Display with double faces

Abstract

A display with double-surface consists of back light module, the first display face plate, the second display face plate and multiple reflective polarized plate being all positioned between the first light outgoing surface on light guide plate in back light module and the first display face plate or positioned between the second light outgoing surface on light guide plate and the second display face plate.

Description

technical field [0001] The invention provides a double-sided liquid crystal display, especially a double-sided liquid crystal display capable of improving uneven brightness of a main display panel. Background technique [0002] Liquid crystal display is a thin, light and power-saving flat-panel display device. It uses the rotation state of liquid crystal molecules and two layers of polarizers on both sides of the liquid crystal molecules to control the light transmittance and realize the display of colors. Control the transmittance to make adjustments. When the color remains unchanged, the liquid crystal molecules also remain unchanged, so the liquid crystal display has the advantages of stable picture and no flickering feeling. Due to the above advantages, the liquid crystal display is widely used in many electrical products. From the field of portable products such as mobile phones, personal digital assistants, notebook computers and digital cameras, mobile phones can be ...

AI Technical Summary

Problems solved by technology

Since the main panel and the auxiliary panel share a light guide plate, another problem arises at the same time, because the size of the auxiliary panel is usually smaller than the main panel, and the light outlet on the main frame matches the size of the auxiliary panel is also smaller than the main panel, so Part of the light from the backlight module will enter the auxiliary panel through the light outlet, while the part without the light outlet will be completely reflected back to the main panel by the main frame or the reflective sheet on the frame, so the main panel will often have uneven brightness, that is, Compared with the main frame, the light in the part with the light outlet is darker, forming a shadow in the shape of the light outlet, thus causing visual differences in the light and color of the main panel

[0005] At this stage, there are many methods to improve the above problems. For example, modify the pattern of the light guide plate of the backlight module to make the light distribution uniform. However, because part of the light source is consumed at the back light exit, there is a big gap in the pattern design at the critical position. Even though many manufacturers still have uneven brightness on the main panel after fine tuning; in addition, the selection of the diffuser plate can also reduce the uneven light, but its contribution is very slight, not enough to improve this situation; or use a multi-layer film sheet such as a light-enhancing sheet or a diffusion sheet to slow down the unevenness, but instead cause a significant increase in the thickness and cost of a double-sided LCD display

Images