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Display device and ambient light sensor thereof

A technology of ambient light sensor and display device, which is applied in the direction of measuring device, identification device, static indicator, etc., and can solve the problem of misjudgment of ambient light intensity and other problems

Pending Publication Date: 2021-04-30
EMINENT ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Light from the OLED display panel can cause the ambient light sensor to misjudge the intensity of the ambient light

Method used

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  • Display device and ambient light sensor thereof
  • Display device and ambient light sensor thereof
  • Display device and ambient light sensor thereof

Examples

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Embodiment Construction

[0012] figure 1 A cross-sectional view of a first embodiment of a display device of the present invention is shown. figure 1 The display device 10 includes a glass cover 12 , an upper linear polarizer 14 , an OLED display panel 16 and an ambient light sensor 18 . The upper linear polarizer 14 is disposed between the glass cover 12 and the OLED display panel 16 , and the upper linear polarizer 14 is on one side of the OLED display panel 16 . The ambient light sensor 18 is disposed on the other side of the OLED display panel 16 relative to the upper linear polarizer 14 . The upper linear polarizer 14 has a reference polarization direction. When the non-polarized ambient light L1 outside the display device 10 passes through the upper linear polarizer 14 , it will become linearly polarized light with a reference polarization direction. The OLED display panel 16 is used to display images and / or texts. The ambient light sensor 18 includes a first lower linear polarizer 181 , a s...

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Abstract

The invention discloses a display device and an ambient light sensor, and the display device comprises an OLED (Organic Light Emitting Diode) display panel, an upper linear polaroid and an ambient light sensor. And the upper linear polaroid is positioned above the OLED display panel. And the ambient light sensor is positioned below the OLED display panel. The ambient light sensor comprises a first sensing element, a second sensing element, a first lower linear polaroid and a second lower linear polaroid. The first sensing element is used for sensing light to generate a first sensing value. The first lower linear polaroid is between the OLED display panel and the first sensing element. The second sensing element is used for sensing the light to generate a second sensing value. The second lower linear polaroid is between the OLED display panel and the second sensing element. The first sensing value and the second sensing value are used for calculating the intensity of ambient light.

Description

technical field [0001] The present invention relates to a display device, in particular to a display device capable of accurately sensing ambient light and an ambient light sensor thereof. Background technique [0002] Most mobile electronic devices and wearable electronic devices with display devices use ambient light sensors to detect ambient brightness to adjust the brightness of the screen. A conventional ambient light sensor is placed in a space around a screen of a display device. However, with the demand for a high screen-to-body ratio, there is less and less space around the screen for placing ambient light sensors. In a display device having an organic light-emitting diode (OLED) display panel, the ambient light sensor may be disposed under the OLED display panel. However, in addition to receiving ambient light, the ambient light sensor on the back of the OLED display surface also receives light from the OLED display panel. The light from the OLED display panel m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/42G01J1/44G01J1/04G09F9/33G09G3/3208
CPCG01J1/4204G01J1/4228G01J1/44G01J1/0429G01J1/0407G09F9/33G09G3/3208G01J2001/446H10K59/8791H01L25/167H10K59/60H01L25/18H01L27/1443H10K50/86
Inventor 吴高彬陈怡永罗展鹏
Owner EMINENT ELECTRONICS TECH