Display device having first and second offsetting transfer-connections connected between driving electrodes and wiring lines and bent respectively in different directions to adjust wiring line resistances
View Patent ↗The present invention is directed to the provision of a display apparatus that can achieve an improvement in display quality by adjusting the wiring resistance ratio of wiring lines. The display apparatus ( 1, 100 ) according to the present invention comprises a first substrate ( 3 ), a second substrate ( 3 ), and a seal member ( 4 ), wherein first driving electrodes ( 11 - 1 to 11 - 5 ) are electrically connected at first transfer-connection positions (T 1 to T 5 ) to first wiring lines ( 14 - 1 to 14 - 5 ) via the seal member, and second driving electrodes are electrically connected at second transfer-connection positions (T 6 to T 10 ) to second wiring lines ( 14 - 2 ) via the seal member, the first transfer-connection positions are provided at positions respectively offset in a first direction from the extended lines of the respective first driving electrodes, and the second transfer-connection positions are provided at positions respectively offset from the extended lines of the respective second driving electrodes in a second direction which is different from the first direction.
1. A display apparatus comprising:
a first substrate having a first driving electrode and a second driving electrode;
a second substrate having a first wiring line and a second wiring line; and
a seal member for facing said first substrate and said second substrate each other with a gap filled with an electro-optical conversion material therein, and said seal member has electrical conductivity, wherein
said first and second driving electrodes are formed substantially straight across a display area,
said first driving electrode having a first bent portion which is located outside said display area,
said first driving electrode is electrically connected at a first transfer-connection position to said first wiring line,
said second driving electrode having a second bent portion which is located outside said display area,
said second driving electrode is electrically connected at a second transfer-connection position to said second wiring line, and
said first transfer-connection position is from an extended line of said first driving electrode in a first direction by said first bent portion and said second transfer-connection position is offset from an extended line of said second driving electrode in a second direction, which is different from said first direction, by said second bent portion so as to adjust the wiring resistance of said first and second wiring lines.
2. The display apparatus according to claim 1 , wherein
said first wiring line is located along a first side of said second substrate outside of said display area,
said second wiring line is located along a second side of said second substrate outside of said display area, said second side being opposite to said first side,
said first transfer-connection position is located in a portion along said first side, and
said second transfer-connection position is located in a portion along said second side.
3. The display apparatus according to claim 2 , wherein
said second substrate has an extended portion extending beyond said first substrate,
said first wiring line and said second wiring line are routed from said extended portion into an area where said electro-optical conversion material is placed,
said first driving electrode located nearer to said extended portion is electrically connected at said first transfer-connection position to said first wiring line, and
said first transfer-connection position is located offset from the extended line of said first driving electrode in a direction away from said extended portion.
4. The display apparatus according to claim 2 , wherein
said second substrate has an extended portion extending beyond said first substrate,
said first wiring line and said second wiring line are routed from said extended portion into an area where said electro-optical conversion material is placed,
said second driving electrode located farther from said extended portion is electrically connected at said second transfer-connection position to said second wiring line, and
said second transfer-connection position is located offset from the extended line of said second driving electrode in a direction toward said extended portion.
5. The display apparatus according to claim 1 , wherein
the wiring resistance per unit length of said first or said second driving electrode is smaller in a portion thereof extending from said display area to said first or said second transfer-connection position than in a portion thereof located within said display area.
6. The display apparatus according to claim 1 , wherein
electrode width of said first or said second driving electrode is smaller in a portion thereof extending from said display area to said first or said second transfer-connection position than electrode width thereof located within said display area.
7. The display apparatus according to claim 1 , wherein
said seal member contains electrically conductive particles.
8. A display apparatus comprising:
a first substrate having a first driving electrode group containing a plurality of driving electrodes and a second driving electrode group containing a plurality of driving electrodes;
a second substrate having a first wiring line group containing a plurality of wiring lines and a second wiring line group containing a plurality of wiring lines; and
a seal member for facing said first substrate and said second substrate each other with a gap filled with an electro-optical conversion material therein, and said seal member has electrical conductivity, wherein
said plurality of driving electrodes contained in said first driving electrode group are electrically connected at a plurality of first transfer-connection positions to respective ones of said plurality of wiring lines contained in said first wiring line group,
said plurality of driving electrodes contained in said second driving electrode group are electrically connected at a plurality of second transfer-connection positions to respective ones of said plurality of wiring lines contained in said second wiring line group, and
said plurality of driving electrodes contained in said first driving electrode group respectively having bent portions, by which said transfer-connection positions are respectively offset in a first direction from extended lines of said plurality of driving electrodes contained in said first driving electrode group and said plurality of driving electrodes contained in said second driving electrode group respectively having bent portions, by which said transfer-connection positions are respectively offset in a second direction, which is different from said first direction, from extended lines of said plurality of driving electrodes contained in said second driving electrode group so that the wiring resistance of said plurality of wiring lines contained in said first wiring line group and the wiring resistance of said plurality of wiring lines contained in said second wiring line group changes at a substantially constant rate.
9. The display apparatus according to claim 8 , wherein
the bent portions of said plurality of driving electrodes contained in said first driving electrode group have substantially the same bend angle, and
the bent portions of said plurality of driving electrodes contained in said second driving electrode group have substantially the same bend angle.
10. A display apparatus comprising:
a first substrate having a first driving electrode group containing a plurality of driving electrodes and a second driving electrode group containing a plurality of driving electrodes;
a second substrate having a first wiring line group containing a plurality of wiring lines and a second wiring line group containing a plurality of wiring lines; and
a seal member for facing said first substrate and said second substrate each other with a gap filled with an electro-optical conversion material therein, and said seal member has electrical conductivity,
wherein said plurality of driving electrodes contained in said first driving electrode group are electrically connected at a plurality of first transfer-connection positions to respective ones of said plurality of wiring lines contained in said first wiring line group,
said plurality of driving electrodes contained in said second driving electrode group are electrically connected at a plurality of second transfer-connection positions to respective ones of said plurality of wiring lines contained in said second wiring line group, and
said plurality of driving electrodes contained in said first driving electrode group respectively having bent portions, by which said transfer-connection positions are respectively offset in a first direction from extended lines of said plurality of driving electrodes contained in said first driving electrode group and said plurality of driving electrodes contained in said second driving electrode group respectively having bent portions, by which said transfer-connection positions are respectively offset in a second direction, which is different from said first direction, from extended lines of said plurality of driving electrodes contained in said second driving electrode group so that the wiring resistance of said plurality of wiring lines contained in said first wiring line group and the wiring resistance of said plurality of wiring lines contained in said second wiring line group have substantially the same resistance value.
11. The display apparatus according to claim 10 , wherein
the bent portions of said plurality of driving electrodes contained in said first driving electrode group have respectively different bend angles, and
the bent portions of said plurality of driving electrodes contained in said second driving electrode group have respectively different bend angles.