Combined Display Panel Circuit for Touch and Image Control
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Solution Overview
Problem
The complexity and cost of designing touch capable display devices are increased by the need for separate hardware for touch input recognition and image control, making it difficult to create ultra-thin form factor devices.
Innovation Solution
A combined panel circuit that integrates electrode arrangements in conductive layers to both update images and sense touch inputs by selectively applying different voltages, eliminating the need for separate touch digitizer and display driver hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate hardware is used for touch input recognition and image control, then functionality is provided reliably, but device complexity and cost increase
Solution Approach 1:
The patent combines separate touch digitizer hardware and display driver hardware into a single integrated display device. The display device includes a display panel with electrode arrangements that serve both for driving display pixels and for sensing touch inputs, eliminating the need for separate hardware components while maintaining both functionalities.
Solution Approach 2:
The display device is designed to perform multiple functions using the same hardware components. The electrode arrangements in the display panel are used dually for both display driving purposes and touch sensing purposes. The same controller circuitry manages both image data transmission and touch input recognition, making the device universal in its functionality.
2Reliability
If separate hardware is used for touch input recognition and image control, then functionality is provided reliably, but cost increases
Solution Approach 1:
The patent combines separate touch digitizer hardware and display driver hardware into a single integrated display device. The display device includes a display panel with electrode arrangements that serve both for driving display pixels and for sensing touch inputs, eliminating the need for separate hardware components while maintaining both functionalities.
3Reliability
If separate hardware is used for touch input recognition and image control, then functionality is provided reliably, but device thickness increases
Solution Approach 1:
The patent combines separate touch digitizer hardware and display driver hardware into a single integrated display device. The display device includes a display panel with electrode arrangements that serve both for driving display pixels and for sensing touch inputs, eliminating the need for separate hardware components while maintaining both functionalities.
Solution Approach 2:
The touch sensing functionality is nested within the display panel structure itself. The electrode arrangements for touch sensing are integrated into the same layers and structure as the display electrodes, with touch sensing electrodes positioned between the display electrodes and the display particles. This nesting allows touch sensing capability to be embedded within the display thickness rather than adding separate external hardware.
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 approach simplifies the construction of display devices, reduces costs, and allows for thinner designs by enabling dual-purpose functionality within a single circuit.
Implementation Method 1
The display particles may be manipulated under the influence of a threshold voltage applied to the electrode arrangement that is sufficient to cause the display particles to transition between states
Implementation Method 2
Sensing of capacitance indicative of touch inputs may occur under the influence of a different voltage that is not sufficient to manipulate the display particles
Data Source
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AI summary
Combined display panel circuit techniques are described herein. In one or more implementations, a combined panel circuit of a display device is configured to enable functionality for both recognition of touch inputs and functionality to update images output by the display device. The combined panel circuit, for instance, may include an electrode arrangement in conductive layers that sandwiches display particles used to form images for the display device. The display particles may be manipulated under the influence of a threshold voltage applied to the electrode arrangement that is sufficient to cause the display particles to transition between states. Capacitance sensing indicative of touch inputs may occur under the influence of a different voltage that is not sufficient to manipulate the display particles. The different voltages are selectively applied at different times to update displayed images through manipulation of the display particles and sense capacitance to recognize touch inputs.