Display Substrate Pixel Openings for Under-Screen Camera Transmittance
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Solution Overview
Problem
In the field of display technology, particularly for "under-screen camera" designs, there is a challenge in maintaining light transmittance and display effectiveness in areas where imaging modules are embedded within the display substrate, while increasing the screen-to-body ratio of display devices.
Innovation Solution
A display substrate with a base substrate featuring a first and second display region, each comprising repeating units with sub-pixels and a pixel defining layer, where the sub-pixels have specific opening configurations and arrangements to optimize light transmittance and display consistency across different areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If imaging modules are embedded in the display area to increase screen-to-body ratio, then the screen-to-body ratio is improved, but the light transmittance and display effect deteriorate
Solution Approach 1:
The patent applies local quality by differentiating the opening areas of sub-pixels based on their location. Sub-pixels in the first display area (with imaging modules) have larger opening areas than sub-pixels in the second display area (without imaging modules). This localized adjustment optimizes light transmittance where needed while maintaining normal display performance in other areas, directly resolving the contradiction between screen-to-body ratio and light transmittance.
2Illumination intensity
If opening area of sub-pixels is increased to improve light transmittance, then light transmittance is improved, but display consistency deteriorates
Solution Approach 1:
The patent implements local quality by creating two distinct groups of sub-pixels with different opening areas according to their functional requirements. The first group in the imaging module area has larger openings for light transmittance, while the second group in the normal display area has standard openings for display consistency. This spatial differentiation allows both requirements to be satisfied simultaneously.
Solution Approach 2:
The display area is segmented into two distinct regions: a first display area where imaging modules are located and a second display area where they are not. This segmentation allows independent optimization of sub-pixel characteristics in each region, enabling the patent to achieve both high light transmittance in the imaging area and consistent display quality in the normal display area.
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.