Display Panel Voltage Segmentation for Charging Efficiency
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Solution Overview
Problem
The existing four-domain pixel architecture in liquid crystal display panels suffers from low charging efficiency due to large voltage jumps between adjacent data voltages, which affects the improvement of viewing angle characteristics.
Innovation Solution
A compensation method for a display panel that involves controlling first sub-pixels to load first data voltages in a first period and second sub-pixels to load second data voltages in a second period, where the voltage intervals for both sets of data voltages do not overlap, thereby reducing voltage jumps and improving charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If adjacent sub-pixels are set to higher and lower gray levels to reduce side-view brightness, then viewing angle characteristics are improved, but data voltage jumps become large causing low charging efficiency
Solution Approach 1:
The patent segments the data voltage application process into two distinct time intervals: a first time interval for applying first data voltages to first sub-pixels, and a second time interval for applying second data voltages to second sub-pixels. This temporal segmentation prevents simultaneous voltage applications that would cause large voltage jumps, thereby improving charging efficiency while maintaining the gray level differentiation needed for viewing angle improvement.
Solution Approach 2:
The patent applies first data voltages to first sub-pixels before applying second data voltages to second sub-pixels. This preliminary action ensures that the first sub-pixels are fully charged at their target voltage level before the second sub-pixels receive their voltage application, preventing voltage jump issues and ensuring proper charging efficiency for both sub-pixel types.
2Measurement precision
If four-domain pixel architecture is used to achieve high resolution and transmittance, then display quality is improved, but side brightness increases causing viewing angle deterioration
Solution Approach 1:
The patent applies different data voltage levels to different sub-pixels within the same pixel structure. Specifically, first sub-pixels receive first data voltages while second sub-pixels receive second data voltages, creating local quality differences in voltage application. This allows the four-domain pixel architecture to maintain its high resolution and transmittance advantages while controlling side brightness through localized voltage differentiation.
3Illumination intensity
If data voltages are applied alternately to adjacent sub-pixels, then viewing angle characteristics are improved, but voltage jumps between adjacent data voltages become large reducing charging efficiency
Solution Approach 1:
The patent segments the data voltage application process into two distinct time intervals: a first time interval for applying first data voltages to first sub-pixels, and a second time interval for applying second data voltages to second sub-pixels. This temporal segmentation prevents simultaneous voltage applications that would cause large voltage jumps, thereby improving charging efficiency while maintaining the gray level differentiation needed for viewing angle improvement.
Solution Approach 2:
The patent employs periodic action by alternating between applying first data voltages to first sub-pixels and second data voltages to second sub-pixels in a sequential manner. This periodic application pattern ensures that voltage applications are staggered rather than simultaneous, reducing voltage jumps and improving charging efficiency while maintaining the alternating sub-pixel structure for viewing angle improvement.
Data Source
AI summary
A display panel includes a plurality of data lines, a plurality of first sub-pixels and at least one second sub-pixel connected to the same data line. The at least one second sub-pixels are disposed between the plurality of the first sub-pixels, and compensation method of the display panel includes controlling each of the first sub-pixels to load a corresponding one of first data voltages in a first period, wherein a plurality of the first data voltages are in a first voltage interval and controlling each of the at least one second sub-pixel to load a corresponding one of second data voltages in a second period, wherein the plurality of second data voltages are in a second voltage interval, the second period does not overlap with the first period, and the second voltage interval does not overlap with the first voltage interval.