Liquid crystal display panel
The present invention relates to a liquid crystal display panel having a predetermined size, containing a wiring film formed of a metal, an insulating film containing an inorganic substance and a substrate formed of a non-alkali glass, in which the metal has the product of a Young's modulus (E) and a thermal expansion coefficient (α) at room temperature falling within a predetermined range, α of the inorganic substance is smaller than that of the non-alkali glass, the non-alkali glass has E of from 70 GPa to 95 GPa and α of from 32×10 −7 to 45×10 −7 (1/° C.) in which E and α satisfies a predetermined formula, and has a predetermined composition.
1. An active matrix drive-type liquid crystal display panel, comprising
a substrate of a non-alkali glass,
a wiring film comprising a metal formed on at least one surface of the substrate of the non-alkali glass, and
an insulating film comprising an inorganic substance formed on a surface of the wiring film,
wherein
the wiring film has a thickness of 0.1 μm or larger,
the insulating film has a thickness of 100 nm or larger,
the substrate has a long side of 1,800 mm or larger, a short side of 1,500 mm or larger, and a thickness of 0.5 mm or smaller,
the metal has a product of a Young's modulus and a thermal expansion coefficient at room temperature of from 10,000×10 −7 GPa/° C. to 25,000×10 −7 GPa/° C.,
the inorganic substance of the insulating film has an average coefficient of thermal expansion at a temperature of 50° C. to 350° C. smaller than that of the non-alkali glass,
the non-alkali glass has a Young's modulus E of from 84 GPa to 95 GPa and an average coefficient of thermal expansion a at a temperature of 50° C. to 350° C. of from 32×10 −7 /° C. to 45×10 −7 /° C.,
the Young's modulus E and the average coefficient of thermal expansion a of the non-alkali glass satisfy formula (1):
1377≥20α+7E≥1310 (1),
wherein a unit of α is 10 −7 /° C. and a unit of E is GPa, and
the non-alkali glass comprises, in terms of mol % on the basis of oxides:
SiO 2
66 to 74,
Al 2 O 3
10 to 12.8,
B 2 O 3
0.1 or more and less than 3.0,
MgO
2 to 10,
CaO
3 to 11,
SrO
0.1 to 10,
BaO
0 to 5, and
ZrO 2
0 to 2,
wherein Al 2 O 3 ×MgO/(MgO+CaO+SrO+BaO) is 5.5 or more.
2. The liquid crystal display panel according to claim 1 ,
wherein the non-alkali glass comprises, in terms of mol % on the basis of oxides:
B 2 O 3 0.1 to 1.5, and
wherein MgO/(MgO+SrO) is 0.69 or more.
3. The liquid crystal display panel according to claim 2 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−13.1×SiO 2 −7.5×Al 2 O 3 −15.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
4. The liquid crystal display panel according to claim 2 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
5. The liquid crystal display panel according to claim 2 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
6. The liquid crystal display panel according to claim 2 , which is obtained at a maximum temperature of 450° C. or lower.
7. The liquid crystal display panel according to claim 1 ,
wherein the non-alkali glass comprises, in terms of mol % on the basis of oxides:
SrO 4.0 to 10, and
BaO 1.0 to 5.
8. The liquid crystal display panel according to claim 7 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−13.1×SiO 2 −7.5×Al 2 O 3 −15.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
9. The liquid crystal display panel according to claim 7 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
10. The liquid crystal display panel according to claim 7 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
11. The liquid crystal display panel according to claim 7 , which is obtained at a maximum temperature of 450° C. or lower.
12. The liquid crystal display panel according to claim 1 ,
wherein the non-alkali glass comprises, in terms of mol % on the basis of oxides:
SrO 0.1 to 2.0, and
BaO 0 to 1.0.
13. The liquid crystal display panel according to claim 12 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−13.1×SiO 2 −7.5×Al 2 O 3 −15.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
14. The liquid crystal display panel according to claim 12 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
15. The liquid crystal display panel according to claim 12 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
16. The liquid crystal display panel according to claim 12 , which is obtained at a maximum temperature of 450° C. or lower.
17. The liquid crystal display panel according to claim 1 ,
wherein MgO+CaO+SrO+BaO is 19.0 or more.
18. The liquid crystal display panel according to claim 17 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−13.1×SiO 2 −7.5×Al 2 O 3 −15.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
19. The liquid crystal display panel according to claim 17 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
20. The liquid crystal display panel according to claim 17 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
21. The liquid crystal display panel according to claim 17 , which is obtained at a maximum temperature of 450° C. or lower.
22. The liquid crystal display panel according to claim 1 ,
wherein the non-alkali glass comprises, in terms of mol % on the basis of oxides:
SiO 2 68.0 to 74, and
BaO 0 to 3.6.
23. The liquid crystal display panel according to claim 22 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−13.1×SiO 2 −7.5×Al 2 O 3 −15.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
24. The liquid crystal display panel according to claim 22 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
25. The liquid crystal display panel according to claim 22 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
26. The liquid crystal display panel according to claim 22 , which is obtained at a maximum temperature of 450° C. or lower.
27. The liquid crystal display panel according to claim 1 ,
wherein the non-alkali glass comprises, in terms of mol % on the basis of oxides:
MgO 2 to 8.0, and
SrO 0.1 to 4.0, and
wherein MgO/(MgO+CaO+SrO+BaO) is 0.4 or more.
28. The liquid crystal display panel according to claim 27 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−13.1×SiO 2 −7.5×Al 2 O 3 −15.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
29. The liquid crystal display panel according to claim 27 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
30. The liquid crystal display panel according to claim 27 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
31. The liquid crystal display panel according to claim 27 , which is obtained at a maximum temperature of 450° C. or lower.
32. The liquid crystal display panel according to claim 1 , wherein the non-alkali glass has a composition in terms of mol % on the basis of oxides, satisfying the relationship of:
759−130.1×SiO 2 −7.5×Al 2 O 3 −150.5×B 2 O 3 +9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≥0.
33. The liquid crystal display panel according to claim 1 , wherein the metal is selected from the group consisting of copper, aluminum and molybdenum.
34. The liquid crystal display panel according to claim 1 , wherein the inorganic substance is selected from the group consisting of silicon nitride, silicon oxide and silicon oxynitride.
35. The liquid crystal display panel according to claim 1 , which is obtained at a maximum temperature of 450° C. or lower.
36. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 1 .
37. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 2 .
38. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 7 .
39. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 12 .
40. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 17 .
41. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 22 .
42. A substrate formed of a non-alkali glass used in the liquid crystal display panel described in claim 27 .