A light guide structure of a flat panel display and a flat panel display with the light guide structure

Abstract

The invention relates to the field of display screens, in particular to a light guide structure of a flat panel display and a flat panel display with the light guide structure. The light guide structure is used to set the light emitting surface of the flat panel display panel, which includes an incident surface for introducing the outgoing light of the flat panel display panel and a light exit surface for emitting light, and several optical panels are arranged between the incident surface and the light exit surface. In the light guide part, a diffusion layer is provided on the light emitting surface, a partition part is provided between the optical light guide part, and a reflective layer is also provided between the optical light guide part and the partition part. The optical light guide part in the light guide structure corresponds to the light emitted from a single or multiple display pixels on the flat panel display panel. The light enters the optical light guide part after exiting from the surface of the flat panel display panel. After multiple reflections in the part, it enters the diffusion layer through the light-emitting surface, and finally exits from the diffusion layer. The invention can well solve the problems of color shift and small viewing angle of the flat-panel display when it is used on the flat-panel display.

Description

technical field [0001] The invention relates to the field of display screens, more specifically, to a light guide structure of a flat panel display and a flat panel display with the light guide structure. Background technique [0002] With the continuous development of flat-panel display technology, large-screen flat-panel displays such as LCD displays and LED displays are increasingly used in the field of indoor display. During the process, some defects inherent in the display screen still affect the display effect. For example, because the liquid crystal cannot actively emit light on the LCD display, a fixed light source is required to provide backlight for it. The backlight needs to pass through the polarizer, the liquid crystal layer and the color filter successively. When passing through the liquid crystal molecules at different angles, the transmittance is different, and the light transmittance of different wavelengths is also different, which causes the problem of th...

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Problems solved by technology

[0004] As another example, the basic display unit that makes up the LED display is the LED lamp bead. Due to the discreteness of the manufacturing process, the distribution of the emitted light intensity between each LED lamp bead is inconsistent. At the same time, due to the accuracy error of the SMT process, the normal line of the LED lamp bead There is a certain deviation between the direction and the normal direction of the LED substrate

The above two reasons can lead to the color cast of the LED display

The point-by-point correction technology in the industry can only correct the color cast of a specific viewing angle, and it does not help the color shift of other viewing angles.

And because the light-emitting area of ​​the light-emitting chips that make up a single LED display lamp bead is too small, the light-emitting area is too concentrated, resulting in a low pixel filling rate of the LED display (the pixel filling rate refers to the ratio of the light-emitting area of ​​the LED light-emitting chips that make up a pixel to the average total number of pixels per pixel. Area ratio), which affects the display effect. When viewing the LED display screen for a long time, it will bring visual discomfort.

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