OLED Touch Display Panel Wiring Integration
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Solution Overview
Problem
Conventional OLED touch display panels face challenges with high material costs and complex manufacturing processes due to the need for additional wirings, which occupy significant space and reduce sensing accuracy and linearity.
Innovation Solution
The proposed high-accuracy OLED touch display panel structure integrates wiring segments on a thin film transistor and wiring layer, eliminating the need for wirings on the sensing electrode layer, thereby reducing the gap distance between sensing touch patterns and enhancing sensing linearity and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wirings are arranged on the sensing electrode layer for the sensing touch pattern structure, then the sensing touch pattern can be formed, but the gap distance between sensing touch patterns increases, reducing sensing linearity and accuracy
Solution Approach 1:
The patent merges the sensing electrode layer with the thin film transistor and wiring layer, integrating the sensing function directly into the display driving structure. This eliminates the need for separate wirings on the sensing electrode layer, reducing gap distance and improving sensing linearity and accuracy while simplifying the overall device structure.
2Manufacturing precision
If wirings are arranged on the sensing electrode layer, then the sensing touch pattern structure can be completed, but the dead area increases and sensing linearity decreases
Solution Approach 1:
By combining the sensing electrode layer with the thin film transistor and wiring layer, the patent eliminates separate wirings that would occupy space on the sensing electrode layer. This integration reduces the dead area and improves sensing linearity by minimizing the space occupied by wiring structures.
3Adaptability or versatility
If additional touch panel is bonded to the display unit, then the touch panel function is achieved, but the weight and thickness increase
Solution Approach 1:
The patent integrates the touch sensor functionality directly into the display unit by merging the sensing electrode layer with the thin film transistor and wiring layer. This eliminates the need for a separate bonded touch panel, thereby reducing the overall weight and thickness while maintaining full touch panel functionality.
4Adaptability or versatility
If additional touch panel is bonded to the display unit, then the touch panel function is achieved, but the light penetration rate decreases and reflectance increases
Solution Approach 1:
By integrating the sensing electrode layer with the thin film transistor and wiring layer within the display unit, the patent eliminates the need for a separate bonded touch panel. This reduces the number of interfaces and layers that light must pass through, thereby improving light penetration rate and reducing reflectance while maintaining touch panel functionality.
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 configuration reduces the 'dead area' and increases sensing accuracy by minimizing the space occupied by wirings, simplifying the manufacturing process, and lowering material costs.
Implementation Method 1
the electrons and electric holes enter the light-emitting layer 223 with fluorescent characteristics and then are combined to produce excited photons, which immediately release energy and return to the ground state. The released energy will generate different colors of light based on different luminescent materials
Implementation Method 2
the capacitive touch panel is employed to convert the capacitance change caused by the arranged transparent electrodes combined with the static electricity with respect to human body into current or voltage, so as to detect the touch coordinates
Data Source
AI summary
A high-accuracy OLED touch display panel structure includes an upper substrate, a lower substrate, an OLED layer configured between the upper and lower substrates, a sensing electrode layer, a thin film transistor and wiring layer, a cathode layer, and an anode layer. The sensing electrode layer has a plurality of sensing conductor lines for sensing an approaching external object. The thin film transistor and wiring layer includes a plurality of gate lines, a plurality of source lines, and a plurality of wirings. The plurality of sensing conductor lines are disposed corresponding to positions of the plurality of gate lines and the plurality of source lines.