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Enhancement film for under-screen optical fingerprint sensor

A technology of optical sensor and enhancement film, which is applied in optics, nonlinear optics, acquiring/arranging fingerprints/palmprints, etc., and can solve problems such as user burden

Active Publication Date: 2020-06-30
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a process can be burdensome to the user and has various practical limitations and inconveniences

Method used

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  • Enhancement film for under-screen optical fingerprint sensor
  • Enhancement film for under-screen optical fingerprint sensor
  • Enhancement film for under-screen optical fingerprint sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0055] As a specific example, Figure 2A and Figure 2B An exemplary embodiment of an electronic device 200 is shown having a touch-sensing display assembly and an optical fingerprint sensor module positioned below the touch-sensing display assembly. In this particular example, the display technology may be implemented with an LCD display with a backlight for optically illuminating the LCD pixels or another display with light-emitting display pixels that does not use a backlight (eg, an OLED display). The electronic device 200 may be a portable device such as a smart phone or a tablet computer, and may be such as figure 1 Device 188 is shown.

[0056] Figure 2A The front of device 200 is shown, which may resemble some features found in some existing smartphones or tablets. The device screen is located on the front side of the device 200, occupies all, most or a large part of the front side space, and the fingerprint sensing function is arranged on the device screen, for e...

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Abstract

A liquid crystal module optical enhancement panel for integration in an electronic device (200) is provided. The enhancement panel may be a backlight enhancement panel for use in an electronic device(200) having an integrated optical fingerprint sensor (181). The reinforcement panel includes a set of reinforcement film layers (1920), each reinforcement film layer (1920) having a prism structure with trapezoidal ridges (1922) and / or trapezoidal valleys (1924). The trapezoidal prism features may provide prism enhancement characteristics for light passing through the enhancement panel in one direction while providing a transparent viewing window for light passing through the enhancement panel in the opposite direction.

Description

technical field [0001] The present disclosure relates to optical fingerprint sensors, and more particularly, to enhancement films for under-display optical fingerprint sensors, such as optical fingerprint sensors integrated within display panel assemblies of mobile devices, wearable devices, and other computing devices. Background technique [0002] Various sensors can be implemented in an electronic device or system to provide certain desired functionality. Sensors that enable user authentication are an example of sensors that protect personal data and prevent unauthorized access in a variety of devices and systems, including portable or mobile computing devices (e.g., laptops, tablets, smartphones, ), game systems, various databases, information systems or larger computer-controlled systems. [0003] User authentication on electronic devices or systems may be performed by one or more forms of biometric identifiers, which may be used alone or in conjunction with convention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06F3/041G02F1/1333
CPCG06F3/0412G06F3/0416G02F1/13338G06V40/1341G06V40/1324
Inventor 何毅皮波
Owner SHENZHEN GOODIX TECH CO LTD