Electroluminescent display device and method for driving same
AssigneeLG Display Co., Ltd.
InventorsSo Jeong KIM, Nam Hun OH
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Abstract
An electroluminescent display device includes a display panel including a plurality of pixels each including a light-emitting element, a display brightness value adjuster configured to output brightness data with different values according to user inputs to adjust screen luminance of the display panel, a duty adjuster configured to adjust an emission duty of the light-emitting element according to the brightness data, and a power adjuster configured to adjust a low-level source voltage to be applied to the pixels within a preset power supply voltage range according to the brightness data, wherein the emission duty of the light-emitting element gradually increases from 0% to an upper limit set to be less than 100%.
Claims20
An electroluminescent display device, comprising:
- a display panel including a plurality of pixels each including a light-emitting element;
- a display brightness value adjuster configured to output brightness data with different values according to user inputs to adjust screen luminance of the display panel;
- a duty adjuster configured to adjust an emission duty of the light-emitting element according to the brightness data;
- and
- a power adjuster configured to adjust a low-level source voltage to be applied to the pixels according to the brightness data,
- wherein the screen luminance includes a first luminance section and a second luminance section having luminance higher than luminance of the first luminance section, and
- wherein the emission duty of the light-emitting element gradually increases to an upper limit set to be less than 100% in the first luminance section and is fixed to the upper limit in the second luminance section.
An electroluminescent display device, comprising:
- a display panel including a plurality of pixels each including a light-emitting element;
- a display brightness value adjuster configured to output brightness data with different values according to user inputs to adjust screen luminance of the display panel;
- a duty adjuster configured to adjust an emission duty of the light-emitting element according to the brightness data;
- and
- a power adjuster configured to adjust a low source voltage to be applied to the pixels within a preset power supply voltage range according to the brightness data,
- wherein the emission duty of the light-emitting element gradually increases from 0% to an upper limit set to be less than 100%, and the low-level source voltage is fixed to a highest level within the power supply voltage range in a low luminance section of the screen luminance.
A method for driving an electroluminescent display device having a display panel including a plurality of pixels each including a light-emitting element, the method comprising;
- outputting brightness data with different values according to user inputs to adjust screen luminance of the display panel;
- adjusting an emission duty of the light-emitting element according to the brightness data;
- and
- adjusting a low source voltage to be applied to the pixels according to the brightness data,
- wherein the screen luminance includes a first luminance section and a second luminance section having luminance higher than luminance of the first luminance section, and
- wherein the emission duty of the light-emitting element gradually increases to an upper limit set to be less than 100% in the first luminance section and is fixed to the upper limit in the second luminance section.
A method for driving an electroluminescent display device having a display panel including a plurality of pixels each including a light-emitting element, the method comprising:
- outputting brightness data with different values according to user inputs to adjust screen luminance of the display panel;
- adjusting an emission duty of the light-emitting element according to the brightness data;
- and
- adjusting a low-level source voltage to be applied to the pixels within a preset power supply voltage range according to the brightness data,
- wherein the emission duty of the light-emitting element gradually increases from 0% to an upper limit set to be less than 100%, and the low-level source voltage is fixed to a highest level within the power supply voltage range in a low luminance section of the screen luminance.
Dependencies are inferred from the claim text.