DISPLAY DEVICE, ELECTRONIC APPARATUS, AND ILLUMINATION REGION CONTROL METHOD OF DISPLAY DEVICE

• US 20150206469A1
• Filed: 08/24/2012
• Published: 07/23/2015
• Est. Priority Date: 08/24/2012
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC CASIO Mobile Communications Limited (NEC Corporation)
• Inventors: Kazami, Satoru
• Granted Patent: US 10,134,319 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/3215 Monitoring of peripheral devices
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: G09G 5/14 Display of multiple viewports
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Provided is a display device capable of illuminating a region desired by a user with a simple operation. A display device according to one exemplary embodiment of the invention includes a display means, a touch panel that is disposed on the display means and outputs coordinate information of a contact point, and a control means that sets a region around a contact point as an illumination region when contact with the touch panel is made at one point and sets a region interposed between a first contact point and a second contact point as the illumination region when contact with the touch panel is made at two points based on the coordinate information of the contact point.

Claims

1. A display device comprising:

a display unit;

a touch panel that is disposed on the display unit, and outputs coordinate information of a contact point; and

a control unit that sets a region around a contact point as an illumination region when contact with the touch panel is made at one point, and sets a region interposed between a first contact point and a second contact point as the illumination region when contact with the touch panel is made at two points, based on the coordinate information of the contact point.

2. The display device according to claim 1, wherein

the control units determines whether coordinate information of a second contact point is input within a specified period of time after coordinate information of a first contact point is input, and when the coordinate information of the second contact point is input within the specified period of time, sets a region interposed between the first contact point and the second contact point as the illumination region, and when the coordinate information of the second contact point is not input within the specified period of time, sets a region around the first contact point as the illumination region.

3. The display device according to claim 1, wherein

the control units determines whether a third contact point is within a region interposed between the first contact point and the second contact point, and

when the third contact point is within the region, the control units moves display information displayed near the third contact point within the region based on a contact operation from the third contact point, and

when the third contact point is outside the region, the control units changes brightness in the region based on a contact operation from the third contact point.

4. The display device according to claim 3, wherein

the control units determines whether coordinate information of a third contact point is input within a specified period of time after coordinate information of a second contact point is input, and

when the coordinate information of the third contact point is input within the specified period of time, the control units determines whether the third contact point is within a region interposed between the first contact point and the second contact point, and

when the coordinate information of the third contact point is not input within the specified period of time, the control units sets a region interposed between the first contact point and the second contact point as the illumination region.

5. An electronic apparatus comprising the display device according to claim 1.

6. An illumination range control method of a display device, comprising:

determining whether coordinate information of a second contact point is input within a specified period of time after coordinate information of a first contact point is input by contact with a touch panel disposed on a display units;

when the coordinate information of the second contact point is input within the specified period of time, setting a region interposed between the first contact point and the second contact point as an illumination region; and

when the coordinate information of the second contact point is not input within the specified period of time, setting a region around the first contact point as the illumination region.

7. The illumination range control method of a display device according to claim 6, comprising:

determining whether coordinate information of a third contact point is input within a specified period of time after coordinate information of a second contact point is input;

when the coordinate information of the third contact point is input within the specified period of time, determining whether the third contact point is within a region interposed between the first contact point and the second contact point, and when the third contact point is within the region, moving display information displayed near the third contact point within the region based on a contact operation from the third contact point, and when the third contact point is outside the region, changing brightness in the region based on a contact operation from the third contact point; and

when the coordinate information of the third contact point is not input within the specified period of time, setting a region interposed between the first contact point and the second contact point as the illumination region.