Polarizer Touch Driver Circuit Integration for Display Panel
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Solution Overview
Problem
Conventional on-cell touch technology for display panels complicates circuits and reduces the screen-to-body ratio due to the need for a bonding area on the color filter for electrical connections between touch sensors and the touch driver circuit.
Innovation Solution
A polarizer with a touch control layer and touch sensors disposed on the same layer, where the touch driver circuit is integrated on the polarizer and connected to the touch sensors via transparent conductive wires, eliminating the need for a bonding area on the color filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bonding area is disposed on the color filter to connect touch sensors and touch driver circuit, then electrical connection is achieved, but the screen-to-body ratio is reduced and device complexity increases
Solution Approach 1:
The patent merges the touch driver circuit with the polarizer structure by disposing the touch driver circuit on the polarizer layer. This integration eliminates the need for a separate bonding area on the color filter, as the touch driver circuit is directly positioned on the polarizer where it can be electrically connected to touch sensors through conductive structures without requiring additional bonding regions.
Solution Approach 2:
The patent relocates the touch driver circuit from the color filter layer to the polarizer layer, utilizing the polarizer layer as an additional dimension for circuit integration. This spatial relocation allows the touch driver circuit to be positioned in a different layer, eliminating the need for bonding areas on the color filter and reducing overall device complexity.
2Reliability
If a bonding area is disposed on the color filter for electrical connection, then touch sensor connectivity is achieved, but the non-display area increases
Solution Approach 1:
The patent combines the touch driver circuit with the polarizer structure, allowing the touch driver circuit to be disposed on the polarizer layer. This merging eliminates the need for a separate bonding area on the color filter, as the touch driver circuit can directly connect to touch sensors through conductive structures on the polarizer, thereby reducing non-display area.
Solution Approach 2:
The patent extracts the touch driver circuit from the color filter layer and relocates it to the polarizer layer. This extraction removes the need for bonding areas on the color filter, as the touch driver circuit is now positioned on the polarizer where it can be electrically connected to touch sensors without occupying display space.
3Reliability
If touch driver circuit is integrated on the control circuit, then electrical connection is achieved, but the flexible circuit board complexity increases
Solution Approach 1:
The patent merges the touch driver circuit with the polarizer structure by disposing it on the polarizer layer. This integration reduces the number of separate components that need to be connected via the flexible circuit board, as the touch driver circuit is now positioned on the polarizer where it can be directly connected to touch sensors, thereby simplifying the flexible circuit board design.
Data Source
AI summary
The disclosure provides a polarizer and a display panel. The polarizer is disposed in the display panel and includes a body layer and a touch control layer disposed on the body layer. The touch control layer includes a plurality of touch sensors. An area of the touch control layer is greater than or equal to an area of the display area of the display panel, and the touch control layer is electrically connected to the touch driver circuit by a wire. In the display panel, a bonding area of the touch control layer and touch units are disposed on a same layer, thereby reducing a non-display area.