US 9,958,983 B2Granted

Mobile terminal and method for controlling the same

AssigneeLG Electronics Inc.

InventorsDongchul Jin, Haengchul Kwak, Youngsok Lee, Yehan Ahn

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Abstract

A mobile terminal includes a display; a touch sensor coupled to the display, the touch sensor including a first sensor and a second sensor; a driving unit configured to supply power to drive the display; and a touch controller configured to: cause the driving unit to enter an inactive state when a lighting of the display is turned off; recognize a touch input applied to the display by sensing, via the first or second sensor, the touch input applied while the lighting of the display is off; cause the driving unit to enter an active state in response to the touch input, the active state maintained while the lighting of the display is on; and obtain touch coordinates of the touch input using input from both the first sensor and the second sensor together when the driving unit enters the active state.

Claims15

Dependent claims

A mobile terminal comprising:

a display including a touch sensor having a first sensor and a second sensor, wherein the display is configured as an in-cell touch type touch screen;
a touch controller configured to detect a touch input received at the display in a state that a lighting of the display is turned off;
a driving unit including a driving integrated circuit (IC) and a one time programmable (OTP) memory and capable of supplying power to drive the display, wherein the OTP memory stores setting information associated with an initialization operation of the driving unit;
a converter unit capable of supplying an output voltage to the driving unit;
an input/output port directly connecting the touch controller and the converter unit;
and
a controller configured to control the mobile terminal in combination with at least one of the display, the touch controller, or the driving unit,
wherein the driving unit, the converter unit, and the controller are in an inactive state when the lighting of the display is turned off,
wherein the touch controller is capable of:
sensing the touch input received at the display using the first sensor in the state that the lighting of the display is turned off and the controller is in the inactive state;
generating a signal for activating the converter unit when the touch input is sensed;
transmitting the generated signal to the converter unit via the input/output port;
causing the converter unit to enter an active state from the inactive state such that the converter unit performs the initialization operation using the setting information stored in the OTP memory;
applying the output voltage to the driving unit via the converter unit;
causing the driving unit to be in an active state in response to the applied output voltage;
and
detecting touch coordinates of the touch input using the first and second sensors together, and
wherein the controller remains in the inactive state when the converter unit and the driving unit are activated in response to the touch input.

15 more elements

A method for controlling a mobile terminal including a display configured as an in-cell touch type touch screen having a first touch sensor, a second touch sensor, a touch controller, and a driving unit,

wherein the mobile terminal further includes:
a controller configured to control the mobile terminal in combination with at least one of the display, the touch controller, or the driving unit;
a converter unit capable of supplying an output voltage to the driving unit;
and
an input/output port directly connecting the touch controller and the converter unit, and
wherein the driving unit, the converter unit, and the controller are in an inactive state when a lighting of the display is turned off,
wherein the driving unit includes a driving integrated circuit (IC) and a one time programmable (OTP) memory storing setting information associated with an initialization operation of the driving unit,
the method comprising:
sensing, by the touch controller, a touch input received at the display in a state that the lighting of the display is turned off and the controller is in the inactive state, using the first touch sensor;
generating a signal for activating the converter unit when the touch input is sensed;
transmitting the generated signal to the converter unit;
causing the converter unit to enter an active state from the inactive state such that the converter unit performs the initialization operation using the setting information stored in the OTP memory;
applying the output voltage to the driving unit via the converter unit;
causing, by the touch controller, the driving unit to be in an active state in response to the applied output voltage;
and
detecting coordinates of the touch input using the first and second touch sensors together,
wherein the controller remains in the inactive state when the converter unit and the driving unit are activated in response to the touch input.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/952,695Filed 25 Nov 2015
Priority: KR 10-2014-016554025 Nov 2014
Published: US 2016/0147371 A126 May 2016
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06F 1/3265
Power saving in peripheral device: power saving in display device
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G06F 3/04166
Control or interface arrangements specially adapted for digitisers: details of scanning methods, e.g. sampling time, grouping of sub areas or time…
G06F 3/04883
Using a touch-screen or digitiser, e.g. input of commands through traced gestures: for inputting data by handwriting, e.g. gesture or text