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US 12,711,892 B2Granted
Driving method for display panel and related source operational amplifier
AssigneeNovatek Microelectronics Corp.
InventorsPo-Sheng Liao, Chi-Hung Lin, Shih-Hsiang Pan
Life of this patent
Estimating the term…
Abstract
A driving method includes steps of: providing a source operational amplifier (SOP) to drive a display element; operating the SOP at a first bias current value when the display element is refreshed with a first refresh rate; and operating the SOP at a second bias current value different from the first bias current value when the display element is refreshed with a second refresh rate different from the first refresh rate.
Claims21
A driving method comprising:
- providing a source operational amplifier (SOP) to drive a display element;
- operating the SOP at a first bias current value in response to the display element being refreshed with a first refresh rate;
- and
- operating the SOP at a second bias current value different from the first bias current value in response to the display element being refreshed with a second refresh rate different from the first refresh rate,
- wherein the first refresh rate is greater than the second refresh rate, and the first bias current value is smaller than the second bias current value.
2 more elements
A driving method for driving a plurality of display elements, comprising:
- providing a source operational amplifier (SOP) to drive the plurality of display elements;
- operating the SOP at a first bias current value in response to a first display element among the plurality of display elements being refreshed with a first refresh rate;
- and
- operating the SOP at a second bias current value different from the first bias current value in response to a second display element among the plurality of display elements being refreshed with a second refresh rate different from the first refresh rate,
- wherein the first refresh rate is greater than the second refresh rate, and the first bias current value is smaller than the second bias current value.
2 more elements
A driving circuit comprising:
- a source operational amplifier (SOP), configured to drive a plurality of display elements;
- wherein the SOP is operated at a first bias current value in response to a first display element among the plurality of display elements being refreshed with a first refresh rate and operated at a second bias current value different from the first bias current value in response to a second display element among the plurality of display elements being refreshed with a second refresh rate different from the first refresh rate, wherein the first refresh rate is greater than the second refresh rate, and the first bias current value is smaller than the second bias current value.
A driving circuit comprising:
- a first source operational amplifier (SOP), configured to drive a first display element of a display panel;
- and
- a second SOP, configured to drive a second display element of the display panel,
- wherein the first SOP is operated at a first bias current value in response to the first display element being refreshed with a first refresh rate and the second SOP is operated at a second bias current value different from the first bias current value in response to the second display element being refreshed with a second refresh rate different from the first refresh rate, and
- wherein the first refresh rate is greater than the second refresh rate, and the first bias current value is smaller than the second bias current value.
2 more elements
A source operational amplifier (SOP) for driving a plurality of display elements on a display panel, the SOP comprising:
- a differential input pair for receiving an input signal of the SOP;
- a current source pair for providing an operating current for the SOP;
- and
- a first bias control circuit, configured to supply a first bias current to one of the differential input pair and the current source pair;
- wherein when a refresh rate of a display element among the plurality of display elements driven by the SOP changes, the first bias current generated by the first bias control circuit is adjusted accordingly,
- wherein the first bias current has a first value in response to the display element being refreshed with a first refresh rate, and the first bias current has a second value different from the first value in response to the display element being refreshed with a second refresh rate different from the first refresh rate, and
- wherein the first refresh rate is greater than the second refresh rate, and the first value is smaller than the second value.
4 more elements
Dependencies are inferred from the claim text.