Light bar, method for fabricating same, and display apparatus

A method for fabricating a light bar, comprising:

• fabricating a plurality of light emitting units, comprising:
• forming a plurality of light beads on a blue film;
• transferring the plurality of light beads on the blue film to a substrate where a thermally-conductive adhesive tape is disposed, the plurality of light beads being spaced apart from each other on the substrate;
• forming an initial structure on the substrate by injecting fluorescent melt onto the plurality of light beads and thermally curing the fluorescent melt to form a fluorescent layer, wherein the initial structure comprises the plurality of light beads that are spaced apart from each other and the fluorescent layer covering the plurality of light beads;
• and
• cutting the initial structure into the plurality of light emitting units, wherein each of the plurality of the light emitting units comprises one of the light beads and a fluorescent film, the fluorescent film comprising a portion, covering the one light bead, of the fluorescent layer, the light bead and the fluorescent film being both light emitting portions in the light emitting unit;
• determining a target group of light emitting units in the plurality of light emitting units based on luminescent characteristics of the plurality of light emitting units, the target group of light emitting units comprising a portion of light emitting units in the plurality of light emitting units;
• the target group of light emitting units satisfy:
• |P1i−P2i|≤Qi, P1i denoting an ith parameter in n parameters that one light emitting unit in the target group of light emitting units corresponds to, 1≤i≤n, P2i denoting an ith parameter in n parameters that another light emitting unit in the target group of light emitting units corresponds to, and Qi denoting a threshold of the ith parameter;
• and
• the n parameters that the light emitting unit corresponds to comprise:
• chrominance, luminance and wavelength of light emitted by a first target structure under the target voltage, and the first target structure comprises the light bead and the fluorescent film, wherein a threshold of the chrominance is 0.005, and a threshold of the luminance is 0.25;
• providing j printed circuit boards;
• disposing the plurality of light emitting units in each group of light emitting units in the target group of light emitting units on one printed circuit board in the j printed circuit boards;
• and
• forming an isolation structure configured to isolate any two adjacent light emitting units on each of the j printed circuit boards to form j light bars, wherein the isolation structure comprises silica gel and titanium dioxide, and a surface of the isolation structure facing towards any light emitting unit is a reflection surface.