Organic Light-Emitting Display Device With Partial Color Filter Transmission
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Solution Overview
Problem
Organic light-emitting display devices face challenges in achieving improved luminance and reduced chroma reduction, particularly due to limitations in color filter design and light transmittance variations across pixels.
Innovation Solution
The implementation of a multi-pixel organic light-emitting display device with specific color filters on each pixel, featuring regions with varying light transmittance to optimize luminance and chroma preservation, including a third pixel with a transmitting region allowing unfiltered light emission to enhance overall luminance while minimizing chroma reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If color filters are disposed on all pixels to display various colors, then chroma is improved, but luminance is reduced due to light absorption by color filter materials
Solution Approach 1:
The color filter structure is made non-uniform by introducing a transmitting region where the third color filter material is not disposed. This creates local quality differentiation: regions with color filter material maintain chroma, while the transmitting region maximizes luminance by allowing unfiltered light passage.
2Manufacturing precision
If color filter materials are disposed to transmit specific wavelengths, then color purity is improved, but overall light transmittance is reduced
Solution Approach 1:
The color filter structure is segmented into multiple functional regions: first and second color filter materials that provide color purity, and a third transmitting region that maximizes light transmittance. This segmentation allows each region to optimize for its specific function without compromising the other.
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 effectively improves luminance and reduces chroma reduction by allowing higher-frequency light transmission through designated regions of the color filters, resulting in enhanced display performance.
Implementation Method 1
the first through third color filters comprise first through third color filter materials which transmit light of different wavelengths, respectively
Implementation Method 2
The organic light-emitting layer may emit light at a brightness level corresponding to an electric current flowing between the first electrode and the second electrode
Data Source
AI summary
An organic light-emitting display device includes first through third pixels, wherein each of the first through third pixels comprises a first electrode, a second electrode which faces the first electrode, an organic light-emitting layer which is disposed between the first electrode and the second electrode. The first pixel includes a first color filter material, the second pixel includes a second color filter material, and the third pixel includes a third color filter material. The third pixel comprises a first transmitting region in which the third color filter material is not disposed and which is configured to allow a substantial amount of light emitted from the organic light-emitting layer of the third pixel to transmit therethrough.