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US 11,380,244 B2Granted
Display device integrating display function and fingerprint scanning function
AssigneeInnolux Corporation
InventorsShun-Mao Lin, Hsing-Yuan Hsu, Po-Yang Chen, I-An Yao
Life of this patent
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Abstract
A display device includes a peripheral circuit, a display gate line and a fingerprint gate line. The peripheral circuit includes a demultiplexer. The display gate line is electrically connected to the demultiplexer for transmitting a display scan signal. The fingerprint gate line is electrically connected to the demultiplexer for transmitting a fingerprint scan signal.
Claims17
A display device comprising:
- a peripheral circuit comprising a first demultiplexer and a first shift register;
- a first display gate line electrically connected to the first demultiplexer and configured to transmit a first display scan signal;
- a first fingerprint gate line electrically connected to the first demultiplexer and configured to transmit a first fingerprint scan signal;
- a display scan driver configured to generate a display scan start signal;
- a fingerprint scan driver configured to generate a fingerprint scan start signal;
- and
- an OR gate having a first input terminal coupled to the display scan driver for receiving the display scan start signal, a second input terminal coupled to the fingerprint scan driver for receiving the fingerprint scan start signal, and an output terminal electrically connected to the first shift register for outputting the display scan start signal or the fingerprint scan start signal;
- wherein the first shift register is electrically connected to the first demultiplexer and configured to generate the first display scan signal according to the display scan start signal and generate the first fingerprint scan signal according to the fingerprint scan start signal.
5 more elements
A display device comprising:
- a peripheral circuit comprising a first demultiplexer and a first shift register;
- a first display gate line electrically connected to the first demultiplexer and configured to transmit a first display scan signal;
- and
- a first fingerprint gate line electrically connected to the first demultiplexer and configured to transmit a first fingerprint scan signal;
- wherein the first shift register electrically connected to the first demultiplexer and configured to generate the first display scan signal according to a display scan start signal and generate the first fingerprint scan signal according to a fingerprint scan start signal;
- and
- wherein during a fingerprint scanning period of the display device:
- the display device generates the first fingerprint scan start signal to reset a plurality of photosensitive pixels in the display device;
- while performing light-sensing after resetting the plurality of photosensitive pixels, the display device generates the display scan start signal;
- and
- after the plurality of photosensitive pixels complete light-sensing, the display device generates the first fingerprint scan signal again to read sensing data generated by the plurality of photosensitive pixels.
8 more elements
A display device comprising:
- a peripheral circuit comprising:
- a first demultiplexer;
- an (m+1)th shift register;
- an mth demultiplexer;
- and
- an mth shift register electrically connected to the (m+1)th shift register and the mth demultiplexer and configured to generate an mth display scan signal according to an (m+1)th display scan signal and generate an mth fingerprint scan signal according to an (m+1)th fingerprint scan signal, m being a positive integer greater than 1;
- a first display gate line electrically connected to the first demultiplexer and configured to transmit a first display scan signal;
- a first fingerprint gate line electrically connected to the first demultiplexer and configured to transmit a first fingerprint scan signal;
- an (m+1)th shift register;
- a fingerprint scan driver configured to generate a fingerprint scan start signal;
- and
- an OR gate having a first input terminal coupled to the mth shift register for receiving the mth display scan signal and the mth fingerprint scan signal, a second input terminal coupled to the fingerprint scan driver for receiving the fingerprint scan start signal, and an output terminal electrically connected to the (m+1)th shift register for outputting the mth display scan signal or the fingerprint scan start signal to the (m+1)th shift register.
9 more elements
Dependencies are inferred from the claim text.