Touch screen panel, electronic notebook, and mobile terminal

An electronic notebook comprising:

• an electronic paper;
• and
• a main body coupled to the electronic paper, wherein:
• the electronic paper includes:
• a liquid crystal having a first side and a second side,
• a plurality of first transparent electrodes provided at the first side of the liquid crystal and extending along a first direction, and
• a plurality of second transparent electrodes provided at the second side of the liquid crystal and extending along a second direction perpendicular to the first direction, where the plurality of first transparent electrodes are coplanar, the plurality of second transparent electrodes are coplanar and a plurality of pixels are formed at portions at which the plurality of first transparent electrodes intersect with the plurality of second transparent electrodes;
• and
• the main body includes an electronic paper driver configured to,
• in a first mode, perform control so that a sensing signal is transferred to the plurality of first transparent electrodes and, in response to a touch input on the electronic paper by a user, a response signal is received from the plurality of second transparent electrodes, to thereby sense the touch input on the electronic paper, and,
• in a second mode, perform control so that image data for an image corresponding to the sensed touch input is transferred to the plurality of first transparent electrodes and a scan signal is transferred to the plurality of second transparent electrodes, to thereby display the image corresponding to the sensed touch input on the electronic paper.

A mobile terminal comprising:

• a main display;
• a touch screen positioned in front of the main display, and including:
• a liquid crystal having a first side and a second side,
• a plurality of first transparent electrodes provided at the first side of the liquid crystal and extending along a first direction, and
• a plurality of second transparent electrodes provided at the second side of the liquid crystal and extending along a second direction perpendicular to the first direction, where the plurality of first transparent electrodes are coplanar, the plurality of second transparent electrodes are coplanar and a plurality of pixels are formed at portions at which the plurality of first transparent electrodes intersect with the plurality of second transparent electrodes;
• and
• a controller configured to,
• when the main display is turned ON, perform control so that
• a sensing signal is transferred to the plurality of first transparent electrodes,
• in response to the transferred sensing signal, a response signal is received from the plurality of second transparent electrodes, to thereby sense a touch input on the touch screen,
• the main display displays information corresponding to the sensed touch input, and
• the touch screen transmits light therethrough so that the information displayed on the main display is visible through the touch screen, and
• when the main display is turned OFF, perform control so that
• a sensing signal is transferred to the plurality of first transparent electrodes,
• in response to the transferred sensing signal, a response signal is received from the plurality of second transparent electrodes, to thereby sense a touch input on the touch screen,
• a scan signal is transferred to the plurality of second transparent electrodes, and
• image data for an image corresponding to the sensed touch input is transferred to the plurality of first transparent electrodes, to thereby display the image corresponding to the sensed touch input on the touch screen.