Integrated Light and Touch Control Component for Displays
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Solution Overview
Problem
Current display screens integrated with touch functions can only achieve short-range control, failing to meet the demands of advanced human-computer interaction, particularly for large-size displays.
Innovation Solution
Integration of a control component with both light control and touch control structures on a substrate, including a photosensitive circuit and switch transistors, enabling simultaneous detection of light and touch inputs, and utilizing a shared drive structure for time-sharing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display screen is integrated with touch functions only, then touch control capability is achieved, but control range is limited to short-distance only
Solution Approach 1:
The patent combines light control structure and touch control structure into a single integrated control component. The light control structure includes photosensitive circuits with signal input lines and signal output lines, while the touch control structure includes transmitting electrodes and receiving electrodes. Both structures share common substrate and electrode layers, enabling the display screen to respond to both light signals (remote control) and touch inputs (short-range control) within the same device architecture.
Solution Approach 2:
The control component is designed to perform multiple functions: it can detect light signals for remote control operations and detect touch inputs for short-range control operations. The receiving electrodes serve dual purposes as both touch detection elements and signal output lines for the light control structure, enhancing the versatility of the display screen without requiring separate independent systems.
2Adaptability or versatility
If light control structure and touch control structure are integrated on the same substrate, then both functions are achieved, but signal interference may occur
Solution Approach 1:
The control component is divided into distinct functional regions: the light control structure with photosensitive circuits, switch transistors, and signal lines; and the touch control structure with transmitting and receiving electrodes. Although integrated on the same substrate, these structures are spatially segmented and functionally separated, allowing independent operation and reducing signal interference between the two control modes.
Solution Approach 2:
The patent employs time-division multiplexing in the drive structure, where the light control structure and touch control structure are activated in alternating time periods. The drive structure includes scan lines and signal lines that are selectively activated for light control operations or touch control operations, ensuring that signals from different control modes do not interfere with each other during simultaneous operation.
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
Enables both short-range touch and remote light control functions on a single display screen, enhancing interaction capabilities, especially for large-size displays, by integrating light control and touch functions within the same structure.
Implementation Method 1
the light control structure includes a signal input line, a signal output line, and a photosensitive circuit electrically connected between the signal input line and the signal output line
Data Source
AI summary
The present application provides a control component, a display screen, and a control device. The control component is integrated in a display screen and includes a substrate and a light control structure and a touch control structure arranged side by side on the substrate; the light control structure includes a signal input line, a signal output line, and a photosensitive circuit electrically connected between the signal input line and the signal output line; the touch control structure includes a plurality of receiving electrodes and a plurality of transmitting electrodes; and the receiving electrodes are multiplexed as the signal output line.