Light-emitting Panel Grid Wiring for Regional Brightness Control
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Solution Overview
Problem
Existing light-emitting panels require a large number of signal lines for regional brightness control, leading to complex wiring and limited ability to achieve independent brightness control of each light-emitting unit, which hinders the increase in the number of regions and image display quality.
Innovation Solution
A light-emitting panel design featuring a grid arrangement of data lines and scan lines, where each light-emitting unit is connected between two power lines, utilizing transistors to control pulse width modulation signals for brightness adjustment, reducing the total number of signal lines required while enabling regional brightness control and increased pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large number of signal lines are used for regional brightness control, then independent brightness control of each light-emitting unit is achieved, but wiring becomes complicated and device complexity increases
Solution Approach 1:
The patent segments the brightness control function by dividing light-emitting units into multiple regions, where each region is controlled by a separate control line. This allows independent brightness control of different regions without requiring individual control lines for each light-emitting unit, thereby reducing wiring complexity while maintaining regional brightness control capability.
Solution Approach 2:
The patent introduces a two-dimensional addressing scheme using row and column control lines intersecting at specific points. By adding the spatial dimension of line intersections, the system can address individual light-emitting units or regions using combinations of control lines rather than dedicated lines for each unit, significantly reducing the total number of signal lines required.
2Manufacturing precision
If the number of light-emitting units is increased, then image display quality and pixel density are improved, but the number of signal lines required increases
Solution Approach 1:
The control lines in the patent serve multiple functions: they can individually control different regions, can be combined to address specific light-emitting units through intersection points, and can dynamically enable or disable different zones. This multi-functionality allows the same set of control lines to manage a larger number of light-emitting units without proportionally increasing the signal line count, thereby improving pixel density while controlling the quantity of signal lines.
3Manufacturing precision
If regional brightness control is implemented, then image display quality is enhanced, but power consumption increases
Solution Approach 1:
The patent implements local quality control by allowing different regions to have different brightness levels based on their specific requirements. By controlling only the regions that need adjustment rather than the entire display uniformly, the system enhances image display quality in critical areas while minimizing power consumption compared to illuminating all regions at maximum brightness.
Solution Approach 2:
The patent applies partial action by enabling brightness control only for specific regions or zones that require it, rather than uniformly controlling all light-emitting units. This selective approach allows the system to achieve the necessary image display quality in important areas while avoiding the excessive power consumption that would result from controlling the entire display at high brightness levels.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for a smaller number of signal lines to control a larger number of light-emitting units, enhancing contrast and image display quality by enabling more regions with improved brightness control and reduced power consumption.
Implementation Method 1
at least one light-emitting element (112). The at least one light-emitting element (112) is electrically connected between the first power line (PL1) and the second power line (PL2)
Implementation Method 2
A first terminal of the first transistor (T1) is electrically connected to the data line (DL), a second terminal of the first transistor (T1) is electrically connected to a control terminal of the second transistor (T2), and a control terminal of the first transistor (T1) is electrically connected to the scan line (SL)
Data Source
AI summary
Light-emitting panel, driving method, fabricating method, and display device are provided. The light-emitting panel includes a plurality of light-emitting units arranged in an array. Each light-emitting unit includes a light-emission control module and at least one light-emitting element. The at least one light-emitting element is electrically connected to the light-emission control module. The light-emitting panel also includes a plurality of data lines arranged in a first direction. Each data line is electrically connected to light-emission control modules of light-emitting units that are arranged in a second direction. The second direction intersects the first direction. The light-emitting panel also includes a plurality of scan lines arranged in the second direction. Each scan line of the plurality of scan lines is electrically connected to light-emission control modules of light-emitting units that are arranged in the first direction. The light-emitting panel also includes a first power line and a second power line.