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US 10,096,275 B2Granted
Display apparatus and method of processing an image signal input to a display panel
AssigneeNLT Technologies, Ltd.
InventorsKazunori Masumura, Koji Shigemura, Tetsushi Sato
Life of this patent
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Abstract
An example of display apparatus includes: a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; and a signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel.
Claims16
A display apparatus comprising:
- a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction;
- and
- a signal processor configured to:
- modulate, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and control synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel;
- detect a gradation difference between a first image signal input to a subpixel and a second image signal input to a subpixel adjacent to said subpixel, and determine whether or not the gradation difference is equal to or larger than a preset threshold;
- generate two or more data coupling clock signals having a same cycle, phase and pulse width, output the two or more data coupling clock signals as they are if determined that the gradation difference is smaller than the threshold, and control at least one of the cycle, phase or pulse width so that a rise or fall is not synchronized between the two or more data coupling clock signals to output the two or more data coupling clock signals if determined that the gradation difference is equal to or larger than the threshold;
- and
- output a coupled image signal obtained by coupling the first image signal with the second image signal using the two or more data coupling clock signals, to the display panel.
5 more elements
A display apparatus comprising:
- a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction;
- and
- a signal processor configured to:
- modulate, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and control synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel;
- detect, for each unit pixel, a gradation difference between a first image signal input to the first subpixel and a second image signal input to the second subpixel, and determine whether or not the gradation difference is equal to or larger than a preset threshold;
- generate two or more data coupling clock signals having a same cycle, phase and pulse width, output the two or more data coupling clock signals as they are if determined that the gradation difference is smaller than the threshold, and control at least one of the cycle, phase or pulse width so that a rise or fall is not synchronized between the two or more data coupling clock signals to output the two or more data coupling clock signals if determined that the gradation difference is equal to or larger than the threshold;
- and
- output a coupled image signal obtained by coupling the first image signal with the second image signal using the two or more data coupling clock signals, to the display panel.
5 more elements
A method of processing an image signal input to a display panel in which unit pixels each constituted by a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction, comprising:
- obtaining a first image signal input to the first subpixel and a second image signal input to the second subpixel;
- detecting a gradation difference between the first image signal and the second image signal for each unit pixel;
- determining whether or not the gradation difference is equal to or larger than a threshold;
- outputting two or more clock signals with a same cycle, a same phase and a same pulse width generated for coupling the first image signal with the second image signal in synchronization with one another, if determined that the gradation difference is smaller than the threshold;
- and
- controlling at least one of the cycle, phase or pulse width so that the two or more clock signals are not synchronized with one another to output the two or more clock signals, if determined that the gradation difference is equal to or larger than the threshold.
3 more elements
A display apparatus, comprising:
- a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction;
- and
- a signal processor configured to:
- control, for image data including the first pattern and image data including the second pattern, synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel;
- detect a gradation difference between a first image signal input to a subpixel and a second image signal input to a subpixel adjacent to said subpixel, and determine whether or not the gradation difference is equal to or larger than a preset threshold;
- generate two or more data coupling clock signals having a same cycle, phase and pulse width, output the two or more data coupling clock signals as they are if determined that the gradation difference is smaller than the threshold, and control at least one of the cycle, phase or pulse width so that a rise or fall is not synchronized between the two or more data coupling clock signals to output the two or more data coupling clock signals if determined that the gradation difference is equal to or larger than the threshold;
- and
- output a coupled image signal obtained by coupling the first image signal with the second image signal using the two or more data coupling clock signals, to the display panel.
5 more elements
A display apparatus, comprising:
- a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction;
- and
- a signal processor configured to:
- control, for image data including the first pattern and image data including the second pattern, synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel;
- detect, for each unit pixel, a gradation difference between a first image signal input to the first subpixel and a second image signal input to the second subpixel, and determine whether or not the gradation difference is equal to or larger than a preset threshold;
- generate two or more data coupling clock signals having a same cycle, phase and pulse width, output the two or more data coupling clock signals as they are if determined that the gradation difference is smaller than the threshold, and control at least one of the cycle, phase or pulse width so that a rise or fall is not synchronized between the two or more data coupling clock signals to output the two or more data coupling clock signals if determined that the gradation difference is equal to or larger than the threshold;
- and
- output a coupled image signal obtained by coupling the first image signal with the second image signal using the two or more data coupling clock signals, to the display panel.
5 more elements
Dependencies are inferred from the claim text.