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Light sensor arrangement

A light sensor and sensor technology, applied in the field of light sensors, can solve the problems of difficult process integration, size limitation, packaging difficulties, etc.

Active Publication Date: 2011-11-23
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It has been challenging to resolve the above difficulties in the accurate sensing of visible light
Manufacturing costs, size constraints, packaging difficulties, process integration, and other issues associated with various approaches make it difficult to effectively and efficiently detect visible light to control electronic displays at their source

Method used

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Embodiment Construction

[0016] While the invention is susceptible to various modifications and alternative forms, specific details of the invention are shown by way of example in the drawings and will be described in detail below. It should be understood, however, that the invention is not limited to the particular embodiments described. On the contrary, the invention covers all modifications, equivalents and alternatives falling within the scope of the invention as defined by the appended claims.

[0017] The present invention is applicable to various sensor devices and methods, in particular to sensor devices that selectively detect visible light. Although the present invention is not necessarily limited to such applications, an understanding of the various aspects of the invention is best gained by discussing examples in such an environment.

[0018] According to an example embodiment of the present invention, a semiconductor sensor device provides an output signal characterizing the visible (lum...

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Abstract

Ambient light is sensed for use in determining luminous flux. According to an example embodiment, ambient light is sensed using two light sensor arrangements that respectively respond differently to light of different relative wavelengths. The output of the sensors is nonlinearly combined to generate data indicative of the luminous flux. This luminous flux data is used to generate a control output for controlling an electronic display.

Description

technical field [0001] This patent application document relates to a light sensor, and more particularly, to a light sensor for detecting the intensity of luminous light. Background technique [0002] Human perception of the image quality of an electronic display is strongly affected by the amount of visible background lighting present in the environment at which the electronic display is located. For example, electronic displays generally look better when operated at higher light intensities when ambient light conditions involve high background lighting (eg, sunlight or bright artificial light). When ambient light conditions involve relatively low background lighting (eg, at night or in low light conditions indoors), electronic displays view better when operated at lower light intensities. In this regard, it is often desirable to control an electronic display device to provide a desired image quality. These background lighting considerations are applicable to various devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/146G01J1/42G01J1/44G01J5/60
CPCH01L27/14647G01J1/4204G01J5/60G01J1/4228
Inventor 维塔利·苏什科夫罗布·范达伦
Owner NXP BV