公开(公告)号：US12098840B2

公开(公告)日：2024-09-24

申请号：US17391822

申请日：2021-08-02

申请人： Entire Technology Co., Ltd.

发明人： Chih-Wen Yang ,  Chia-Yin Yao ,  Mao-Hsing Lin ,  Tsung-Han Lee

IPC分类号： B29D11/00 ,  B29B7/14 ,  B29C44/50 ,  B29C48/00 ,  B29C48/07 ,  B29C48/35 ,  B29C48/87 ,  B29C48/88 ,  B29C48/92 ,  B29D7/01 ,  C08L69/00 ,  F21V9/30 ,  G02B5/02 ,  B29K69/00 ,  B29K105/00 ,  B29K105/04 ,  C09K11/06 ,  C09K11/08 ,  F21Y115/10

CPC分类号： F21V9/30 ,  B29B7/14 ,  B29C44/50 ,  B29C48/0012 ,  B29C48/0019 ,  B29C48/07 ,  B29C48/35 ,  B29C48/87 ,  B29C48/914 ,  B29C48/92 ,  B29D7/01 ,  B29D11/00798 ,  C08L69/00 ,  G02B5/0242 ,  G02B5/0278 ,  B29C2948/92704 ,  B29C2948/92904 ,  B29K2069/00 ,  B29K2105/0032 ,  B29K2105/04 ,  C09K11/06 ,  C09K11/08 ,  F21Y2115/10

摘要： A light diffusion plate is configured to be assembled with a blue light source module having blue Mini LEDs to form a white light backlight module. The light diffusion plate is added with organic dyes with light-emission wavelength of 490-650 nm in order to convert the blue light into white light. The light diffusion plate is made by a foaming extrusion process and contains a plurality of micro-bubbles with a size of 60-400 μm and a weight-reduction ratio of 15-25% for improving the uniformity of white light and resolving the MURA problem. The size of micro-bubbles is controlled by reducing the temperature of at the exit end of the T-die head, such that the wavelength of the white light emitted from the light diffusion plate can be narrower to achieve the effect of wider color gamut display.