Liquid crystal display and display module thereof
View Patent ↗The present disclosure provides a liquid crystal display and a display module thereof, the display module includes a lower polarizer, a TFT array substrate, a liquid crystal layer, a color filter and a upper polarizer. The display module further includes a metal electrode layer arranged between the color filter and the liquid crystal layer, the metal electrode layer includes a dielectric layer and a metal wire grid layer, and the metal wire grid layer is arranged on a surface of the dielectric layer facing the liquid crystal layer. The metal wire grid layer is used as a common electrode layer of the display module, thus replacing the traditional transparent electrode ITO and avoiding the problem that the transparent electrode ITO easily causes brittle fracture during bending resulting in electrical abnormality and at the same time can improve the contrast of the entire liquid crystal display.
1. A display module, comprising a lower polarizer, a TFT array substrate, a liquid crystal layer, a color filter and an upper polarizer, wherein the liquid crystal layer is arranged between the lower polarizer and the upper polarizer, the TFT array substrate is arranged between the lower polarizer and the liquid crystal layer, the color filter is arranged between the liquid crystal layer and the upper polarizer, the display module further comprises a metal electrode layer arranged between the color filter and the liquid crystal layer, the metal electrode layer comprises a dielectric layer and a metal wire grid layer, and the metal wire grid layer is arranged on a surface of the dielectric layer facing the liquid crystal layer, wherein the color filter comprises a black matrix, and a region corresponding to the metal wire grid layer and the black matrix is provided with second wire grid units, each of the second wire grid units comprises a plurality of second metal strips arranged at equal intervals in parallel.
2. The display module according to claim 1 , wherein the color filter comprises a planarization layer, a filter layer and a substrate, the filter layer is arranged between the planarization layer and the substrate, the planarization layer is arranged between the filter layer and the dielectric layer, the filter layer comprises a photoresist arranged on the substrate at intervals and the black matrix arranged between any two adjacent photoresists.
3. The display module according to claim 2 , wherein a region corresponding to the metal wire grid layer and the photoresist is provided with first wire grid units, each of the first wire grid units comprises a plurality of first metal strips arranged at equal intervals in parallel, a polarization direction of each of the first wire grid units is the same as a direction of an absorption axis of the upper polarizer.
4. The display module according to claim 3 , wherein a width of the first metal strip is equal to a width of the second metal strip, and/or a thickness of the first metal strip and a thickness of the second metal strip are 10 nm-100 nm.
5. The display module according to claim 3 , wherein the interval between two adjacent first metal strips in each of the first wire grid units is not equal to the interval between two adjacent second metal strips in each of the second wire grid units.
6. The display module according to claim 3 , wherein material of the first metal strip and the second metal strip are all selected from at least one of Al, Ag or Au.
7. The display module according to claim 3 , wherein the interval between two adjacent first metal strips in each of the first wire grid units is 20˜500 nm, and a duty ratio of each of the first wire grid units is 0.1˜0.9.
8. The display module according to claim 3 , wherein material of the dielectric layer is one of SiO 2 , SiO, MgO, Si 3 N 4 , TiO 2 and Ta 2 O 5 .
9. The display module according to claim 2 , wherein material of the dielectric layer is one of SiO 2 , SiO, MgO, Si 3 N 4 , TiO 2 and Ta 2 O 5 .
10. The display module according to claim 1 , wherein material of the dielectric layer is one of SiO 2 , SiO, MgO, Si 3 N 4 , TiO 2 and Ta 2 O 5 .
11. A liquid crystal display, comprising a backlight module and a display module, wherein the display module is arranged on the backlight module, the display module comprises a lower polarizer, a TFT array substrate, a liquid crystal layer, a color filter and an upper polarizer, the liquid crystal layer is arranged between the lower polarizer and the upper polarizer, the TFT array substrate is arranged between the lower polarizer and the liquid crystal layer, the color filter is arranged between the liquid crystal layer and the upper polarizer, the display module further comprises a metal electrode layer arranged between the color filter and the liquid crystal layer, the metal electrode layer comprises a dielectric layer and a metal wire grid layer, and the metal wire grid layer is arranged on a surface of the dielectric layer facing the liquid crystal layer, wherein the color filter comprises a black matrix, and a region corresponding to the metal wire grid layer and the black matrix is provided with second wire grid units, each of the second wire grid units comprises a plurality of second metal strips arranged at equal intervals in parallel.
12. The liquid crystal display according to claim 11 , wherein the color filter comprises a planarization layer, a filter layer and a substrate, the filter layer is arranged between the planarization layer and the substrate, the planarization layer is arranged between the filter layer and the dielectric layer, the filter layer comprises a photoresist arranged on the substrate at intervals and the black matrix arranged between any two adjacent photoresists.
13. The liquid crystal display according to claim 12 , wherein a region corresponding to the metal wire grid layer and the photoresist is provided with first wire grid units, each of the first wire grid units comprises a plurality of first metal strips arranged at equal intervals in parallel, a polarization direction of each of the first wire grid units is the same as a direction of an absorption axis of the upper polarizer.
14. The liquid crystal display according to claim 13 , wherein a width of the first metal strip is equal to a width of the second metal strip, and/or a thickness of the first metal strip and a thickness of the second metal strip are 10 nm-100 nm.
15. The liquid crystal display according to claim 13 , wherein the interval between two adjacent first metal strips in each of the first wire grid units is not equal to the interval between two adjacent second metal strips in each of the second wire grid units.
16. The liquid crystal display according to claim 13 , wherein material of the first metal strip and the second metal strip are all selected from at least one of Al, Ag or Au.
17. The liquid crystal display according to claim 13 , wherein the interval between two adjacent first metal strips in each of the first wire grid units is 20˜500 nm, and a duty ratio of each of the first wire grid units is 0.1˜0.9.