Two-Substrate Light-Emitting Module for Brightness and Heat Control
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Solution Overview
Problem
The precision limitations in manufacturing Mini LEDs result in poor display effects due to low arrangement density and increased power consumption leading to localized heating and yield issues in display devices.
Innovation Solution
A light-emitting module design with first and second substrates, where first light-emitting units are on the first substrate and second units on the second substrate, allowing separate control and increased density without overloading driver chips, combined with reflective and protective structures to enhance luminance and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If Mini LEDs are used to prepare high contrast or high brightness light-emitting modules, then local dimming performance is improved, but manufacturing precision limitations result in poor display effects due to low arrangement density
Solution Approach 1:
The patent divides the light-emitting units into two distinct groups: first light-emitting units disposed on the first substrate and second light-emitting units disposed on the second substrate. This segmentation allows independent control and optimization of each group, overcoming the limitations of manufacturing precision by enabling separate alignment and positioning processes for each substrate's light-emitting units.
Solution Approach 2:
The patent transitions from a single-substrate arrangement to a multi-substrate three-dimensional configuration. First light-emitting units are positioned on the first substrate while second light-emitting units are positioned on the second substrate, creating vertical stacking. This dimensional change increases arrangement density and improves display effects by utilizing both horizontal and vertical spatial dimensions.
2Illumination intensity
If Mini LEDs are used to prepare high contrast or high brightness light-emitting modules, then local dimming performance is improved, but power consumption increases leading to localized heating
Solution Approach 1:
By segmenting the light-emitting units into two separate groups on different substrates, the patent enables independent power control for each group. This segmentation allows the system to control power consumption more precisely, preventing excessive heat generation in any single location while maintaining high brightness output.
Solution Approach 2:
The patent implements periodic or pulsed control of the light-emitting units through the control panel, allowing selective activation of first and second light-emitting units. This periodic action enables dynamic power management that prevents localized heating while maintaining high brightness when needed.
3Illumination intensity
If Mini LEDs are used to prepare high contrast or high brightness light-emitting modules, then local dimming performance is improved, but yield decreases due to precision limitations
Solution Approach 1:
The patent segments the light-emitting units into two separate groups on different substrates, allowing independent quality control and alignment processes for each group. This segmentation reduces the impact of precision limitations on overall yield, as each substrate can be optimized independently for manufacturing precision.
Solution Approach 2:
The patent introduces a control panel as an intermediary component that selectively controls the light-emitting units. This intermediary enables precise control over which light-emitting units are active, allowing for better quality selection and control, thereby improving yield by ensuring only properly functioning units are utilized.
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
Improves luminance and display effect while preventing localized heating, ensuring high yield by separately controlling light-emitting units on multiple substrates and using reflective and protective elements.
Implementation Method 1
a plurality of first light-emitting units, disposed on a target side of the first substrate; a second substrate, having a plurality of apertures corresponding to the plurality of first light-emitting units, wherein light emitted from the plurality of first light-emitting units is irradiated through the plurality of apertures toward a target direction
Implementation Method 2
a first reflective portion and a second reflective portion; wherein the first reflective portion is disposed between the first substrate and the second substrate
Data Source
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AI summary
A light-emitting module (10) and a display device (00), relating to the technical field of display. The light-emitting module (10) comprises a first substrate (101), a plurality of first light-emitting units (102) located on the first substrate (101), a second substrate (103), and a plurality of second light-emitting units (104) located on the second substrate (103). Light emitted by the plurality of first light-emitting units (102) is projected in a direction away from the first substrate (101) through holes (103a) in the second substrate (103), and light emitted by the plurality of second light-emitting units (104) is also projected in the direction away from the first substrate (101), so that the light-emitting brightness of the light-emitting module (10) can be increased, thereby improving the display effect of the display device (00). In addition, because the plurality of first light-emitting units (102) and the plurality of second light-emitting units (104) are respectively arranged on two substrates, the light-emitting units arranged on each of the two substrates can be controlled independently, thereby avoiding the increase of power of a driving chip in the light-emitting module (10), avoiding local heating of the light-emitting module (10), and ensuring the product yield.