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US 10,762,835 B2Granted
Display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsJintaek Choi, Kipyo Hong, Jooyoung An
Life of this patent
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Abstract
The present disclosure a display device includes: a display panel including subpixels displaying an image; and a life controller controlling at least any one of a compensation rate and a delay rate of the subpixels on the basis of usage data obtained by calculating usage of the display panel and life data of the subpixels.
Claims11
A display device, comprising:
- a display panel including subpixels configured to display an image;
- and
- a life controller configured to control at least any one of a compensation rate and a delay rate of the subpixels on the basis of current usage data obtained by calculating current usage of the display panel and life data of the subpixels,
- wherein the life controller includes:
- a usage calculation unit configured to calculate the current usage data of the display panel;
- a life reference unit configured to store the life data of the subpixels, the life data including information on positions and life information of the subpixels;
- and
- a rate matching unit configured to compare the current usage data with the life data of the life reference unit and to control the at least any one of the compensation rate and the delay rate such that the life of the subpixels is reduced at the same rate,
- wherein the life controller controls at least any one of the compensation rate and the delay rate by multiplying a constant “α” to the current usage data “I”, and the constant a may be calculated by Equation 1 below:
- α=(tlife,ref/τ)n/I [Equation 1]
- tlife=τ·I−n, I−n:
- usage equation, τ:
- life Ref
- where tlife indicates time required for luminance to decrease, and the life Ref is set to a constant obtained by sensing the life of an actual element.
11 more elements
A method for driving a display device, the method comprising:
- storing life data of subpixels of a display panel together with corresponding position;
- calculating a current usage data of the display panel when an image is displayed on the display unit;
- and
- controlling at least any one of a compensation rate and a delay rate of the sub-pixels on the basis of the current usage data and life data of the sub-pixels,
- wherein, in the controlling of at least any one of the compensation rate and the delay rate of the sub-pixels on the basis of the current usage data and life data of the sub-pixels, the compensation rate and the delay rate are controlled by multiplying a constant “α” to the current usage data “I”, wherein the constant a may be calculated by equation 1 below:
- α=(tlife,ref/τ)n/I [Equation 1]
- tlife=τ·I−n, I−n:
- usage equation, τ:
- life Ref.
- where, tlife indicates time required for luminance to decrease, and the life Ref is set to a constant obtained by sensing the life of an actual element.
7 more elements
Dependencies are inferred from the claim text.