KR940012005A - Color styrene (STN) liquid crystal display - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color STN liquid crystal display device. Conventionally, since the wavelengths of R, G, and B light are different, the thicknesses on the R, G, and B color filters are different.

Therefore, the flatness of the protective film, the insulating film, and the alignment film formed on the R, G, and B color filters is poor, so that light scattering occurs and the light transmittance decreases and the contrast decreases.

The present invention improves the flatness of the protective film and the insulating film formed on the R, G, B color filter by making the thickness of the R, G, B color filter constant, and the alignment film formed on the upper glass substrate is applied to the R, G, B color filter. Correspondingly formed in a stripe shape and the tilt angle is formed differently.

Therefore, light scattering is eliminated, thereby improving transmittance and contrast.

Description

Color styrene (STN) liquid crystal display

As this is a public information case, the full text was not included.

1 is a structure diagram of a general color STN liquid crystal display device;

4 is a cross-sectional view of the structure of the STN LC cell of the present invention;

5 is a configuration of the color filter according to the present invention,

6 is an explanatory view of an alignment film tilt angle of the present invention.

Claims (3)

First and second transparent electrodes 7a and 7b formed on the upper and lower glass plates 14 and 6, the upper and lower glass plates 14 and 6, and the second transparent electrodes 7b to apply electric fields. R, G, and B color filters (8) formed on the same layer and having the same thickness, the protective film (10) and the second insulating film (lla) formed on the color filter (8). A second alignment film 12b formed on the insulating film lla to align the liquid crystal, a first insulating film l1a for protecting the second transparent electrode 7a, and a first insulating film l1a formed on the first transparent electrode 7a. The first alignment layer 12a and the first alignment layer 12 are formed in a stripe shape so as to correspond to the R, G and B colors, and the tilt angles θ _SR , θ _{SG, and} θ _SB are different from each other. And a liquid crystal (13) formed between the second alignment layer (12a 12b). The color STN liquid crystal display device according to claim 1, wherein the tilt angle is the tilt angle (θ _SR ) of the R portion <the talt angle (θ _SG ) of the G portion <the tilt angle (θ _SB ) of the B portion. The tilt angle of the part R is the tilt angle (θ _SR ) = 1 ° -5 °, the part G is the tilt angle ((θ _SG ) = 3 ° -7 ° B, the tilt angle ((θ _SB). Color STN liquid crystal display device, characterized in that) = 5 ° -10 °. ※ Note: The disclosure is based on the initial application.