Display Substrate with Variable Pixel Defining Layer Openings
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Solution Overview
Problem
In the field of display technology, particularly for devices with an under-screen camera design, there is a challenge in maintaining light transmittance and display effectiveness in areas where imaging modules are embedded, while increasing the screen-to-body ratio.
Innovation Solution
A display substrate with a base substrate featuring a first and second display region, each comprising repeating units with sub-pixels arranged in arrays, where the pixel defining layer includes openings of varying sizes to optimize light transmittance and display consistency across different areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the screen-to-body ratio is increased by embedding imaging modules in the display area, then the screen-to-body ratio is improved, but the light transmittance and display effect in the corresponding portion deteriorate
Solution Approach 1:
The patent applies local quality by differentiating the opening sizes in the pixel defining layer between the first display area (with larger openings) and the second display area (with smaller openings). This localized variation allows the imaging module area to have higher light transmittance while maintaining display quality in other regions, thereby resolving the contradiction between increased screen-to-body ratio and maintained light transmittance.
2Illumination intensity
If the opening size in the pixel defining layer is increased to improve light transmittance, then the light transmittance is improved, but the display consistency and visual quality deteriorate
Solution Approach 1:
The patent implements local quality by spatially varying the opening sizes in the pixel defining layer according to the functional requirements of different display areas. The first display area has larger openings for improved light transmittance, while the second display area has smaller openings for better display consistency. This localized differentiation allows both light transmittance and display consistency to be optimized in their respective regions without compromising the other.
Data Source
AI summary
A display substrate, a mask, and a display device are provided. The display substrate includes: a plurality of first repeating units including a first sub-pixel and a second sub-pixel; a plurality of second repeating units including a fourth sub-pixel and a fifth sub-pixel; and a pixel defining layer arranged on the base substrate, wherein the pixel defining layer includes a plurality of first openings and a plurality of second openings. Each of the first sub-pixel and the second sub-pixel includes a first opening; each of the fourth sub-pixel and the fifth sub-pixel includes a second opening; and an orthographic projection of the first opening on the base substrate has an area greater than that of an orthographic projection of the second opening on the base substrate.