Double Side Display Frame Single Backlight Cavity Design

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Solution Overview

Problem

Current double side liquid crystal displays face issues with high production costs and non-uniform display brightness due to the use of two backlight modules, which are costly and result in uneven illumination.

Innovation Solution

A double side display frame design that incorporates a top, first side part, and second side part connected to form a backlight cavity, with a light source component located on a protruding surface to ensure uniform light distribution across both display panels, eliminating the need for two separate backlight modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two separate backlight modules are used for double side display, then the display function is achieved, but the production cost increases and display uniformity deteriorates

Engineering Contradiction:
Improvedouble side display functionVSAvoidproduction cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges two separate backlight modules into a single integrated backlight module with a light guide plate that has two illuminating surfaces. This consolidation eliminates redundant components and reduces production cost while maintaining double side display functionality. The light guide plate serves as a common light source for both display panels, achieving cost reduction through component integration.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a light guide plate with two illuminating surfaces, adding a dimensional aspect to the light distribution. By utilizing the light guide plate's ability to emit light from both sides simultaneously, the solution achieves uniform brightness distribution across both display panels without requiring separate backlight modules for each side.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If two separate backlight modules are used for double side display, then the display function is achieved, but the display uniformity deteriorates

Engineering Contradiction:
Improvedouble side display functionVSAvoiddisplay uniformity
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent merges two separate backlight modules into a single integrated backlight module with a light guide plate that has two illuminating surfaces. This consolidation eliminates redundant components and reduces production cost while maintaining double side display functionality. The light guide plate serves as a common light source for both display panels, achieving cost reduction through component integration.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The light guide plate is designed to provide homogeneous light distribution to both display panels simultaneously. By using a single light guide plate with two illuminating surfaces, the patent ensures that both sides of the display receive uniform and consistent brightness, eliminating the non-uniformity issues that would arise from using two separate backlight modules with potential manufacturing variations.

Inventive Principle:
Principle #33Homogeneity

3Ease of manufacture

If a single backlight module with two illuminating surfaces is used, then production cost is reduced, but display uniformity deteriorates

Engineering Contradiction:
Improveproduction costVSAvoiddisplay uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The light guide plate is designed to provide homogeneous light distribution to both display panels simultaneously. By using a single light guide plate with two illuminating surfaces, the patent ensures that both sides of the display receive uniform and consistent brightness, eliminating the non-uniformity issues that would arise from using two separate backlight modules with potential manufacturing variations.

Inventive Principle:
Principle #33Homogeneity

Solution Approach 2:

The patent introduces a light guide plate with two illuminating surfaces, adding a dimensional aspect to the light distribution. By utilizing the light guide plate's ability to emit light from both sides simultaneously, the solution achieves uniform brightness distribution across both display panels without requiring separate backlight modules for each side.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

The solution achieves uniform brightness across both display panels by allowing the light source to emit light at a large angle, ensuring that the light is uniformly mixed within the backlight cavity and distributed evenly to both panels, thus reducing production costs and enhancing display uniformity.

Implementation Method 1

the light source to emit light at a large angle, ensuring that the light is uniformly mixed within the backlight cavity and distributed evenly to both panels

Methodology Applied
Scientific EffectLight emission and distribution: Light

Data Source

PatentUS10175516B2Double side display frame and double side display
Publication Date: 2019.01.08 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
  • US10175516B2 patent drawing
  • US10175516B2 patent drawing
  • US10175516B2 patent drawing

AI summary

The present invention discloses a double side display frame, comprising a top, a first side part, a bottom and a second side part which are connected end to end and jointly surround a backlight cavity, and the bottom and the top are oppositely located between the first side part and the second side part; the first side part comprises a first window and a first installation slot, and the first window penetrates a middle part of the first side part and communicates with the backlight cavity, and the first installation slot is located at periphery of the first window; the second side part comprises a second window and a second installation slot, and the second window penetrates a middle part of the second side part and communicates with the backlight cavity, and the second installation slot is located at periphery of the second window.