Rigid Member for Display Device Surface Evenness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices with digitizer layers experience unevenness in protective films due to height differences in wiring, causing visibility issues under high-luminance light when not displaying an image.
Innovation Solution
A display device design featuring a rigid member between the display panel and the digitizer layer, with a shield member and heat dissipation layer, where the rigid member has a thickness greater than the digitizer and shield members, and includes bars and slits to facilitate folding while preventing unevenness in the protective film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a digitizer layer with wiring is disposed on the display panel, then touch input detection capability is improved, but height differences in the wiring cause unevenness in the protective film that becomes visible under high-luminance light
Solution Approach 1:
A rigid member is introduced as an intermediary component between the display panel and the protective film. This rigid member has a thickness greater than the digitizer layer thickness, allowing it to bridge over the height differences caused by wiring protrusions. The rigid member's top surface provides a flat reference plane that enables the protective film to be disposed evenly, preventing visible unevenness while maintaining touch detection functionality.
2Shape
If the rigid member thickness is increased to prevent unevenness visibility, then protective film evenness is improved, but device thickness increases
Solution Approach 1:
The thickness of the rigid member is optimized to be greater than the digitizer layer thickness (specifically greater than the height differences caused by wiring) but controlled to minimize overall device thickness. This parameter optimization allows the rigid member to fulfill its function of preventing protective film unevenness while maintaining a compact device profile.
3Object-affected harmful factors
If a shield member is added to block electromagnetic interference, then EMI shielding capability is improved, but device complexity increases
Solution Approach 1:
The rigid member serves multiple functions simultaneously: it provides mechanical support to prevent protective film unevenness, acts as an electromagnetic shield to block interference between the display panel and digitizer layer, and maintains structural rigidity. By combining these functions in a single component, the need for separate shield members is reduced, 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
Prevents unevenness in the protective film from becoming visible under high-luminance light, ensuring a smooth and even display surface by using a rigid member with specific structural elements to manage height differences in the digitizer layer wiring.
Implementation Method 1
a digitizer layer disposed on a second surface opposite to the first surface of the display panel and including first electrode patterns configured to generate a magnetic field and second electrode patterns configured to generate a magnetic field
Data Source
AI summary
A display device includes a display panel configured to display an image on a first surface thereof, a digitizer layer disposed on a second surface opposite to the first surface of the display panel and including first electrode patterns configured to generate a magnetic field and second electrode patterns configured to generate a magnetic field, a shield member disposed on a first surface of the digitizer layer, and a rigid member between the display panel and the shield member.