Display device and color film substrate thereof

Abstract

The invention relates to the technical field of liquid crystal display and provides a display device and a color-film substrate thereof. A reflecting layer is arranged on the side portion of a color filter, on one hand, light emitted from the side portion of the color filter can be prevented from emitting an adjacent color filter, and the cross color phenomenon is avoided; on the other hand, the light emitted from the side portion of the color filter can be reflected back, the reflected light is emitted out through a light-out face, and therefore the brightness of a side viewing angle is improved, the dim phenomenon of the side viewing angle of the display device can be improved, and the image quality is improved. In addition, a shell is provided with a refraction layer on the side portion of the color filter, the light emitted from the side portion of the color filer is completely reflected back through total reflection of the outer side face of the refraction layer, on the basis that the advantages are achieved, the light can be subjected to dispersion in the refraction process, the color of the final light emitted from the light-out face can be purer, and the saturability of the side viewing angle of the display device is improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, and in particular provides a display device and a color filter substrate thereof. Background technique [0002] In the field of display technology, liquid crystal display panels are widely used in modern digital information equipment due to their advantages of small size, low power consumption, no radiation, and high resolution. As the resolution of products becomes higher and higher, pixels The size of the product is getting smaller and smaller, and the aperture ratio of the product is getting smaller and smaller, which leads to a decrease in the efficiency of light passing through. [0003] In this regard, a solution in the prior art is to increase the aperture ratio by reducing the width of the black matrix 4, such as figure 1 As shown, but the reduction of the width of the black matrix 4 will lead to the generation of side view cross-color phenomenon. Not only that, as the co...

AI Technical Summary

Problems solved by technology

[0002] In the field of display technology, liquid crystal display panels are widely used in modern digital information equipment due to their advantages of small size, low power consumption, no radiation, and high resolution. As the resolution of products becomes higher and higher, pixels The size of the product is getting smaller and smaller, and the aperture ratio of the product is getting smaller and smaller, which leads to a decrease in the efficiency of light passing through

[0003] In this regard, a solution in the prior art is to increase the aperture ratio by reducing the width of the black matrix 4, such as figure 1 As shown, but the reduction of the width of the black matrix 4 will lead to the phenomenon of cross-color in the side view

Not only that, as the color gamut of the product increases, the film thickness of the color filter becomes thicker and thicker, resulting in a longer and farther distance between the light source and the black matrix 4, which further exacerbates the risk of cross-color in the side view

[0004] As for the cross-color phenomenon at the side viewing angle, a current method is to increase the thickness of the black light-absorbing layer on the data signal line 5. By using this method, the light emitted from another pixel is absorbed, which can effectively improve the cross-color phenomenon at the side viewing angle. phenomenon, but this method will reduce the aperture ratio of the pixel, resulting in low brightness of the panel or high power consumption

[0005] In order to prevent the cross-color phenomenon of the side view and increase the aperture ratio of the panel, at present, for ultra-high-definition products (ppi>400), it is often used to increase the thickness of the black matrix 4, combined with figure 2 and image 3 As shown, when the thickness of the BM is increased, the cross-color phenomenon of the side viewing angle will be reduced, and the increase of the BM thickness will not affect the aperture ratio. It is currently widely used in high-resolution products, but when viewed from the side viewing angle, the side viewing angle The light is blocked by the black matrix 4, resulting in low brightness at the side viewing angle, which degrades the picture quality at the side viewing angle

Images