Display Panel Light Conversion Layer for Laser Spot Visibility
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Solution Overview
Problem
Current large-size display panels have high image brightness and low polarizer reflectivity, making it difficult for viewers to see a light spot formed by a laser pointer due to low brightness of the light spot on the display panel.
Innovation Solution
Incorporating a light conversion layer with a light conversion material, such as fluorescent or up-conversion luminescent materials, on the display panel's polarizer or touch layer, which emits visible light with higher brightness when receiving specific light, enhancing visibility of the light spot without needing reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a laser pointer is used to indicate the display region, then the presentation effect is enhanced, but the brightness of the light spot formed on the display panel is relatively low making it difficult for viewers to see
Solution Approach 1:
A light conversion layer is introduced as an intermediary between the laser pointer light source and the display panel. This layer contains light conversion materials (fluorescent or up-conversion luminescent materials) that convert the laser light into visible indicating light with higher brightness, solving the visibility problem without requiring changes to the display panel structure
Solution Approach 2:
The patent changes the optical parameters of the system by introducing light conversion materials that alter the wavelength and brightness characteristics of the laser light. The light conversion layer transforms the original laser light parameters into visible light parameters with enhanced brightness, making the light spot visible on the high-brightness display panel
2Manufacturing precision
If multiple photomasks are used to form grooves in OLED display panels, then the display structure is achieved, but the overall process flow becomes relatively long and costs become relatively high
Solution Approach 1:
The patent extracts the light conversion function from the traditional multi-step photomask process and implements it through a separate light conversion layer. This allows the groove formation to be achieved through simpler means while the light conversion function is added independently, reducing overall process complexity and improving manufacturing efficiency
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
The display panel's light conversion layer emits visible light with higher brightness, making it easier for viewers to see the light spot, improving visibility and usability in presentations and teaching scenarios.
Implementation Method 1
The light conversion material includes a fluorescent material or an up-conversion luminescent material
Implementation Method 2
The light conversion material includes a fluorescent material or an up-conversion luminescent material
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes a display module and an encapsulation cover plate disposed on a light-emitting side of the display module. The light-emitting side of the display module is further provided with a light conversion layer configured to emit indicating light when receiving specific light. The light conversion layer includes a light conversion material. The indicating light is visible light, and a brightness of the indicating light is greater than a determined brightness.