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Electronic circuit with display driving, touch sensing, and fingerprint sensing functions

An electronic circuit and display driving technology, applied in the direction of acquiring/arranging fingerprints/palmprints, static indicators, electrical digital data processing, etc., can solve the problem of increasing the size of the frame

Pending Publication Date: 2021-03-12
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for an electronic circuit capable of driving a display panel to perform a display operation, a touch sensing operation, and a fingerprint sensing operation, multiple input-output (I / O) pins and complicated wiring may be required between the electronic circuit and the display panel for signal transmission
Multiple I / O pins and complex routing will increase the width of the fan-out area corresponding to the electronic circuit and the bezel size near the electronic circuit in the display panel

Method used

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  • Electronic circuit with display driving, touch sensing, and fingerprint sensing functions
  • Electronic circuit with display driving, touch sensing, and fingerprint sensing functions
  • Electronic circuit with display driving, touch sensing, and fingerprint sensing functions

Examples

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Embodiment Construction

[0102] Examples are provided below to describe the present invention in detail, but the present invention is not limited to the provided examples, and the provided examples can be appropriately combined. The terms "coupling / coupled" or "connecting / connected" used in the description of this application (including the claims) may refer to any direct or indirect connection. For example, "the first device is coupled to the second device" should be interpreted as "the first device is directly connected to the second device" or "the first device is indirectly connected to the second device through other devices or connecting members". The term "signal" may refer to current, voltage, electrical charge, temperature, data, electromagnetic wave, or any one or more signals. Additionally, the term "and / or" may mean "at least one of". For example, "the first signal and / or the second signal" should be interpreted as "at least one of the first signal and the second signal".

[0103] figur...

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Abstract

An electronic circuit suitable for driving a display panel including a touch sensor and a fingerprint sensor is provided. The electronic circuit includes a first circuit, a second circuit, and a switching circuit. The first circuit is configured to generate a display driving signal for driving a data line of the display panel. The second circuit is configured to receive a fingerprint sensing signal corresponding to the fingerprint image from a fingerprint sensing line of the display panel. The switching circuit includes a plurality of first terminals and a plurality of second terminals. The first end is coupled to the first circuit and the second circuit. The second end may be configured to couple to the display panel via a plurality of first pins of the electronic circuit. Each of the first pins may be configured to couple to a corresponding data line and a corresponding fingerprint sensing line in the display panel.

Description

technical field [0001] The present invention relates to an electronic circuit, an electronic device, and a display panel, and more particularly, to an electronic circuit suitable for driving a display panel including a touch sensor and a fingerprint sensor, and to an electronic circuit including an electronic circuit and a display panel. Electronic device for display panel. Background technique [0002] In recent years, the demand for fingerprint sensing has gradually increased. In order to reduce the size of the electronic device, the fingerprint sensing area can overlap with the display area of ​​the electronic device. For example, the under-display fingerprint identification technology is to embed the fingerprint sensor into the display panel, and the fingerprint sensor can sense or capture the fingerprint image through the display panel. When a touch event such as fingerprint identification occurs, the touch sensing circuit can report it to the application processor of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06K9/00
CPCG06F3/0416G06V40/13G06F3/0412G06F3/04166G06F3/0418G09G3/3648G09G2310/0264G09G2310/0267G09G2310/027G09G2354/00G09G2370/08G09G3/2092G06V40/1318G09G2310/0291G09G2310/08G09G2320/0673
Inventor 郭丰荣李荣崇黄秋皇洪挺轩
Owner NOVATEK MICROELECTRONICS CORP