Light Guide Plate Extended Portion for Display Border Illumination
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Solution Overview
Problem
Existing display panels suffer from a dark area at the border of the display region due to the light guide plate being shorter than the display region, resulting in incomplete illumination and a poor display effect.
Innovation Solution
The light guide plate is designed with an extended second portion that reaches the first frame, allowing for a closer distance between the light guide plate and the frame, and incorporating reflectors and an optical substrate to enhance light reflection and distribution, ensuring complete illumination of the display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the light guide plate length is reduced to minimize the distance between the display screen and the frame, then the frame distance is reduced, but a dark area is formed at the border of the display region resulting in poor display effect
Solution Approach 1:
The light guide plate is extended in a new spatial dimension by adding a second portion that protrudes from the optical substrate toward the display substrate. This vertical extension allows the light guide plate to reach the display region border without increasing the horizontal frame distance, thereby illuminating the entire display region including the border area while maintaining compact frame dimensions.
Solution Approach 2:
The second portion of the light guide plate is positioned within the space between the optical substrate and the display substrate, effectively nesting the light guide structure within the existing display panel layers. This allows the light guide plate to extend its functional length without adding external dimensions to the display device, resolving the contradiction between compact frame distance and complete display region illumination.
2Illumination intensity
If the light guide plate length is increased to illuminate the entire display region, then the display effect is improved, but the distance between the display screen and the frame increases
Solution Approach 1:
Instead of extending the light guide plate horizontally which would increase frame distance, the invention extends it vertically by adding a second portion that protrudes from the optical substrate toward the display substrate. This dimensional change allows the light guide plate to reach the display region border while maintaining compact horizontal dimensions.
Solution Approach 2:
The second portion of the light guide plate is designed as a thin, flexible extension that can protrude into the limited space between the optical substrate and display substrate. This thin-film approach allows the light guide function to extend to the display region border without significantly increasing the overall panel thickness or frame distance.
3Illumination intensity
If the light guide plate is extended to the first frame, then complete illumination of the display region is achieved, but the structural complexity increases
Solution Approach 1:
The light guide plate is segmented into two distinct portions: a first portion that lies on the optical substrate and a second portion that protrudes toward the display substrate. This segmentation allows each portion to be optimized for its specific function while maintaining a relatively simple overall structure that achieves complete display region illumination.
Solution Approach 2:
The second portion of the light guide plate serves multiple functions: it extends the light guide function to the display region border, acts as a structural bridge between the optical substrate and display substrate, and provides a mounting surface for additional optical elements. This multi-functionality reduces the need for separate components, thereby managing structural complexity while achieving complete illumination.
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 design increases the light guide plate length to illuminate the entire display region, eliminating dark areas and improving the display effect by ensuring that light rays from the backlight source are reflected effectively across the entire display area.
Implementation Method 1
the light guide plate comprises a first portion and a second portion, wherein the second portion is formed by the first portion extending to the first frame from a side close to the first frame
Implementation Method 2
the optical substrate is arranged between the display substrate and the light guide plate
Data Source
AI summary
A display panel and a display device are disclosed. The display panel comprises: a display substrate, an optical substrate, a light guide plate and a first frame; wherein: the optical substrate is arranged between the display substrate and the light guide plate, and the first frame is arranged on the same side edge of the display substrate, the optical substrate and the light guide plate; the light guide plate comprises a first portion and a second portion, wherein the second portion is formed by the first portion extending to the first frame from a side close the first frame, and the distance between the second portion and the first frame is smaller than the thickness of the light guide plate. Accordingly, the length of the light guide plate is increased, and the increased portion of the light guide plate extends into the first frame, enabling the light rays emitted from the backlight source to completely illuminate the display region after being reflected by the light guide plate, which improves the display effect.