Transparent Display Substrate Layout for Under-Display Cameras
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Solution Overview
Problem
In electronic devices with cameras, the display substrate must be modified to accommodate the camera, resulting in areas where the display cannot function, leading to reduced effective display area.
Innovation Solution
A display substrate design featuring a driving back plate with distinct areas, a first electrode pattern with transparent strip-shaped electrodes, a light emitting layer, and a second electrode pattern, allowing for a PMOLED structure that does not obstruct camera functionality and can be turned off to enable full-screen display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a hole is opened in the display substrate to accommodate the photosensitive element, then the photosensitive element can receive light, but the effective display area is reduced
Solution Approach 1:
The patent extracts the display function from the area where the photosensitive element is located by setting it as a non-display area, allowing the photosensitive element to receive light without obstruction while maintaining the display function in other areas
Solution Approach 2:
The display substrate is segmented into a first area with display function and a second area without display function, where the photosensitive element is accommodated, allowing different regions to serve different purposes
2Object-affected harmful factors
If the display substrate is designed with transparent electrodes and light emitting portions to improve light transmittance, then the photosensitive element can receive light, but the structure becomes more complex
Solution Approach 1:
The first electrode and third electrode serve dual functions: they act as transparent conductive elements for the display function while simultaneously allowing light to pass through to the photosensitive element, eliminating the need for separate light-transmissive structures
Solution Approach 2:
The patent merges the display electrode structure with the light transmission function by using transparent materials for the first and third electrodes, combining two functions into a single structural element
Data Source
AI summary
A display apparatus, a display substrate and a manufacturing method therefor are provided. The display substrate comprises: a driving back plate, having a first driving area and a second driving area; a first electrode pattern, comprising a plurality of transparent first electrodes and a second electrode; a light emitting layer, comprising a first light emitting portion in the first driving area and a second light emitting portion in the second driving area; a second electrode pattern, comprising a plurality of transparent third electrodes in the first driving area and a fourth electrode located in the second driving area. The first electrode, the first light emitting portion and the third electrode corresponding to the first driving area constitute a Passive matrix organic light-emitting diode structure.