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Backlight module

A backlight module and backplane technology, which is applied in the field of backlight modules with light guide cavity, can solve the problems of backlight color shift and insufficient light mixing effect, etc.

Active Publication Date: 2021-06-08
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, driven by the thinning trend of display devices, when the thickness of the display device is continuously reduced, the above-mentioned light mixing space is also compressed, and the light mixing effect provided by the light is relatively insufficient. Therefore, this type of edge-lit backlight module The provided backlight is prone to color shift

Method used

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0041] The backlight module proposed by the present invention can provide a surface light source, which can be applied in non-self-luminous display devices such as liquid crystal display (Liquid Crystal Display, LCD) or electrophoretic display (Electrophoresis Display, EPD). Backlight: These devices are preferably applied to computer monitors, televisions, and monitors. In addition, the display device can also be applied to other electronic devices, for example, as a display screen of a mobile phone, a digital camera, a tablet computer, or a handheld game device.

[0042] figure 1 It is an exploded view of the components of the display device in the first embodiment of the present invention. Please refer to figure 1 , the display device 100 of the first embodiment of the present invention i...

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Abstract

The invention discloses a backlight module, which comprises a light guide cavity, a light emitting area and a wavelength conversion layer. The light-emitting area and the wavelength conversion layer covering it are arranged at one end of the light guiding cavity, and the light guiding cavity extends along a direction from the end. The maximum thickness of the light guiding cavity is a first value; in the extending direction of the light guiding cavity, the ratio of the widths of the light emitting area and the wavelength conversion layer is a second value. When the first value does not exceed 40 mm, the second value falls within the range of 0.5 to 1.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module with a light guide cavity. Background technique [0002] Flat and curved display technologies have been widely used in electronic devices such as mobile phones, personal wearable devices, televisions, and computers. However, with the continuous improvement of specification requirements such as resolution and narrow bezel, the optical design in the display device is also constantly tested. [0003] Taking liquid crystal display technology as an example, the pixels of such non-self-illuminating display devices need to be illuminated by external light sources, and the brightness and darkness of the pixels are determined by controlling the transmittance or reflectance of the luminous energy of the pixels. Therefore, the optical performance of the liquid crystal display device is closely related to the backlight module as an external light source. [0004] The backlight modul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133605G02F1/133615G02F1/133614
Inventor 曾立伟蔡卲瑜薛芷苓
Owner AU OPTRONICS CORP