Planar Light Source Substrate Cutouts for Frame Attachment Interference
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Solution Overview
Problem
In planar light source apparatuses of the side light type, the arrangement position of the light source substrate is restricted due to interference with attachment parts, and forming attachment parts on non-side faces increases the frame size or thickness.
Innovation Solution
A planar light source apparatus with a light source substrate featuring a point light source, a mount part, and a wiring pattern, where the substrate has cutouts or holes corresponding to attachment parts on the frame, allowing the substrate to be arranged on one face while maintaining flexibility in positioning and minimizing frame thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the attachment part is formed on the side face of the frame, then the light source substrate can be arranged on the side face, but the light source substrate contacts with the attachment part causing interference and restraining the degree of freedom of arrangement position
Solution Approach 1:
The patent extracts the attachment part from the side face where the light source substrate is arranged, and relocates it to another face (front, rear, or side face not occupied by light source). This separation eliminates the interference between the attachment part and light source substrate, allowing the light source substrate to be freely arranged on the side face without contact with attachment parts.
2Ease of operation
If the attachment part is formed on a face other than the side face (rear face or upper face), then interference with light source substrate is avoided, but the frame becomes larger or thicker
Solution Approach 1:
The patent utilizes the third dimension (vertical direction) by arranging the light source substrate on the side face of the frame, while placing attachment parts on other faces (front, rear, or remaining side faces). This spatial arrangement in different dimensions allows both the light source substrate and attachment parts to coexist without interference, maintaining a compact frame structure without increasing overall size or thickness.
3Length of stationary object
If the light source substrate is arranged on the side face of the frame, then a thin frame design is achieved, but attachment parts on the side face cause interference and restrict positioning freedom
Solution Approach 1:
The patent segments the frame into different functional faces: side faces are dedicated to arranging the light source substrate for maintaining thin profile, while other faces (front, rear, or remaining side faces) are designated for attachment parts. This functional segmentation of the frame structure allows the light source substrate to be freely positioned on side faces without interference from attachment parts, preserving both thin frame design and positioning freedom.
Data Source
AI summary
A planar light source apparatus includes a light source substrate including: a point light source; a mount part, on which the point light source is mounted; and a wiring part, which has a wiring pattern to supply power to the point light source; a frame including: one face, along which the mount part of the light source substrate is arranged: and an attachment part, which is formed on the one face, wherein the light source substrate has either of a cutout or hole at a position corresponding to the attachment part of the frame, and wherein an area of the wiring part is continuously provided from the mount part and is bent with respect to the one face.