TOUCH SENSITIVE DISPLAY DEVICE AND METHOD THEREOF

• US 20110074722A1
• Filed: 12/02/2010
• Published: 03/31/2011
• Est. Priority Date: 10/26/2005
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: PARK, Jong-Woung, CHO, Man-Seung, UH, Kee-Han, CHOI, Young-Jun, LEE, Joo-Hyung
• Granted Patent: US 8,305,340 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells

Abstract

The present invention relates to a touch sensitive display device, the display device including a display panel unit, a sensing unit formed on the display panel unit, receiving a sensor control signal, and generating a sensor data signal based on a touch exerted on the display panel unit, an output unit generating a sensing signal based on the sensor data signal from the sensing unit, and a compensation unit adjusting the sensor control signal such that the sensing signal is bounded in a predetermined range.

Claims

1. A display device comprising:

a display panel unit;

a sensing unit formed on the display panel unit, receiving a sensor control signal, and generating a sensor data signal based on a touch exerted on the display panel unit;

an output unit generating a sensing signal based on the sensor data signal from the sensing unit; and

a compensation unit adjusting the sensor control signal such that the sensing signal is bounded in a predetermined range.

2. A method of improving a touch sensing operation in a touch sensitive display device, the method comprising:

applying a sensor control signal to a sensor data line;

generating a sensor data signal from a sensing unit connected to the sensor data line based on a touch exerted on the display device;

generating a sensing signal based on the sensor data signal; and

, bounding the sensing signal within a preset range by adjusting the sensor control signal applied to the sensor data line.