17810141. DISPLAY DEVICE AND METHOD OF DRIVING THE SAME simplified abstract (Samsung Display Co., Ltd.)
Contents
DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
Organization Name
Inventor(s)
Jung Hwan Hwang of Seongnam-si (KR)
Hyun Joon Kim of Hwaseong-si (KR)
Jun Ki Jeong of Yongin-si (KR)
DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 17810141 titled 'DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
Simplified Explanation
The patent application describes a display device that includes PAM (Pulse Amplitude Modulation) and PWM (Pulse Width Modulation) data lines, and sub-pixels connected to these data lines. The sub-pixels consist of a light emitting element, three pixel drivers, and a node.
- The first pixel driver supplies a control current based on the PAM data voltage to the node.
- The second pixel driver generates a driving current based on the PWM data voltage.
- The third pixel driver adjusts the period during which the driving current is supplied to the light emitting element based on the voltage of the node.
The driving current's peak value is smaller when the sub-pixel emits light corresponding to a low gray level region compared to a high gray level region.
Potential applications of this technology:
- Display devices such as televisions, computer monitors, and mobile screens.
- Virtual reality and augmented reality headsets.
- Automotive displays and infotainment systems.
Problems solved by this technology:
- Provides a more efficient and accurate control of the driving current for different gray levels, resulting in improved image quality.
- Reduces power consumption and extends the lifespan of the display device.
Benefits of this technology:
- Enhanced image quality with better contrast and color accuracy.
- Lower power consumption, leading to energy savings.
- Longer lifespan of the display device, reducing the need for frequent replacements.
Original Abstract Submitted
A display device includes PAM data lines receiving PAM and PWM data voltages, and sub-pixels connected to the PAM and PWM data lines. A sub-pixel includes a light emitting element, a first pixel driver to supply a control current according to one of the PAM data voltages to a node, a second pixel driver to generate a driving current according to one of the PWM data voltages, and a third pixel driver to adjust a period during which the driving current is supplied to the light emitting element according to a voltage of the node. A peak current value of the driving current when the sub-pixel emits a light corresponding to a low gray level region is smaller than a peak current value of the driving current when the sub-pixel emits a light corresponding to a high gray level region higher than the low gray level region.
