Pixel Column Holding Circuit for Stable Multiplexed Display Driving
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Solution Overview
Problem
Existing display devices face issues where pixel columns maintain incorrect display results due to data signal leakage or interference from other signals, leading to inconsistent display outcomes.
Innovation Solution
Implementing a multiplexer circuit and a holding circuit to provide data signals to pixel columns during specific periods and reference signals to maintain previous frame period display results, ensuring pixel columns retain their display states without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multiplexer circuit is used to provide data signals to pixel columns during specific periods, then the display device can efficiently manage multiple pixel columns, but the data signal of the previous frame period may be changed by leakage or interference from other data signals
Solution Approach 1:
A holding circuit is introduced as an intermediary component between the multiplexer circuit and the pixel columns. This holding circuit receives and stores the reference signal during the first period, then maintains this signal during the second period when the multiplexer provides data signals to other pixel columns. The holding circuit acts as a buffer that isolates the pixel column from direct exposure to potential leakage or interference from other data signals, thereby resolving the contradiction between display efficiency and signal stability.
2Ease of operation
If the multiplexer provides data signal to the first pixel column during the first period, then the first pixel column can be driven properly, but the second pixel column adjacent to the first pixel column may experience interference from the data signal
Solution Approach 1:
The patent divides the signal path into separate segments: the multiplexer circuit, the holding circuit, and the pixel columns. By segmenting the signal transmission path and introducing the holding circuit as a separate functional unit, the system can provide data signals to the first pixel column during the first period while the second pixel column receives a stable reference signal from the holding circuit during the second period, thereby preventing interference between adjacent pixel columns.
3Device complexity
If the display device uses a simple architecture without holding circuit, then the device complexity is reduced, but the display result cannot be maintained consistently during the previous frame period
Solution Approach 1:
The holding circuit performs preliminary action by storing the reference signal during the first period before the second period begins. This preliminary storage of the reference signal ensures that when the multiplexer switches to provide data signals to other pixel columns during the second period, the original pixel column still has a stable reference signal available, thereby maintaining display result consistency without requiring complex real-time signal management.
Data Source
AI summary
A display device and an operating method for the display device are provided. The display device includes a pixel array, a multiplexer circuit, and a holding circuit. The pixel array includes a first pixel column and a second pixel column. The multiplexer circuit provides a first data signal to the first pixel column during a first period and provides a second data signal to the second pixel column during a second period. The holding circuit provides a reference signal to the second pixel column during the first period to maintain a display result of the second pixel column during a previous period and provides the reference signal to the first pixel column during the second period to maintain a display result of the first pixel column during the first period.