# US 2014/0191956 A1 · Flexible display screen and method and apparatus for controlling the same

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- Number: US 2014/0191956 A1
- Document ID: US20140191956A1
- Status: Published application
- Kind: A1
- Application number: 14/234,486
- Filed: 2012-07-20
- Published: 2014-07-10
- Earliest claimed: 2011-08-01
- Assignees: Beijing Lenovo Software Ltd.; Lenovo (Beijing) Limited
- Inventors: Shengjun Suo
- Web page: https://patentgrep.com/patent/US20140191956A1

## CPC

- G09G 3/03: {specially adapted for displays having non-planar surfaces, e.g. curved displays}
- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G06F 3/01: Input arrangements or combined input and output arrangements for interaction between user and computer (G06F3/16 takes precedence)
- G09G 3/2092: {Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165)}
- G09G 2354/00: Aspects of interface with display user
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A method for controlling a flexible display screen having a first curvature is provided. The method comprises: detecting target information to obtain a detection result (101); querying a database based on the detection result to determine whether the first curvature is included in a preset range of curvature values corresponding to the detection result (102), the database storing a correspondence between a range of target information values and a range of curvature values; and generating a control command to adjust the flexible display screen to a second curvature different from the first curvature when the first curvature is not included in the preset range of curvature values (103). With the present invention, the curvature of the flexible display screen can be adjusted as desired, such that a user of the display screen can have an optimized view angle. The present application solves a problem in the prior art that the curvature of the flexible display screen cannot be adjusted as desired and avoids unclear view of a picture due to view angle.

## Claims

### Claim 1

A method for controlling a flexible display screen having a first curvature, comprising:
detecting target information to obtain a detection result;
querying a database based on the detection result to determine whether the first curvature is included in a preset range of curvature values corresponding to the detection result, the database storing a correspondence between a range of target information values and a range of curvature values; and
generating a control command to adjust the flexible display screen to a second curvature different from the first curvature when the first curvature is not included in the preset range of curvature values.

### Claim 2 (depends on 1)

The method of claim 1, wherein
the target information indicates a distance between a center of the flexible display screen and a first user;
the detection result indicates a first distance between the center of the flexible display screen and the first user; and
the step of querying the database based on the detection result to determine whether the first curvature is included in the preset range of curvature values corresponding to the detection result comprises:
querying the database based on the first distance to determine whether the current first curvature of the flexible display screen is included in the preset range of curvature values, the database storing a correspondence between a range of distance values and a range of curvature values.

### Claim 3 (depends on 1)

The method of claim 1, wherein
the target information indicates distances between a center of the flexible display screen and at least two users;
the detection result indicates at least two distance values between the center of the flexible display screen and the at least two users; and
the step of querying the database based on the detection result to determine whether the first curvature is included in the preset range of curvature values corresponding to the detection result comprises:
querying the database based on the at least two distance values to determine whether the current first curvature of the flexible display screen is included in the preset range of curvature values corresponding to the at least two distance values, the database storing a correspondence between a range of distance values and a range of curvature values.

### Claim 4 (depends on 2)

The method of claim 2, wherein the distance/distances is/are measured by a distance detection device that uses sound waves and/or captured images for measuring the distance/distances.

### Claim 5 (depends on 1)

The method of claim 1, wherein
the target information indicates a brightness of an environment where the flexible display screen is currently located;
the detection result indicates a current brightness value; and
the step of querying the database based on the detection result to determine whether the first curvature is included in the preset range of curvature values corresponding to the detection result comprises:
querying the database based on the first brightness value to determine whether the current first curvature of the flexible display screen is included in the preset range of curvature values corresponding to the brightness, the database storing a correspondence between a range of brightness values and a range of curvature values.

### Claim 6 (depends on 1)

The method of claim 1, wherein
the target information indicates a current angle between the flexible display screen and a horizontal plane;
the detection result indicates an angle value; and
the step of querying the database based on the detection result to determine whether the first curvature is included in the preset range of curvature values corresponding to the detection result comprises:
querying the database based on the first angle value to determine whether the current first curvature of the flexible display screen is included in the preset range of curvature values corresponding to the angle value, the database storing a correspondence between a range of angle values and a range of curvature values.

### Claim 7 (depends on 1)

The method of claim 1, wherein the step of adjusting the flexible display screen to the second curvature comprises:
adjusting the curvature of the flexible display by a predetermined step based on the control command;
determining whether the adjusted curvature is included in a preset range;
repeating the adjusting and determining steps until the adjusted curvature is included in the preset range, or
adjusting the curvature of the flexible display directly to a curvature included in the preset range based on the control command.

### Claim 8

An apparatus for controlling a flexible display screen having a first curvature, comprising:
a detection unit adapted to detect target information to obtain a detection result;
a determination unit adapted to query a database based on the detection result to determine whether the first curvature is included in a preset range of curvature values corresponding to the detection result, the database storing a correspondence between a range of target information values and a range of curvature values; and
an adjustment unit adapted to generate a control command to adjust the flexible display screen to a second curvature different from the first curvature when the first curvature is not included in the preset range of curvature values.

### Claim 9 (depends on 8)

The apparatus of claim 8, wherein
the target information indicates a distance between a center of the flexible display screen and a first user and the detection result indicates a first distance between the center of the flexible display screen and the first user,
the target information indicates distances between a center of the flexible display screen and at least two users and the detection result indicates at least two distance values between the center of the flexible display screen and the at least two users,
the target information indicates a brightness of an environment where the flexible display screen is currently located and the detection result indicates a current first brightness value, or
the target information indicates a current angle between the flexible display screen and a horizontal plane and the detection result indicates a first angle value.

### Claim 10

A flexible display screen having a first curvature, comprising:
a detection unit adapted to detect target information to obtain a detection result;
a storage unit having a database storing a correspondence between a range of target information values and a range of curvature values; and
a processing unit adapted to query the database based on the detection result to determine whether the first curvature is included in a preset range of curvature values corresponding to the detection result, and generate a control command to adjust the flexible display screen to a second curvature different from the first curvature when the first curvature is not included in the preset range of curvature values.

### Claim 11 (depends on 10)

The flexible display screen of claim 10, wherein the detection result indicates a distance and the detection unit uses sound waves and/or captured images for measuring the distance.