LCD Display Module with Corner LED and Rubber Frame
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Solution Overview
Problem
The integration of a light guide plate between an LCD and a Capacitive Touch Panel (CTP) in mobile terminals often reduces lamination yield and causes bright lines near characters on the screen.
Innovation Solution
A display component comprising a rubber frame with LED lamps, a circuit, and a light guide plate, where the light guide plate is positioned between the LED lamps, and a black and white adhesive is used to ensure uniform light distribution to the character area, improving lamination efficiency and eliminating bright lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide plate is sandwiched between the LCD and CTP to illuminate character keys, then the character keys can be uniquely lightened, but the lamination yield is reduced and bright lines appear near characters on the screen
Solution Approach 1:
The patent divides the illumination system into separate LED lamp modules positioned at corners of the light guide plate, with each LED independently controllable. This segmentation allows precise light control without requiring a complex sandwiched light guide plate structure, thereby maintaining high lamination yield while achieving character key illumination.
Solution Approach 2:
The patent combines multiple functions into the corner structures: the corner pieces serve both as structural support elements and as mounting positions for LED lamps. The light guide plate integrates both light transmission and structural support functions, eliminating the need for separate sandwiched illumination layers and improving lamination yield.
2Illumination intensity
If a light guide plate is sandwiched between the LCD and CTP to illuminate character keys, then the character keys can be uniquely lightened, but bright lines appear in areas close to characters on the whole screen
Solution Approach 1:
The patent implements local quality control by placing LEDs only at corner positions and using a light guide plate with optimized light distribution properties. The black and white adhesive material is strategically positioned to reflect light only where needed (character key areas) while preventing light leakage to non-character areas, thereby eliminating bright lines near characters while maintaining character illumination.
Solution Approach 2:
The patent introduces a black and white adhesive material as an intermediary between the light guide plate and the character key area. This adhesive material acts as a light reflector that directs light precisely to character keys while blocking light from reaching non-character areas, thereby preventing bright line formation while maintaining effective character illumination.
3Illumination intensity
If a light guide plate is sandwiched between the LCD and CTP, then character key illumination is achieved, but the lamination process becomes more complex and yield is reduced
Solution Approach 1:
The illumination system is segmented into independent corner-mounted LED modules rather than requiring a continuous sandwiched light guide plate. This allows the LCD and CTP to be laminated directly without the intermediate light guide plate, simplifying the lamination process and improving yield while maintaining character key illumination capability through the corner LED positioning.
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 enhances the lamination yield of the LCD and CTP while eliminating bright lines near characters, providing improved display performance.
Implementation Method 1
a light guide plate, arranged between the LED lamps in the rubber frame
Implementation Method 2
a black and white adhesive arranged between the lamp strip and the light guide plate, wherein a black side of the black and white adhesive faces the lamp strip, and a white side of the black and white adhesive faces the light guide plate
Data Source
AI summary
The disclosure discloses a display component of a Liquid Crystal Display (LCD), wherein the display component is assembled with a mainboard of a mobile terminal for use. The display component includes: a rubber frame, arranged on an LCD; an adhesion material, arranged in the rubber frame; a lamp strip of which two sides are provided with Light Emitting Diode (LED) lamps, a circuit for controlling the LED lamps and a conductor for connecting the circuit with the mainboard of the mobile terminal being further arranged on the lamp strip; and a light guide plate, arranged between the LED lamps in the rubber frame. By the technical solutions, the technical problems of influence of sandwiching of the light guide plate between the LCD and a Capacitive Touch Panel (CTP) on a lamination process and bright lines in an area close to characters of the whole screen are solved, lamination yield of the LCD and the CTP is improved, and the bright lines in the area close to the characters of the whole screen are eliminated.