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US 2026/0229181 A1Published application
Display device
AssigneeLG Display Co., Ltd.
InventorsJinhun KIM, Juhee EUN, Juhwan BAEK, Yeonjin SA
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Abstract
The display device is configured to: upon receiving a power-off command, to change an operation frequency of a pixel, and to perform a refresh frame operation of refreshing the pixel, based on the changed operation frequency; and after the refresh frame operation, execute a power-off sequence. In this way, a FOS (front of screen) problem that may occur at a power-off time may be suppressed.
Claims20
A display device comprising:
- a light-emitting element;
- a driving transistor configured to drive the light-emitting element;
- a storage capacitor having a first electrode connected to a gate electrode of the driving transistor and a second electrode connected to a source electrode of the driving transistor;
- a compensation capacitor having the first electrode connected to the second electrode of the storage capacitor and a source electrode of the driving transistor;
- and
- at least one transistor configured to transmit at least one of a reference voltage, a reset voltage, and a high potential driving voltage to a pixel,
- wherein the display device is configured to:
- upon receiving a power-off command, change an operation frequency of the pixel to a changed operation frequency, and to perform a refresh frame operation of refreshing the pixel, based on the changed operation frequency;
- and
- after the refresh frame operation, execute a power-off sequence.
7 more elements
A display device comprising a display panel including a plurality of pixels,
- wherein each of the plurality of pixels includes:
- a light-emitting element;
- a driving transistor configured to drive the light-emitting element;
- a storage capacitor having a first electrode connected to a gate electrode of the driving transistor and a second electrode connected to a source electrode of the driving transistor;
- a compensation capacitor having a first electrode connected to a second electrode of the storage capacitor and the source electrode of the driving transistor;
- a first transistor having a first electrode receiving a data voltage and a second electrode connected to the gate electrode of the driving transistor and the first electrode of the storage capacitor;
- a second transistor having a first electrode receiving a reference voltage a second other electrode connected to the gate electrode of the driving transistor and the first electrode of the storage capacitor;
- a third transistor having a first electrode connected to an anode electrode of the light-emitting element and a second electrode receiving a reset voltage;
- a fourth transistor having a first electrode receiving a high potential driving voltage and a second electrode connected to a drain electrode of the driving transistor;
- a fifth transistor having a first electrode connected to the source electrode of the driving transistor and a second electrode connected to the anode electrode of the light-emitting element;
- and
- a sixth transistor having a first electrode receiving the reference voltage and a second electrode connected to the second electrode of the compensation capacitor,
- wherein the display device is configured to:
- upon receiving a power-off command, change an operation frequency of the pixel to a changed operation frequency, and to perform a refresh frame operation of refreshing a pixel, based on the changed operation frequency;
- and
- after the refresh frame operation, execute a power-off sequence.
13 more elements
Dependencies are inferred from the claim text.