Light Emitting Display Circuit with Integrated Low-Reflection Electrodes
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Solution Overview
Problem
The use of a polarization film in light emitting display apparatuses increases manufacturing costs, complicates the manufacturing process, and results in increased thickness, failing to meet user demands for thinner devices.
Innovation Solution
Incorporating low reflection electrodes under the main electrodes in the pixel driving circuit layer, with lateral surfaces covered by a black material, to reduce external light reflection without the need for a polarization film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarization film is attached on the light emitting display panel to prevent external light reflection, then the reflection of external light is reduced, but the manufacturing cost increases and the manufacturing process becomes complicated
Solution Approach 1:
The invention extracts and eliminates the polarization film from the display structure by replacing it with a low reflection electrode layer integrated into the pixel driving circuit. This removes the need for the separate polarization film component and its attachment process, thereby reducing manufacturing complexity while maintaining the anti-reflection function.
Solution Approach 2:
The low reflection electrode is merged with the pixel driving circuit layer, combining the electrical function (driving the display) with the optical function (reducing reflection). This integration eliminates the need for a separate polarization film and its associated manufacturing steps, resolving the contradiction between reflection prevention and manufacturing simplicity.
2Object-affected harmful factors
If a polarization film is attached on the light emitting display panel to prevent external light reflection, then the reflection of external light is reduced, but the manufacturing cost increases
Solution Approach 1:
The low reflection electrode is merged with the pixel driving circuit layer, combining the electrical function (driving the display) with the optical function (reducing reflection). This integration eliminates the need for a separate polarization film and its associated manufacturing steps, resolving the contradiction between reflection prevention and manufacturing simplicity.
Solution Approach 2:
The low reflection electrode serves multiple functions: it acts as both an electrical conductor for the pixel driving circuit and an optical element for reducing external light reflection. This multi-functionality eliminates the need for a separate polarization film, thereby reducing manufacturing cost while maintaining reflection prevention.
3Object-affected harmful factors
If a polarization film is attached on the light emitting display panel to prevent external light reflection, then the reflection of external light is reduced, but the thickness of the light emitting display apparatus increases
Solution Approach 1:
The low reflection electrode is merged with the pixel driving circuit layer, combining the electrical function (driving the display) with the optical function (reducing reflection). This integration eliminates the need for a separate polarization film and its associated manufacturing steps, resolving the contradiction between reflection prevention and manufacturing simplicity.
4Object-affected harmful factors
If low reflection electrodes are provided under main electrodes and lateral surfaces are covered by black material to reduce external light reflection, then external light reflection is minimized, but the device structure becomes more complex
Solution Approach 1:
The low reflection electrode is merged with the pixel driving circuit layer, combining the electrical function (driving the display) with the optical function (reducing reflection). This integration eliminates the need for a separate polarization film and its associated manufacturing steps, resolving the contradiction between reflection prevention and manufacturing simplicity.
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 design reduces manufacturing costs, simplifies the process, and maintains device thickness, while effectively minimizing external light reflection.
Implementation Method 1
a low reflection electrode is provided under the first main electrode, and a second low reflection electrode is provided under the second main electrode
Implementation Method 2
lateral surfaces of the low reflection electrode and the main electrode are covered by a black material
Data Source
AI summary
A light emitting display apparatus includes a substrate, a pixel driving circuit layer provided in the substrate, a planarization layer provided on the pixel driving circuit layer, and an anode electrode provided on the planarization layer, wherein the anode electrode is connected to a driving transistor included in the pixel driving circuit layer, the pixel driving circuit layer includes a first main electrode and a second main electrode provided on the first main electrode with an insulation layer therebetween, and a first low reflection electrode is provided under the first main electrode, and a second low reflection electrode is provided under the second main electrode.