Display Module Substrate Flatness via Local Support Structures

The patent applies local quality by introducing support structures (such as columns or pillars) only in specific regions where they are needed to prevent concave deformation, while leaving the light-transmitting areas without structures to maintain high light transmittance. This creates a spatial differentiation where structural support is provided locally without compromising the overall optical performance of the display module.

The patent segments the display module into distinct functional regions: light-transmitting areas where no structures are present to ensure high light transmittance, and support structure regions where columns or pillars are positioned to maintain substrate flatness. This segmentation allows each region to optimize its specific function without interfering with the other, resolving the contradiction between structural support and optical performance.

The patent applies preliminary action by pre-positioning support structures (columns or pillars) between the first and second substrates before the optical devices are installed or before the display module is assembled. These support structures are预先 arranged to prevent concave deformation of the substrates in the light-transmitting areas, ensuring that when optical devices are later installed, the substrates maintain their flatness and the optical devices can function properly without being affected by substrate deformation.