BACKLIGHT-TYPE MINI LED CHIP AND MANUFACTURING METHOD THEREFOR

• Main Authors: WU, Yongsheng, QI, Jiapeng, ZHANG, Tingfang, ZHANG, Fan
• Format: Patent
• Language: English; French; German
• Published: 10.05.2023
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

Disclosed are a backlight-type Mini LED chip and a fabrication method therefor. According to a preset arrangement of Mini LED chips, a grating in a shape corresponding to the preset arrangement is etched on a backlight reflective layer of each chip, such that the light shape of the Mini LED chips can be controlled; the shape of the grating corresponds to the preset arrangement of the chips, such that the chips can be divided into more regions, which is equivalent to increasing the arrangement density of the chips, the visual resolution experience is improved, and the resolution perceived by human eyes is increased, thus improving the display effect of the chips; and the width of the grating can be adjusted to change the ratio of vertical emergent light and lateral emergent light of the chip, so as to adjust the angle and intensity of emergent light of the chip, such that the control effect and display effect of the Mini LED chips are further improved.