Display screen, electronic device and information processing method for the electronic device

Patent metadata

Field	Value
Publication number	US-9812075-B2
Application number	US-201414188984-A
Country	US
Kind code	B2
Filing date	Feb 25, 2014
Priority date	Feb 26, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A display screen is disclosed. The display screen comprises a light source layer, configured to be in an “on” state for providing a display light source corresponding to a first display mode, when the display screen is in the first display mode, and to be in an “off” state when the display screen is in a second display mode different from the first display mode; a liquid crystal layer, disposed in front of the light source layer; a polarizer, disposed in front of the liquid crystal layer; and a control unit, in connection with the liquid crystal layer and configured to control the liquid crystal layer. An electronic device is also disclosed, including the above described display screen and a method for processing information of the electronic device.

First claim

The invention claimed is:

1. A method for processing information, applicable in an electronic device comprising a display unit, characterized in that, the method comprises the steps of:
sampling a parameter information, when contents are being displayed on the display unit;
determining whether the parameter information satisfies a predetermined first condition; and
adjusting a displayed parameter value corresponding to display of the display unit from a first value to a second value different from the first value, so as to improve contrast of the contents under ambient light where the electronic device is located, when the parameter information satisfies the predetermined first condition;
wherein the parameter information comprises behaviour features using the electronic device;
wherein a process of determining whether the parameter information satisfies the predetermined first condition includes determining whether the behaviour features indicate that a light illumination intensity corresponding to the ambient light is larger than a threshold value of a light illumination intensity for a user;
wherein the process of determining whether the behaviour features indicate that the light illumination intensity corresponding to the ambient light is larger than the threshold value of the light illumination intensity for the user includes:
determining whether the behaviour features indicate a first shading object and a head of the user meet a predetermined first relationship, wherein the predetermined first relationship is: a distance of the first shading object from the head being less than a predetermined distance threshold value, or the first shading object being in contact with the head, or an angle between the first shading object and the head being within a predetermined range of angles;

wherein when a surface of the display unit is provided with an optical unit, the displayed parameter value is an optical parameter value of the optical unit, and the process of adjusting the displayed parameter value from a first value to a second value different from the first value is to adjust the optical parameter value from a first optical parameter value to a second optical parameter value different from the first optical parameter value;
wherein a first absorption capability of the optical unit to the ambient light when the optical parameter value is the second optical parameter value, is larger than a second absorption capability of the optical unit to the ambient light when the optical parameter value is the first optical parameter value; and
wherein a third absorption capability of the optical unit to the first light corresponding to the contents when the optical parameter value is the second optical parameter value, is larger than a fourth absorption capability of the optical unit to the first light when the optical parameter value is the first optical parameter value.

2. The method as claimed in claim 1 , wherein:
in a case that the optical unit comprises a liquid crystal layer provided on a surface of the display unit and comprising at least one liquid crystal particle and a linear polarizer provided on a surface of the liquid crystal layer, the process of adjusting the optical parameter value from the first optical parameter value to the second optical parameter value different from the first optical parameter value, is to adjust the at least one liquid crystal particle from a first alignment to a second alignment different from the first alignment; and
wherein when the at least one liquid crystal particle is in the first alignment, the absorption capability of the linear polarizer to the ambient light is the second absorption capability, and the absorption capability of the linear polarizer to the first light is the fourth absorption capability; and when the at least one liquid crystal particle is in the second alignment, the absorption capability of the liner polarizer to the ambient light is the first absorption capability, and the absorption capability of the linear polarizer to the first light is the third absorption capability.

3. The method as claimed in claim 2 , wherein:
when the at least one liquid crystal particle is in the second alignment, the linear polarizer is used to absorb light of the ambient light whose polarized component is parallel to a polarized direction of the linear polarizer, so that the ambient light are converted into a first linearly polarized light having a polarized direction perpendicular to an absorption direction of the linear polarizer;
the liquid crystal layer is used to convert the first linearly polarized light into a first circularly polarized light, and the display unit is used to reflect the first circularly polarized light back to the liquid crystal layer, so as to obtain a second circularly polarized light;
the liquid crystal layer is also used to convert the second circularly polarized light into a second linearly polarized light having a polarized direction parallel to an absorption direction of the linear polarizer;
the linear polarizer is also used to absorb the second linearly polarized light, and the display unit is also used to generate the first light being the third linearly polarized light;
the liquid crystal layer is also used to convert the third linearly polarized light into a third circularly polarized light, and the linear polarizer is also used for absorbing component of the third circularly polarized light having a polarized direction parallel to the absorption direction of the linear polarizer;
when the at least one liquid crystal particle is in the first alignment, the liquid crystal layer cannot convert the first linearly polarized light into the second linearly polarized light, and thus it only filters out components of the ambient light parallel to the absorption direction of the linear polarizer by means of the linear polarizer, instead of the first linearly polarized light, so that the second absorption capability is less than the first absorption capability; and
the liquid crystal layer cannot convert the third linearly polarized light into the third circularly polarized light, and the absorption direction of the linear polarizer is perpendicular to the polarized direction of the third linearly polarized light, so that it does not function to absorb the third linearly polarized light, and as such, the third linearly polarized light will not be absorbed by the linear polarizer, so that the fourth absorption capability is less than the third absorption capability.

4. The method as claimed in claim 2 , wherein the process of adjusting the at least one liquid crystal particle from the first alignment to the second alignment different from first alignment includes:
adjusting a voltage applied at two ends of the liquid crystal layer from a first voltage to a second voltage different from the first voltage, so that the at least one liquid crystal particle is adjusted from the first alignment to the second alignment by the second voltage.

5. The method as claimed in claim 1 , wherein the process of determining whether behaviour features using the electronic device indicate that the light illumination intensity corresponding to the ambient light is larger than the threshold value of the light illumination intensity for the user further includes:
determining whether the behaviour features indicate a second shading object and the display unit meet a predetermined second relationship.

Assignees

• Beijing Lenovo Software Ltd
• Lenovo Beijing Ltd

Inventors

• Xu Fang
• Zhang Zhenhua
• Shang Ke
• Zhong Like

Classifications

• G09G3/36 Primary

  using liquid crystals · CPC title

• G02F2001/133618

  Physics · mapped topic

• G02F2001/133626

  Physics · mapped topic

• G02F1/1336

  Illuminating devices · CPC title

• G02F2001/133638

  Physics · mapped topic