Display Panel Substrate Merging Cover Glass and TFT Base
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Solution Overview
Problem
Existing display panels face challenges in achieving a balance between thickness reduction and maintaining strength and screen-to-body ratio, as they strive to become thinner and lighter, with traditional methods limited by the need for additional surface glass and complex architecture requirements.
Innovation Solution
The display panel design includes a first substrate with thin film transistors and a second substrate with a color film layer, where the first substrate serves as the outer cover glass, and a flexible circuit board configuration that allows for a panel cavity and a reoriented backlight module with reflective and diffusive elements to enhance illumination and brightness, while maintaining structural integrity with a thickness of 0.6 to 0.8 mm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional display panel structures are used with additional surface glass, then strength and structural integrity are maintained, but thickness and weight increase
Solution Approach 1:
The patent merges the cover glass function with the first substrate by making the first substrate serve dual purposes: as the structural base for thin film transistors and as the outer cover glass. This eliminates the need for separate surface glass layers while maintaining strength and structural integrity, thereby reducing overall thickness.
Solution Approach 2:
The first substrate is designed to perform multiple functions simultaneously: it serves as the structural foundation for the thin film transistor array, as the outer cover glass providing mechanical strength and protection, and as part of the bonding structure. This multi-functionality eliminates redundant components and reduces thickness.
2Length of moving object
If the display panel is made thinner by removing additional surface glass, then thickness is reduced, but manufacturing complexity increases due to reoriented backlight module
Solution Approach 1:
The patent inverts the traditional backlight module orientation by placing the backlight at the second substrate side rather than the first substrate side. This reversal allows the first substrate to serve as the outer cover glass without requiring additional surface glass, simplifying the overall structure despite the unconventional backlight positioning.
Solution Approach 2:
The patent changes the dimensional arrangement of the backlight module by reorienting it from the traditional front-lit configuration to a back-lit configuration relative to the display area. This dimensional change allows light to pass through the liquid crystal layer more efficiently while maintaining a thinner profile.
3Illumination intensity
If the second substrate area is reduced to optimize light path, then light utilization improves, but structural support may be compromised
Solution Approach 1:
The patent applies local quality by making the second substrate area smaller than the first substrate area. The reduced second substrate is strategically positioned to cover only the necessary display area, optimizing light path and utilization, while the larger first substrate provides the required structural support and serves as the outer cover glass.
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 achieves a thinner and stronger display panel with improved screen-to-body ratio and display brightness by utilizing the first substrate as cover glass without additional surface glass, and optimizing the backlight module's orientation and components for enhanced light utilization and reflection.
Implementation Method 1
the plastic frame has a reflective structure on one side corresponding to a light exit of the backlight, and a light emitted by the backlight is reflected by the reflective structure into the light guide plate
Implementation Method 2
the liquid crystal is encapsulated between the first substrate and the second substrate
Data Source
AI summary
The present disclosure relates to the field of display technology, and discloses a display panel and a manufacturing method. The display panel includes a first substrate, a second substrate, a liquid crystal, and a backlight module, wherein the first substrate includes a display area and a bonding area adjacent to the display area, and the display area of the first substrate on one side close to the second substrate is provided with thin film transistors arranged in an array mode; the second substrate is disposed opposite to the display area of the first substrate; the liquid crystal is encapsulated between the first substrate and the second substrate; the area of the second substrate is smaller than that of the first substrate, and the second substrate is between the first substrate and the backlight module.