Bottom mat mask shadow-mask aligned spray-painting method
A technology of shadow mask and bottom layer, which is applied to the field of alignment and spraying of the shadow mask of the bottom pad mask, can solve the problems of liquid slurry leakage, poor adhesion consistency of phosphor powder, reverse ejection of atomized slurry, etc., and achieves a reduction in the number of rebounds , Improve the white field effect, reduce the effect of pollution
Inactive Publication Date: 2011-07-13
NANJING HUAXIAN HIGH TECH CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to solve the poor consistency of phosphor adhesion caused by the uneven distribution of the adsorption magnetic field and the ventilation of the liquid slurry to the small holes of the working shadow mask during the coating process of the three primary colors of the existing large-scale shadow mask type plasma display screen. To solve the problem of tank leakage and reverse ejection of a small amount of atomized slurry with high kinetic energy, a method for aligning and spraying the bottom pad mask shadow mask is proposed
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Embodiment 1
[0036] a. Several groups of positioning holes are set on the corresponding positions of the frame of the glass plate 1 for alignment, the glass plate, the working shadow mask 2, the upper layer color selection mask shadow mask 3 and the lower layer mask shadow mask 4, each group of positioning holes Composed of three alignment holes 5, the distance between the three alignment holes 5 matches the distance between the three primary colors in the grid holes of the working shadow mask 2;
[0037] b. Put a clean surface-treated alignment glass plate 1 on the support frame of the alignment table, and the shadow mask 4 on the bottom layer, the working shadow mask 2 and the color selection mask shadow mask 3 on the upper layer all face the large holes. and the alignment points are placed on the alignment glass plate 1 in sequence;
[0038] c. Six alignment taper pins 6 are matched and inserted into the corresponding alignment holes 5 of the pre-spray base color, and the alignment hole...
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The invention relates to a method for coating by pointing at a bottom pad shadow mask. A magnetic field is formed by the conduction of a shadow mask (4) padded at a bottom layer and by the uniformly distributed rubber absorption magnetic plates (8). The attachment condition of trichromatic fluorescent powder slurry made from rare earth oxide components can be obviously improved along with the improvement of the distribution conformity condition of the magnetic field. The method can reduce the reverse bounce action of a small amount of atomized slurry with great kinetic energy, the decrease ofthe number of bounced slurry grains not only helps prevent a coated fluorescent powder layer from being damaged, but also can reduce pollution to the operation environment. The method has the advantages of compact and smooth finally-formed fluorescent powder layer, large powder coating amount, high brightness and good conformity of light emitting.
Description
technical field [0001] The invention relates to a production process of a shadow mask type plasma display screen, in particular to a process for coating a phosphor layer on the inner wall of a mask shadow mask and a working shadow mask, in particular to a bottom pad mask shadow mask Align the method of spraying. Background technique [0002] The existing shadow mask plasma display screen uses the shadow mask commonly used in the production of color cathode ray tube CRT to replace the barrier ribs with complicated manufacturing process in the existing plasma display panel PDP. The phosphor layers of the three primary colors of the shadow-mask plasma display are coated on the inner wall of the working shadow mask sequentially in an array. To achieve such selective coating, the mask shadow mask must be used to cooperate with the working shadow mask. In the vertical direction, the pitch of the mask shadow mask is consistent with that of the working shadow mask, while the pitch ...
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IPC IPC(8): B05D1/02B05D1/32B05D7/24B05D3/00B05C13/02C03C17/00H01J29/07
Inventor 凌洁朱立锋花进王保平
Owner NANJING HUAXIAN HIGH TECH CO LTD