LCD Backplane Step Structure to Eliminate Middle Frame Leakage
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Solution Overview
Problem
Conventional liquid crystal display apparatuses face challenges in reducing costs and improving manufacturing and assembly efficiency due to the need for middle frames to support optical parts, which can lead to light leakage issues and increased complexity.
Innovation Solution
A liquid crystal display apparatus design featuring a C-shaped backplane with a first and second step portion, where the liquid crystal panel is directly mounted on the second step portion, eliminating the need for a middle frame and allowing for the integration of optical parts without additional structural support, thereby reducing costs and enhancing assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a middle frame is used to support optical parts, then structural support is improved, but device complexity and cost increase
Solution Approach 1:
The backplane is designed with integrated step portions that directly support both the liquid crystal panel and optical parts. This merging of support functions into the backplane structure eliminates the need for a separate middle frame, thereby reducing device complexity and cost while maintaining structural support capability.
Solution Approach 2:
The backplane is designed to perform multiple functions: it provides structural support for the liquid crystal panel, supports optical parts through its step portions, and prevents light leakage. This multi-functionality eliminates the need for additional middle frame components, reducing overall device complexity.
2Strength
If a middle frame is used to support optical parts, then structural support is improved, but manufacturing and assembly efficiency decrease
Solution Approach 1:
By integrating the support structure for optical parts directly into the backplane through step portions, the number of components is reduced. This simplifies the assembly process as fewer parts need to be manufactured and assembled, thereby improving manufacturing and assembly efficiency while maintaining structural support.
3Strength
If a middle frame is used to support optical parts, then structural support is improved, but light leakage issues increase
Solution Approach 1:
The backplane features step portions with different heights at different locations. The first step portion supports optical parts while the second step portion supports the liquid crystal panel. This localized structural variation provides precise support and positioning, preventing light leakage without requiring a middle frame.
4Device complexity
If the backplane uses a simple step portion structure, then device complexity is reduced, but support precision may worsen
Solution Approach 1:
The backplane incorporates step portions with specifically designed different heights at different locations. The first step portion is designed to support optical parts at a specific height, while the second step portion supports the liquid crystal panel at a different height. This localized structural differentiation ensures precise support positioning while maintaining overall structural simplicity.
Data Source
AI summary
A liquid crystal display apparatus is provided. The liquid crystal display apparatus comprises a backplane having a second step portion and a first step portion used for supporting a liquid crystal panel, that is, the assembly of optical parts such as a light homogenizing element and an optical film to the liquid crystal panel is implemented in the present application via the backplane without a middle frame.