Electro-optic Device Dust-proof Substrate Stress Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electro-optic devices, such as liquid crystal projectors, suffer from color shading due to stress generated by holding members, which degrades image quality, primarily caused by mechanical and thermal expansion stresses transmitted to the liquid crystal panel.
Innovation Solution
An electro-optic device design featuring a dust-proof substrate and a holding member with a supporting portion that indirectly transmits stress to the liquid crystal panel, alleviating the stress through a dust-proof substrate and a heat radiating member, while maintaining structural stability and efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a holding member is used to support the liquid crystal panel, then the panel is securely mounted and protected, but stress is generated and transmitted to the panel causing color shading
Solution Approach 1:
The patent introduces a dust-proof substrate as an intermediary component between the holding member and the liquid crystal panel. This substrate serves as a stress-distributing medium that prevents direct stress transmission to the panel while maintaining secure mounting. The holding member attaches to the dust-proof substrate, which then supports the panel, creating a layered structure that isolates the panel from mechanical stress.
2Stability of the object's composition
If the holding member is tightened with a bolt, then the mounting is secure, but distortion is generated in the holding member transmitting stress to the panel
Solution Approach 1:
The dust-proof substrate acts as a mediator between the bolted holding member and the liquid crystal panel. It distributes the tightening forces from the bolts across its surface, preventing localized stress concentration that would cause distortion. This intermediary layer maintains mounting stability while ensuring uniform stress distribution, preventing gap formation between panel substrates.
3Temperature
If heat radiating performance is insufficient, then thermal expansion stress is generated in the holding member, but adding heat radiating components increases device complexity
Solution Approach 1:
The patent merges the dust-proof substrate with heat radiating functionality into a single integrated component. The substrate serves dual purposes: protecting the liquid crystal panel from dust and providing thermal management through heat radiating surfaces. This consolidation eliminates the need for separate heat radiating components, reducing device complexity while effectively managing thermal expansion stress.
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
This configuration effectively reduces stress on the liquid crystal panel, minimizing color shading and enhancing image quality by distributing and absorbing stress, thereby improving the reliability of displayed images.
Implementation Method 1
the stress generated in the main body portion of the holding member is transmitted indirectly to the electro-optic panel via the dust-proof substrate and the supporting portion of the holding portion. Therefore, in comparison with the case where the stress is transmitted directly to the electro-optic panel from the holding member, the stress that the electro-optic panel receives can be alleviated.
Implementation Method 2
When heat exceeding the heat radiating performance of the heat radiating member is generated, a stress is generated also by the deformation of the holding member (that is, thermal expansion).
Data Source
AI summary
An electro-optic device including an electro-optic panel, a dust-proof substrate attached to one of surfaces of the electro-optic panel, and a holding member having a supporting portion that supports an end portion of the dust-proof substrate and a main body portion arranged so as to surround the electro-optic panel.