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Problems solved by technology
However, OGS has encountered a problem in terms of appearance. OGS uses a photoresist frame material. When making a white cover plate, because white itself does not absorb light, most of the light will be scattered by pigment particles (see figure 1 ), so the white photoresist has poor shielding ability. In order to achieve the same optical effect as the black photoresist, the thickness of the white photoresist must be at least 20um, or an additional layer of 1-2um thick black photoresist is added, so that It will easily lead to ITO or metal disconnection during climbing, affecting product functions
Therefore, OGS products using white photoresist have not yet appeared
Method used
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preparation example Construction
[0031] The specific preparation steps are mastered by those skilled in the art, such as mechanically opening and separating the non-white pigment particle clusters into isolated primary particles of a specific size, so that the entire surface of each particle can be contacted, and then the above-mentioned pigment particles Put it in the white liquid pigment, make its surface covered by the white pigment, and then dry to form composite pigment particles, and then go through the conventional pigment grinding and dispersion process to obtain the composite white pigment of the present invention.
[0032] Preferably, the photoresist material includes the following components in parts by weight: 5-15 parts of photosensitizer, 5-15 parts of dispersant, 50-80 parts of solvent, and 5-15 parts of composite white pigment.
[0033] More preferably, the photoresist material includes the following components in parts by weight: 8-12 parts of photosensitizer, 8-12 parts of dispersant, 60-70 p...
Embodiment 1
[0047] This embodiment provides a composite white pigment (round shape), which includes an inner core 1-1 made of black pigment, and an outer layer 1-2 made of white pigment covering the inner core 1-1.
[0048] Such as figure 2 As shown, after the composite white pigment obtained in this embodiment is used in a photoresist material, the absorption rate of light can be significantly improved and the transmittance of light can be reduced due to the use of a specific composite white pigment. and figure 1 By comparison, it can be seen that part of the light passing through the specific white pigment is absorbed by the wrapped black pigment, and part of it is reflected. After multiple paths, only a small part of the light can pass through the surface, which greatly improves the material's light sensitivity. Covering.
Embodiment 2
[0050] This embodiment provides a composite white material. Compared with Embodiment 1, the only difference is that in this embodiment, the particle size of the inner core 1-1 is 0.08 μm, and the thickness of the outer layer 1-2 is 0.02 μm.
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Abstract
The invention relates to the field of liquid crystal display, in particular to a composite white pigment and a photoresist material. The composite white pigment comprises an inner core prepared from a non-white pigment, and an outer layer prepared from a white pigment, wherein the photoresist material provided by the invention is prepared from the following components in parts by weight: 5-15 parts of a photosensitizer, 5-15 parts of a dispersing agent, 50-80 parts of a solvent and 5-15 parts of a composite white pigment. Through a double-layer structure design with different colors in inner layer and outer layer, the defects of the original ordinary pure white pigment on a light absorption surface are improved with the nonwhite inner core; improvement of the light absorption properties of the traditional white photoresist material is facilitated; the absorption rate of the white color on the light can be increased; the screening capacity of the photoresist is improved; the color can be relatively uniform; the material can be ideally applied to a one-glass-solution (OGS) frame material; a few of manufacture procedures of a white lithography process can be reduced; and the OD value can be effectively increased.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a composite white pigment, a photoresist material containing the composite white pigment and applications thereof. Background technique [0002] The new generation of OGS (One Glass Solution) products is a potential new direction for the development of capacitive screens. Compared with G / G, it saves a piece of glass substrate and reduces the cost, and the product structure is simpler, with lighter, thinner, The characteristics of better light transmission. However, OGS has encountered a problem in terms of appearance. OGS uses a photoresist frame material. When making a white cover plate, because white itself does not absorb light, most of the light will be scattered by pigment particles (see figure 1 ), so the white photoresist has poor shielding ability. In order to achieve the same optical effect as the black photoresist, the thickness of the white photoresist must be at...
Claims
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Application Information
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