Invention Grant
- Patent Title: Display device and display device driving method
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Application No.: US17406433Application Date: 2021-08-19
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Publication No.: US11568812B2Publication Date: 2023-01-31
- Inventor: Eiji Iwauchi , Kazuki Sawa , Kazuhiro Yoneda
- Applicant: JOLED INC.
- Applicant Address: JP Tokyo
- Assignee: JOLED INC.
- Current Assignee: JOLED INC.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JPJP2020-148311 20200903
- Main IPC: G09G3/3233
- IPC: G09G3/3233

Abstract:
A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value and calculates a corrected luminance value from the output gradation value, using an efficiency residual ratio which is an index representing the light-emitting element deterioration degree; a current stress calculator which converts current stress amount on the light-emitting element calculated from the corrected luminance value into current stress amount when reference current flows through the light-emitting element, and calculates the accumulated current stress amount; a temperature stress calculator which converts temperature stress amount on the light-emitting element under environmental temperature into temperature stress amount on the light-emitting element under reference temperature, and calculates the accumulated current stress amount; and an efficiency residual ratio calculator which updates the efficiency residual ratio, using the accumulated current and temperature stress amounts.
Public/Granted literature
- US20220068204A1 DISPLAY DEVICE AND DISPLAY DEVICE DRIVING METHOD Public/Granted day:2022-03-03
Information query
IPC分类: