Image sensor, control method, and electronic device

A control method configured to control an image sensor, wherein the image sensor comprises a light sensing array, a light filtering array, and a plurality of conversion units, the light sensing array comprises a plurality of light sensing units, each of the light sensing units comprises a plurality of light sensing pixels, the light filtering array is disposed on the light sensing array, the light filtering array comprises a plurality of light filtering units, each of the light filtering units correspondingly covers one of the light sensing units, each of the light sensing units comprises a plurality of light sensing pixels, at least one of the at least two source followers is connected to a plurality of the light sensing pixels, each of the light sensing units comprises 2×2 light sensing pixels, one of the source followers being connected to at least three of the light sensing pixels when each of the conversion units comprises two source followers, and one of the at least three source followers being connected to at least two of the light sensing pixels when each of the conversion units comprises at least three source followers, the image sensor further comprises a plurality of clock switches configured to control the light sensing pixels to be exposed, a plurality of reset switches configured to reset the light sensing pixels, and a plurality of readout switches configured to control readouts of the light sensing pixels, and the control method comprises:

• controlling the clock switches, the reset switches, and the readout switches to read two image frames;
• and
• synthesizing the two image frames to acquire a high dynamic range image.

An electronic device, comprising an image sensor, wherein the image sensor comprises:

• a light sensing array comprising a plurality of light sensing units, wherein each of the light sensing units comprises a plurality of light sensing pixels;
• a light filtering array disposed on the light sensing array, wherein the light filtering array comprises a plurality of light filtering units, and each of the light filtering units correspondingly covers one of the light sensing units;
• a micromirror array disposed on the light filtering array and comprising a plurality of micromirrors, wherein each of the micromirrors corresponds to one of the light sensing pixels;
• and
• a plurality of conversion units, wherein each of the conversion units comprises at least two source followers, and at least one of the at least two source followers is connected to a plurality of the light sensing pixels;
• wherein when each of the conversion units comprises two source followers, one of the source followers is connected to at least three of the light sensing pixels,
• wherein when each of the conversion units comprises at least three source followers, one of the at least three source followers is connected to at least two of the light sensing pixels.