OLED Display Panel Sub-Pixel Color Resistor Design
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Solution Overview
Problem
Existing OLED display panels face efficiency and power consumption issues while trying to achieve higher resolution and color gamut, leading to decreased brightness and reduced service life.
Innovation Solution
A display panel design featuring an array substrate with sub-pixel cycle units and a color filter layer containing color resistor units, where adjacent sub-pixels of the same color are spaced by different colors, and color resistors are strategically placed to increase color gamut and brightness without increasing current to the organic light-emitting diodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of TFTs in pixel circuit is increased to achieve higher resolution, then resolution is improved, but aperture ratio of pixels is decreased
Solution Approach 1:
The pixel circuit is segmented into multiple TFTs distributed across the substrate, with each TFT controlling specific sub-pixels. This segmentation allows for higher resolution through increased pixel count while managing the aperture ratio challenge through optimized spatial distribution of circuit elements.
Solution Approach 2:
The patent transitions from traditional planar pixel arrangements to a more complex spatial configuration where sub-pixels of different colors are interleaved in a specific pattern (RGBRGB sequence). This dimensional reorganization optimizes both resolution and aperture ratio by efficiently utilizing the substrate area.
2Quantity of substance
If a color filter is added to achieve higher color gamut, then color gamut is improved, but brightness of display terminal is decreased
Solution Approach 1:
Color resistors are selectively placed only in specific sub-pixels rather than uniformly across all pixels. This local application of color filtering allows for enhanced color gamut in targeted areas while leaving other sub-pixels with higher transmittance to maintain overall brightness.
Solution Approach 2:
The patent modifies the optical parameters of the color filter layer by using color resistors with specific optical properties. The color resistors are designed to absorb specific wavelength ranges while maintaining high transmittance in other ranges, thus improving color gamut without excessive brightness loss.
3Illumination intensity
If current of organic light emitting diode is increased to increase brightness, then brightness is improved, but efficiency of organic light emitting diode is decreased and power consumption is increased
Solution Approach 1:
The patent extracts the color generation function from the organic light-emitting diode itself and relocates it to the color resistor layer. This separation allows the OLED to operate at lower currents for brightness enhancement while the color resistors provide the necessary color filtering, thereby improving OLED efficiency and reducing power consumption.
Solution Approach 2:
Color resistors serve as an intermediary layer between the OLED and the viewer. They modify the spectral output of the OLED without requiring the OLED to operate at higher currents, thus achieving brightness enhancement while maintaining efficiency and reducing power consumption.
Data Source
AI summary
The present disclosure provides a display panel and a display terminal, the display panel including an array substrate, a display device layer, and a color filter layer, wherein the display device layer includes a plurality of sub-pixel cycle units continuously arranged, and the sub-pixel cycle unit includes a plurality of sub-pixels. A part of sub-pixels is covered with the color resistors having colors corresponding to that of the sub-pixels to increase the color gamut of the sub-pixels, and meanwhile, sub-pixels not covered by the color resistors are used to increase brightness of the sub-pixels, thereby reducing the power consumption of the display panel, and improving a service life of the display panel, while improving a color gamut of the display panel.