Touch Control Structure with Curved Metal Wirings for Under-screen Camera
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The under-screen camera technology in OLED display panels faces challenges due to low light transmittance caused by metal wirings in the conventional touch area, leading to glare and reduced imaging quality, which hinders the achievement of a full-screen design.
Innovation Solution
A touch control structure with metal wirings that are electrically insulated and curved to reduce density in specific regions, allowing for increased light transmittance by minimizing the area blocked by these wirings, thereby enhancing light reach to camera components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If metal wirings are densely arranged in the touch control structure, then the touch control function is improved, but the light transmittance is reduced
Solution Approach 1:
The patent applies different metal wiring densities to different regions of the touch control structure. The first region (camera area) has a lower density of metal wirings to allow light transmission, while the second region (touch control area) has a higher density to ensure touch control functionality. This local differentiation resolves the contradiction by providing appropriate wiring density in each specific area.
Solution Approach 2:
The touch control structure is divided into multiple regions with different wiring characteristics. The structure segments the metal wiring distribution into a first region with reduced wiring density for camera light transmission and a second region with normal wiring density for touch control, allowing both functions to coexist without mutual interference.
2Ease of operation
If metal wirings are added for touch control, then the touch control capability is improved, but the imaging quality is reduced due to glare and light blocking
Solution Approach 1:
The patent implements local quality by creating a first region with reduced metal wiring density specifically for the camera area, minimizing light blocking and glare that would affect imaging quality, while maintaining adequate wiring density in other areas to preserve touch control capability.
3Illumination intensity
If the array substrate and OLED film layers are optimized, then the light transmittance is slightly improved, but the response rate of the camera is seriously affected
Solution Approach 1:
The patent changes the structural parameter of the metal wiring arrangement in the touch control layer, specifically reducing the density of metal wirings in the first region. This parameter change in the wiring layout provides significant light transmittance improvement without compromising camera response rate, overcoming the limitations of optimizing only the array substrate and OLED film layers.
4Illumination intensity
If an opening is defined in the display region to enable light reach, then the light transmittance to camera is improved, but a circular non-display region is created affecting display quality
Solution Approach 1:
Instead of creating a physical opening that would disrupt the display region, the patent applies local quality by reducing metal wiring density in a first region within the existing display area. This approach maintains the integrity and continuity of the display region while still achieving sufficient light transmittance for the camera.
Data Source
AI summary
A touch control structure, and a display panel and a display device using the same are provided. The advantage is that an area of a first region which is blocked by metal wirings extending through the first region is less than an area of a second region which is blocked by metal wirings extending through the second region. Therefore, light transmittance in the first region is larger than light transmittance in the second region. A module that needs sufficient visible light can be disposed on a location corresponding to the first region to improve performance of the module.