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Environment light sensor and electronic equipment

An ambient light sensor and electronic device technology, applied in the field of electronics, can solve the problems of reduced detection accuracy of the ambient light sensor and the like

Pending Publication Date: 2021-06-15
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an ambient light sensor and electronic equipment to solve the problem that the light emitted by the display screen itself irradiates the ambient light sensor in the existing OLED display screen, resulting in a decrease in the detection accuracy of the ambient light sensor

Method used

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  • Environment light sensor and electronic equipment
  • Environment light sensor and electronic equipment
  • Environment light sensor and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a structural schematic diagram of an ambient light sensor provided in Embodiment 1 of the present application applied to electronic equipment, figure 2 It is a schematic diagram of the optical path of circularly polarized light passing through the first quarter-wave plate provided in Embodiment 1 of the present application.

[0057] An ambient light sensor 10 provided in an embodiment of the present application is applied to an electronic device 100, see figure 1 As shown, specifically, when the ambient light sensor 10 is applied to the electronic device 100 , the ambient light sensor 10 is disposed under the screen 20 of the electronic device 100 .

[0058] The ambient light sensor 10 includes a first receiving unit 11, a second receiving unit 12, a first linear polarizer 132 and a first quarter wave plate 131, wherein the first linear polarizer 132 is located on the first receiving unit 11 Above, the first quarter-wave plate 131 is located above the ...

Embodiment 2

[0090] Figure 7 It is a structural schematic diagram of an ambient light sensor provided in Embodiment 2 of the present application applied to electronic equipment.

[0091] see Figure 7 As shown, the difference from Embodiment 1 is that in the embodiment of the present application, the first quarter-wave plate 131 extends to the top of the second receiving unit 12, when the ambient light I 2 The ambient light I formed after passing through the screen 20 3 When it is irradiated onto the first quarter-wave plate 131, it can pass through the first quarter-wave plate 131 and then irradiates onto the second receiving unit 12, and the screen leaks 1 1 It can also be irradiated onto the second receiving unit 12 after passing through the first quarter-wave plate 131 .

[0092] The second receiving unit 12 is used to receive and detect the screen light leakage after passing through the first quarter wave plate 131, and the second receiving unit 12 is also used to receive and dete...

Embodiment 3

[0107] Figure 11 It is a structural schematic diagram of an ambient light sensor provided in Embodiment 3 of the present application applied to electronic equipment, Figure 12 It is a schematic diagram of the optical path of circularly polarized light after passing through the first linear polarizing plate provided in Embodiment 3 of the present application.

[0108] see Figure 11 As shown, the difference from Embodiment 1 is that in the embodiment of the present application, the first linear polarizing film 132 extends above the second receiving unit 12, and the first linear polarizing film 132 is also used to transmit light from the screen and the environment. Pass. That is, when ambient light I 2 The ambient light I formed after passing through the screen 20 3 When irradiating onto the first linear polarizing plate 132 , it can pass through the first linear polarizing plate 132 and then irradiate onto the second receiving unit 12 . Screen Light Leak I 1 It can also...

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Abstract

The invention provides an environment light sensor and electronic equipment. The environment light sensor is arranged below a screen of the electronic equipment; the environment light sensor comprises a first receiving unit, a second receiving unit, a first linear polaroid and a first quarter-wave plate; the first linear polaroid is located above the first receiving unit; the first quarter-wave plate is located above the first linear polaroid; and at most one of the first linear polaroid and the first quarter-wave plate extends to a position above the second receiving unit; the first quarter-wave plate and the first linear polaroid can enable screen leaked light and environment transmitted light to penetrate through; the first linear polaroid is further used for blocking the environment transmitted light penetrating through the first quarter-wave plate to penetrate through, so that the first receiving unit receives the screen leaked light, and the second receiving unit receives the sum of the screen leaked light and the environment transmitted light; and the intensity of the environment transmitted light can be obtained through the difference between the screen leaked light and the sum of the screen leaked light and the environment transmitted light, so that the environmental transmitted light and the screen leaked light are distinguished, and the detection accuracy of the environment light sensor is improved.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to an ambient light sensor and electronic equipment. Background technique [0002] In order to allow human eyes to browse the display screen more comfortably when the ambient light changes, most of the existing electronic devices include an ambient light sensor to detect the brightness of the external ambient light where the electronic device is located, so as to adjust the brightness of the display screen. For example, when the external ambient light intensity becomes weak, the ambient light sensor detects a weak ambient light signal value and transmits it to the electronic device processor. Under low ambient light intensity, it can also reduce the intensity of the display screen in real time to reduce power consumption. [0003] At present, in the common OLED display screen, the ambient light sensor is mainly arranged under the display screen. Specifically, the disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/42G01J1/44G01J1/02G01J1/04
CPCG01J1/4204G01J1/4228G01J1/44G01J1/0214G01J1/0238G01J1/0429G01J2001/444
Inventor 胡泽望姚国峰沈健
Owner SHENZHEN GOODIX TECH CO LTD
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