Functional Panel Pixel Circuit for Display and Proximity Sensing
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Solution Overview
Problem
Existing imaging panels and display devices are not highly convenient, useful, or reliable, lacking in functionality and efficiency in image processing and data handling.
Innovation Solution
The implementation of driver circuits, pixel circuits, and conductive films that allow for dynamic control of pixel states, enabling non-display states, imaging, and efficient signal processing through correlated double sampling methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pixel circuit is supplied with selection signals and image signals for display, then display functionality is achieved, but the pixel cannot simultaneously perform imaging or proximity sensing functions
Solution Approach 1:
The pixel circuit is designed to perform multiple functions including display, imaging, and proximity sensing by selectively responding to different signal combinations. The same pixel circuit structure handles display data during display periods and imaging data during imaging periods, eliminating the need for separate dedicated circuits for each function.
Solution Approach 2:
The pixel circuit dynamically switches between different operational modes (display mode, imaging mode, proximity sensing mode) based on the timing signals received from driver circuits. This dynamic reconfiguration allows the circuit to adapt its function in real-time without physical reconfiguration.
2Adaptability or versatility
If imaging panels use traditional photoelectric conversion elements with grid-like formations, then signal supply is achieved, but proximity sensing capability and light emission functionality are lost
Solution Approach 1:
The pixel circuit serves as a universal functional unit that can perform display, imaging, and proximity sensing functions. By maintaining the essential photoelectric conversion capability while adding control logic for multiple functions, the system achieves versatility without sacrificing the reliable signal generation that photoelectric elements provide.
Solution Approach 2:
The pixel circuit acts as an intermediary between the photoelectric conversion element and the various functional outputs (display, imaging, proximity sensing). It receives raw signals from the photoelectric element and conditionally processes them into different functional outputs based on control signals, preserving signal reliability while enabling multiple functions.
3Productivity
If driver circuits supply selection signals for pixel control, then display control is achieved, but integrated imaging and sensing operations cannot be performed simultaneously
Solution Approach 1:
The driver circuits operate in periodic cycles, alternating between display periods and imaging periods by supplying different selection signals at different times. During display periods, pixels receive display data; during imaging periods, pixels perform imaging or proximity sensing. This periodic time-division multiplexing allows integrated operations without requiring simultaneously complex driver circuits.
Solution Approach 2:
The driver circuits dynamically adjust their output signals based on the current operational phase. The same driver circuit structure supplies display control signals during display periods and imaging control signals during imaging periods, achieving operational efficiency through dynamic signal switching rather than through complex simultaneous multi-function control.
Data Source
AI summary
A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a first pixel and a second pixel, the first pixel comprises a first pixel circuit and a light-emitting element, the second pixel comprises a second pixel circuit and a photodiode. The first pixel circuit is configured to hold a first state on the basis of a control signal comprising a first level, a second state on the basis of a control signal comprising a second level, and a third state on the basis of an image signal. The light-emitting element does not perform light emission in the first state, is configured to perform light emission in the second state, and is configured to perform light emission on the basis of the image signal in the third state.