Curved Display Optical Unit Refraction for Brightness Uniformity
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Solution Overview
Problem
Curved organic light emitting display apparatuses face issues with display quality deterioration due to white angle difference properties, causing brightness and color distortion in curved areas compared to flat areas when viewed from the front, leading to increased brightness and color scattering.
Innovation Solution
Incorporating optical units with a liquid crystal layer and differently shaped prism parts on the display panel to refract light emitted from the curved areas, ensuring the refracted light is parallel to the light emitted from the flat areas, thereby reducing the white angle difference effect and maintaining consistent display quality across different viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If curved display areas are used in organic light emitting display apparatuses, then the display apparatus can be designed with flexible shapes and reduced thickness, but white angle difference properties cause brightness and color distortion when viewed from the front
Solution Approach 1:
An optical unit is introduced as an intermediary component between the curved display area and the viewer. This optical unit includes a liquid crystal layer and a prism layer that work together to refract light from the curved display area, correcting the white angle difference effect and ensuring uniform brightness and color perception from the front viewing angle
Solution Approach 2:
The optical unit changes the optical parameters of light emitted from the curved display area by using a liquid crystal layer with specific refractive indices and a prism layer with carefully designed inclination angles. These parameter changes in light refraction and direction correct the brightness and color distortion caused by the curved geometry
2Adaptability or versatility
If curved display areas are used, then flexible shapes are achieved, but color distortion and brightness scattering increase in curved areas compared to flat areas
Solution Approach 1:
The optical unit serves as a mediator that processes light from the curved display area before it reaches the viewer. The liquid crystal layer and prism layer work together to refract and redirect light, ensuring that color and brightness remain consistent across both curved and flat display areas, thereby maintaining display quality precision despite the flexible curved shape
Solution Approach 2:
The optical unit is specifically applied to the curved display areas where the white angle difference problem occurs, while leaving flat areas unaffected. This localized application corrects display quality issues only in the regions where they arise, maintaining overall display consistency without requiring modification of the entire display structure
3Illumination intensity
If optical units with liquid crystal layer and prism parts are added, then light direction is corrected and display quality is maintained, but device complexity increases
Solution Approach 1:
The liquid crystal layer and prism layer are merged into a single integrated optical unit that is applied directly to the curved display area. This combination allows both the liquid crystal's refractive index control and the prism's light direction control to work together in one compact structure, correcting brightness uniformity without requiring separate complex systems
Solution Approach 2:
The optical unit performs multiple functions simultaneously: it refracts light to correct white angle difference, controls light direction through the prism inclination, and maintains color accuracy. This multi-functionality in a single component reduces the need for multiple separate corrective mechanisms, thereby limiting the increase in device complexity
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 solution effectively reduces the deterioration in display quality by ensuring that light from curved areas is refracted to match the direction of light from flat areas, minimizing brightness and color changes when viewed from various angles, thus maintaining consistent image quality.
Implementation Method 1
an optical unit including a liquid crystal layer on the curved display area, and configured to adjust a direction of light emitted from the display panel
Implementation Method 2
The optical pattern may include differently shaped prism parts. Each of the prism parts may include a triangular shape when viewed in a cross-section
Data Source
AI summary
A display apparatus includes a display apparatus includes a display panel including a curved display area, and an optical unit including a liquid crystal layer on the curved display area, and configured to adjust a direction of light emitted from the display panel.