) and the autofocus pixel array PDAF form a fourth arrangement in the fourth unit pattern U4. In some embodiments, the first arrangement and the second arrangement are symmetrical to each other along a first symmetry axis S1, the first arrangement and the third arrangement are symmetrical to each other along a second symmetry axis S2, the second arrangement and the fourth arrangement are symmetrical to each other along the second symmetry axis S2 (or, the third arrangement and the fourth arrangement are symmetrical to each other along the first symmetry axis S1).

[0077] Referring to FIG. 2 In some embodiments, the solid-state image sensor 102 includes a first interposed pixel array I1 disposed between the first unit pattern U1 and the second unit pattern U2. As FIG. 2 shown, in some embodiments, the first interposed pixel array I1 is also disposed between the third unit pattern U3 and the fourth unit pattern U4. Further, in some embodiments, the first interposed pixel array I1 overlaps the first axis of symmetry S1 as FIG. 2 shown.

[0078] In some embodiments, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) is a (2n) 2 pixel array, n is a positive integer greater than or equal to 2, and the number of columns in the first interposed pixel array I1 is n. For example, as FIG. 2 shown, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) can be a 4x4 pixel array, and the number of columns in the first interposed pixel array I1 can be two, although embodiments of the present disclosure are not limited thereto.

[0079] As FIG. 2 shown, in some embodiments, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the first row of the first unit pattern U1 and the third unit pattern U3. In other words, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the last row (the fourth row in the embodiment shown) of the second unit pattern U2 and the fourth unit pattern U4. FIG. 2

[0080] Referring to FIG. 2 In some embodiments, the solid-state image sensor 102 also includes a second interposed pixel array I2 disposed between the first unit pattern U1 and the third unit pattern U3. As FIG. 2 shown, in some embodiments, the second interposed pixel array I2 is also disposed between the second unit pattern U2 and the fourth unit pattern U4. Further, in some embodiments, the second interposed pixel array I2 overlaps the second axis of symmetry S2 as FIG. 2 shown.

[0081] In some embodiments, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) is a (2n) 2 ​the number of columns in the second inserted pixel array I2 is n. For example, as shown in FIG. 2 each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) can be a 4x4 pixel array, and the number of columns in the second inserted pixel array I2 can be two, but embodiments of the present disclosure are not limited thereto.

[0082] As shown in FIG. 3A-3H in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first columns of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the last columns (the fourth columns in the embodiments shown in FIG. 3A-3H ).

[0083] In FIG. 1 the embodiments shown in, the first inserted pixel array I1 disposed between the first unit pattern U1 and the second unit pattern U2 (or the third unit pattern U3 and the fourth unit pattern U4) and the second inserted pixel array I2 disposed between the first unit pattern U1 and the third unit pattern U3 (or the second unit pattern U2 and the fourth unit pattern U4) can further improve the resolution drop in the solid-state image sensor 102.

[0084] In the foregoing embodiments, the autofocus pixel array PDAF is a 2x2 pixel array and is disposed at the center of each unit pattern, but embodiments of the present disclosure are not limited thereto.

[0085] FIG. 2 different examples of the first unit pattern U1. FIGS. 3A-3H each first unit pattern U1 shown in FIG. 3A or FIG. 3B , but embodiments of the present disclosure are not limited thereto.

[0086] It should be noted that the second unit pattern U2, the third unit pattern U3, and the fourth unit pattern U4 are adjusted according to the first unit pattern U1. That is, the arrangement of the regular pixels (e.g., the pixel R, the pixel G, or the pixel B) and the autofocus pixel array PDAF in the second unit pattern U2, the third unit pattern U3, and the fourth unit pattern U4 can be changed according to the arrangement of the regular pixels (e.g., the pixel R, the pixel G, or the pixel B) and the autofocus pixel array PDAF in the first unit pattern U1. Furthermore, FIG. 3C different examples of the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4.

[0087] like FIG. 3D and FIG. 3E As shown, the PDAF (Positive Focusing Pixel Array) is a 2×2 pixel array, but the PDAF is not positioned at the center of the first unit pattern U1. FIG. 3F and FIG. 3G As shown, each first unit pattern U1 has two autofocus pixel arrays (i.e., autofocus pixel array PDAF1 and autofocus pixel array PDAF2). For example, autofocus pixel array PDAF1 and autofocus pixel array PDAF2 are 2×1 pixel arrays (or 1×2 pixel arrays) that are adjacent to each other or separated from each other.

[0088] like FIG. 3H , FIG. 4 , FIG. 4 and FIG. 1 As shown, the autofocus pixel array PDAF is a 2×1 pixel array (or a 1×2 pixel array), which is set at different positions in the first unit pattern U1. It should be noted that the number of rows and columns in each autofocus pixel array (PDAF, PDAF1 or PDAF2), and the number of autofocus pixel arrays in a first unit pattern U1 are not limited to the aforementioned example, and can be adjusted according to actual needs.

[0089] FIG. 4 This is a partial top view of a solid-state image sensor 104 illustrated according to some embodiments of the present disclosure. More specifically, FIG. 4 The pixel arrangement of the solid-state image sensor 104 is illustrated.

[0090] The solid-state image sensor 104 has a similar FIG. 5 The structure of the solid-state image sensor 100 shown is illustrated. FIG. 5 As shown, each unit pattern of the solid-state image sensor 104 (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) is a 6×6 pixel array, while the autofocus pixel array PDAF is a 2×2 pixel array, but the embodiments disclosed herein are not limited thereto.

[0091] In addition, such as FIG. 4 As shown, in each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4), pixel R is disposed in a 3×3 pixel array, pixel G is disposed in two 3×3 pixel arrays, and pixel B is disposed in a 3×3 pixel array, but the embodiments disclosed herein are not limited thereto.

[0092] FIG. 5This is a partial top view of a solid-state image sensor 106 illustrated according to some other embodiments of the present disclosure. More specifically, FIG. 5 The pixel arrangement of the solid-state image sensor 106 is shown.

[0093] The solid-state image sensor 106 has a similar FIG. 5 The structure of the solid-state image sensor 104 is shown. (Refer to...) FIG. 5 In some embodiments, the solid-state image sensor 106 includes a first inserted pixel array I1 disposed between a first unit pattern U1 and a second unit pattern U2. For example... FIG. 5 As shown, in some embodiments, the first inserted pixel array I1 is also disposed between the third unit pattern U3 and the fourth unit pattern U4. Furthermore, in some embodiments, the first inserted pixel array I1 is as follows: FIG. 5 As shown, it overlaps with the first axis of symmetry S1.

[0094] like FIG. 5 As shown, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) can be a 6×6 pixel array, and the number of rows in the first inserted pixel array I1 can be three, but the embodiments disclosed herein are not limited thereto.

[0095] like FIG. 5 As shown, in some embodiments, the first inserted pixel array I1 presents a color corresponding to the color presented in the first row of the first unit pattern U1 and the third unit pattern U3. In other words, the first inserted pixel array I1 presents a color corresponding to the color presented in the last row of the second unit pattern U2 and the fourth unit pattern U4. FIG. 5 The color shown in the sixth row of the illustrated embodiment corresponds to the color.

[0096] Reference FIG. 5 In some embodiments, the solid-state image sensor 106 also includes a second inserted pixel array I2, which is disposed between the first unit pattern U1 and the third unit pattern U3. For example... FIG. 5 As shown, in some embodiments, the second inserted pixel array I2 is also disposed between the second unit pattern U2 and the fourth unit pattern U4. Furthermore, in some embodiments, the second inserted pixel array I2 is as follows: FIG. 5 As shown, it overlaps with the second axis of symmetry S2.

[0097] like FIG. 6A-6H As shown, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) can be a 6×6 pixel array, and the number of columns in the second inserted pixel array I2 can be three, but the embodiments disclosed herein are not limited thereto.

[0098] As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6A-6H As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 4 As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4.

[0099] FIG. 5 As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIGS. 6A-6H As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6A As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6B As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4.

[0100] As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6C As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4.

[0101] As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6D As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6E As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6F As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6G As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4.

[0102] As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 6H As shown in FIG. 1, in some embodiments, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second inserted pixel array I2 presents colors corresponding to the colors presented in the first column of the third unit pattern U3 and the fourth unit pattern U4. FIG. 7As shown, the PDAF autofocus pixel array is a 1×3 pixel array (or a 3×1 pixel array), and it is not located at the center of the first unit pattern U1. FIG. 7 and FIG. 1 As shown, the autofocus pixel array PDAF is a 2×3 pixel array (or a 3×2 pixel array), and it is not located at the center of the first unit pattern U1. It should be noted that the number of rows and columns in each autofocus pixel array (PDAF, PDAF1, PDAF2 or PDAF3), and the number of autofocus pixel arrays in a first unit pattern U1 are not limited to the aforementioned example, and can be adjusted according to actual needs.

[0103] FIG. 7 This is a partial top view of a solid-state image sensor 108 illustrated according to some embodiments of the present disclosure. More specifically, FIG. 7 The pixel arrangement of the solid-state image sensor 108 is shown.

[0104] The solid-state image sensor 108 has a similar FIG. 8 The structure of the solid-state image sensor 100 shown is illustrated. FIG. 8 As shown, each unit pattern of the solid-state image sensor 108 (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) is an 8×8 pixel array, while the autofocus pixel array PDAF is a 2×2 pixel array, but the embodiments disclosed herein are not limited thereto.

[0105] In addition, such as FIG. 7 As shown, in each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4), pixel R is disposed in a 4×4 pixel array, pixel G is disposed in two 4×4 pixel arrays, and pixel B is disposed in a 4×4 pixel array, but the embodiments disclosed herein are not limited thereto.

[0106] FIG. 8 This is a partial top view of a solid-state image sensor 110 illustrated according to some other embodiments of the present disclosure. More specifically, FIG. 8 The pixel arrangement of the solid-state image sensor 110 is illustrated.

[0107] The solid-state image sensor 110 has a similar FIG. 8 The structure of the solid-state image sensor 108 is shown. (Refer to...) FIG. 8 In some embodiments, the solid-state image sensor 110 includes a first interpolated pixel array I1 disposed between a first unit pattern U1 and a second unit pattern U2. For example... FIG. 8As shown, in some embodiments, the first interposed pixel array I1 is also disposed between the third unit pattern U3 and the fourth unit pattern U4. Further, in some embodiments, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the first row of the first unit pattern U1 and the third unit pattern U3. In other words, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the last row (e.g., the eighth row in the illustrated embodiment) of the second unit pattern U2 and the fourth unit pattern U4. FIG. 8 As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4.

[0108] As shown, in some embodiments, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the first row of the first unit pattern U1 and the third unit pattern U3. In other words, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the last row (e.g., the eighth row in the illustrated embodiment) of the second unit pattern U2 and the fourth unit pattern U4. FIG. 8 As shown, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) can be an 8x8 pixel array, while the number of rows in the first interposed pixel array I1 can be four, although embodiments of the present disclosure are not limited thereto.

[0109] As shown, in some embodiments, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the first row of the first unit pattern U1 and the third unit pattern U3. In other words, the first interposed pixel array I1 exhibits a color corresponding to the color exhibited in the last row (e.g., the eighth row in the illustrated embodiment) of the second unit pattern U2 and the fourth unit pattern U4. FIG. 8 As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4. FIG. 8 Referring to FIG. 1, in some embodiments, the solid-state image sensor 110 also includes a second interposed pixel array I2 disposed between the first unit pattern U1 and the third unit pattern U3. As shown, in some embodiments, the second interposed pixel array I2 is also disposed between the second unit pattern U2 and the fourth unit pattern U4. Further, in some embodiments, the second interposed pixel array I2 overlaps the second axis of symmetry S2.

[0110] As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4. FIG. 8 As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4. FIG. 8 As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4. FIG. 9A-9H As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4.

[0111] As shown, each unit pattern (e.g., the first unit pattern U1, the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4) can be an 8x8 pixel array, while the number of rows in the first interposed pixel array I1 can be four, although embodiments of the present disclosure are not limited thereto. FIG. 9A-9H As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4. As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4.

[0112] FIG. 7 As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4. FIG. 8 As shown, in some embodiments, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the first column of the first unit pattern U1 and the second unit pattern U2. In other words, the second interposed pixel array I2 exhibits a color corresponding to the color exhibited in the last column (e.g., the eighth column in the illustrated embodiment) of the third unit pattern U3 and the fourth unit pattern U4.

[0113] FIGS. 9A-9H A different example of the first unit pattern U1. FIG. 9AEach of the first unit patterns U1 shown can be used to replace FIG. 9B or FIG. 9C The first unit pattern U1 shown is not limited to this embodiment.

[0114] It should be noted that the second unit pattern U2, the third unit pattern U3, and the fourth unit pattern U4 are adjusted based on the first unit pattern U1. That is, the arrangement of the regular pixels (e.g., pixels R, G, or B) and the PDAF (phasing focus pixel array) in the second unit pattern U2, the third unit pattern U3, and the fourth unit pattern U4 can be changed according to the arrangement of the regular pixels (e.g., pixels R, G, or B) and the PDAF in the first unit pattern U1. Furthermore, FIG. 9D It can also be different examples of the second unit pattern U2, the third unit pattern U3, or the fourth unit pattern U4.

[0115] like FIG. 9E As shown, each first unit pattern U1 has two autofocus pixel arrays PDAF1 and two autofocus pixel arrays PDAF2. For example, the autofocus pixel arrays PDAF1 and PDAF2 can be 2×2 pixel arrays, and they can be adjacent to each other. FIG. 9F As shown, there are two diagonally arranged autofocus pixel arrays (PDAF), and the PDAF can be a 2×2 pixel array. FIG. 9G As shown, there are two interleaved autofocus pixel arrays PDAF1 and PDAF2, and PDAF1 and PDAF2 can be 1×2 pixel arrays (or 2×1 pixel arrays). FIG. 9H As shown, there are four autofocus pixel arrays PDAF1 and PDAF2 that are interleaved with each other, and the autofocus pixel arrays PDAF1 and PDAF2 can be 2×1 pixel arrays (or 1×2 pixel arrays).

[0116] like ​ As shown, each first unit pattern U1 has two autofocus pixel arrays (PDAF). For example, the autofocus pixel arrays (PDAF) can be 3×1 pixel arrays (or 1×3 pixel arrays) separated from each other. ​ As shown, the PDAF autofocus pixel array is a 2×3 pixel array (or a 3×2 pixel array), and it is not located at the center of the first unit pattern U1. ​As shown, each first unit pattern U1 has two arrays of autofocus pixels PDAF. For example, the arrays of autofocus pixels PDAF can be 2x4 arrays of pixels (or 4x2 arrays of pixels) separated from each other. As shown, the arrays of autofocus pixels PDAF are 4x4 arrays of pixels disposed at the center of the first unit pattern U1. It should be noted that the number of rows and columns in each array of autofocus pixels (PDAF, PDAF1, or PDAF2) and the number of arrays of autofocus pixels in one first unit pattern U1 are not limited to the foregoing examples and can be adjusted according to actual needs. ​ As shown, the array of autofocus pixels PDAF is a 4x4 array of pixels disposed at the center of the first unit pattern U1. It should be noted that the number of rows and columns in each array of autofocus pixels (PDAF, PDAF1, or PDAF2) and the number of arrays of autofocus pixels in one first unit pattern U1 are not limited to the foregoing examples and can be adjusted according to actual needs.

[0117] In summary, according to embodiments of the present disclosure, because the solid-state image sensor has the foregoing symmetrical pattern design, the patterns on the opposite sides (for example, left and right sides or top and bottom sides) do not need to use different and complex image signal processing (ISP) (signal compensation), which can effectively simplify the image signal processing (ISP) (signal compensation). In addition, in some embodiments, the solid-state image sensor can include a first array of insertion pixels and a second array of insertion pixels, which can further improve the resolution degradation in the solid-state image sensor.

[0118] The components of the above-described embodiments have been summarized so that a person of ordinary skill in the art can better understand the ideas of the embodiments of the present disclosure. A person of ordinary skill in the art should understand that they can design or modify other processes and structures based on the embodiments of the present disclosure to achieve the same purposes and / or advantages as the embodiments introduced herein. A person of ordinary skill in the art should also understand that such equivalent structures do not deviate from the spirit and scope of the present disclosure, and they can make various changes, substitutions and replacements without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure is defined by the appended claims. In addition, although the present disclosure has been disclosed as above with several preferred embodiments, it is not intended to limit the present disclosure.

[0119] Reference throughout this specification to features, advantages, or similar language does not imply that all of the features and advantages that can be realized with the present disclosure should be or are implemented in any single embodiment of the present disclosure. Rather, language referring to the features and advantages is understood to mean that a particular feature, advantage, or characteristic is included in at least one embodiment of the present disclosure. As such, discussions of features and advantages, and similar language, throughout this specification may, but do not necessarily, represent the same embodiment.

[0120] Moreover, in one or more embodiments, the described features, advantages, and characteristics of the disclosure can be combined in any suitable manner. Those skilled in the relevant art will recognize, in light of the description herein, that the disclosure can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages can be recognized in certain embodiments that can not be present in all embodiments of the disclosure.

Claims

1. A solid-state image sensor having a first area and a second area adjacent to the first area along a first direction, the solid-state image sensor comprising: a first cell pattern disposed in the first area; and a second cell pattern disposed in the second area and corresponding to the first cell pattern; wherein each of the first cell pattern and the second cell pattern includes a plurality of regular pixels and an autofocus pixel array, the regular pixels and the autofocus pixel array form a first arrangement in the first cell pattern, the regular pixels and the autofocus pixel array form a second arrangement in the second cell pattern, the first arrangement and the second arrangement are symmetrical to each other along a first symmetry axis, wherein the solid-state image sensor has a third area adjacent to the first area along a second direction, the second direction is perpendicular to the first direction, and the solid-state image sensor further comprises: a third cell pattern disposed in the third area and corresponding to the first cell pattern; wherein the third cell pattern includes the regular pixels and the autofocus pixel array, the regular pixels and the autofocus pixel array form a third arrangement in the third cell pattern, the first arrangement and the third arrangement are symmetrical to each other along a second symmetry axis, the second symmetry axis is perpendicular to the first symmetry axis, wherein the solid-state image sensor has a fourth area adjacent to the second area along the second direction, and the solid-state image sensor further comprises: a fourth cell pattern disposed in the fourth area and corresponding to the second cell pattern; wherein the fourth cell pattern includes the regular pixels and the autofocus pixel array, the regular pixels and the autofocus pixel array form a fourth arrangement in the fourth cell pattern, the second arrangement and the fourth arrangement are symmetrical to each other along the second symmetry axis, wherein the solid-state image sensor further comprises: wherein each of the first unit pattern, the second unit pattern, the third unit pattern, and the fourth unit pattern is one (2n) 2 a pixel array, n is a positive integer greater than or equal to 2, a first interposed pixel array disposed between the first cell pattern and the second cell pattern, wherein the first interposed pixel array overlaps the first symmetry axis.

2. The solid-state image sensor of claim 1, wherein the regular pixels in the first cell pattern and the second cell pattern receive at least two different colors, and the regular pixels include a red filter, a green filter, a blue filter, a yellow filter, a white filter, a cyan filter, a magenta filter, or an infrared / near-infrared filter.

3. The solid-state image sensor of claim 1, wherein the first interposed pixel array is also disposed between the third cell pattern and the fourth cell pattern, a number of rows in the first interposed pixel array is n, and the first interposed pixel array exhibits colors corresponding to colors exhibited in a first row of the first cell pattern and the third cell pattern.

4. The solid-state image sensor of claim 1, further comprising: a second interposed pixel array disposed between the first cell pattern and the third cell pattern, wherein the second interposed pixel array overlaps the second symmetry axis. ​ 5. The solid-state image sensor of claim 4, wherein a second interposed pixel array is also disposed between the second unit pattern and the fourth unit pattern, the number of columns in the second interposed pixel array is n, and the second interposed pixel array exhibits colors corresponding to the colors exhibited in a first column of the first unit pattern and the second unit pattern.

6. The solid-state image sensor of claim 1, wherein the autofocus pixel arrays of the first unit pattern, the second unit pattern, the third unit pattern, and the fourth unit pattern are p x q pixel arrays, p and q are positive integers greater than or equal to 2n, and each of the first unit pattern, the second unit pattern, the third unit pattern, and the fourth unit pattern has more than one of the autofocus pixel arrays.

7. The solid-state image sensor of claim 1, wherein said normal pixels of the first, second, third and fourth unit patterns comprise a plurality of first color pixels and a plurality of second color pixels, said first color pixels being disposed in at least one n 2 pixel array, and said second color pixels being disposed in at least one n 2 pixel array.

Images