Title:
OPTICAL DETECTION COMPONENT AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/080778
Kind Code:
A1
Abstract:
Provided are an optical detection component (100) and a terminal device, the optical detection component (100) being located below a display module, and the display module is provided with a transparent panel, a first polarizing plate, a first wave plate and an illuminating layer from top to bottom in sequence. The optical detection component (100) is provided with the following from top to bottom in sequence: a second wave plate (101), a second polarizing plate (102), a light detection layer (103) and a light source layer (104), wherein the polarization direction of the first polarizing plate is perpendicular to that of the second polarizing plate (102), the fast axis of the second wave plate (101) is parallel to that of the first wave plate, and both the first wave plate and the second wave plate (101) are quarter wave plates; alternatively, the polarization direction of the first polarizing plate is parallel to that of the second polarizing plate (102), the fast axis of the second wave plate (101) is perpendicular to that of the first wave plate, and both the first wave plate and the second wave plate (101) are quarter wave plates. When the optical detection component (100) according to the present application is placed below the display module, the reflected light of the illuminating layer may be eliminated, thereby increasing the proportion of effective detecting light in the total light received by the light detection layer (103).
Inventors:
WEI WENXIONG (CN)
SHEN AO (CN)
WANG FAN (CN)
LI ZHIYONG (CN)
SHEN AO (CN)
WANG FAN (CN)
LI ZHIYONG (CN)
Application Number:
PCT/CN2018/111057
Publication Date:
May 02, 2019
Filing Date:
October 19, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06K9/00; G01S17/02
Domestic Patent References:
| WO2002093239A1 | 2002-11-21 |
Foreign References:
| CN107025451A | 2017-08-08 | |||
| CN106295527A | 2017-01-04 | |||
| CN106067018A | 2016-11-02 | |||
| CN106339682A | 2017-01-18 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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