Electrophoretic display
View Patent ↗An electrophoretic display includes an electrophoretic display module including an element substrate, a counter substrate disposed on a display side of the element substrate, and an electrophoretic layer held therebetween; a first protective sheet disposed on a counter substrate side of the electrophoretic display module; a second protective sheet disposed on an element substrate side of the electrophoretic display module so as to face the first protective sheet with the electrophoretic display module disposed therebetween; and a frame member disposed between the first and second protective sheets along the periphery thereof so as to surround the electrophoretic display module. The frame member is integrated with the first and second protective sheets by welding the frame member to the first protective sheet and to the second protective sheet.
1. An electrophoretic display comprising:
an electrophoretic display module including an element substrate, a counter substrate disposed on a display side of the element substrate, and an electrophoretic layer held therebetween;
a first protective sheet disposed on a counter substrate side of the electrophoretic display module;
a second protective sheet disposed on an element substrate side of the electrophoretic display module so as to face the first protective sheet with the electrophoretic display module disposed therebetween; and
a frame member disposed between the first and second protective sheets along the periphery thereof so as to surround the electrophoretic display module, the frame member being integrated with the first and second protective sheets by welding the frame member to the first protective sheet and to the second protective sheet.
2. The electrophoretic display according to claim 1 , wherein a space filled with an air layer is provided between the electrophoretic display module and the frame member.
3. The electrophoretic display according to claim 2 , wherein the air layer has a higher pressure than an ambient atmosphere.
4. The electrophoretic display according to claim 1 , further comprising an impact-damping member between the electrophoretic display module and the frame member.
5. The electrophoretic display according to claim 1 , further comprising an impact-damping layer between the first protective sheet and the electrophoretic display module.
6. The electrophoretic display according to claim 1 , further comprising a positioning member that positions the electrophoretic display module between the first and second protective sheets, the positioning member being integrated with the frame member.
7. The electrophoretic display according to claim 1 , further comprising a connection substrate connected to the electrophoretic display module to electrically connect the electrophoretic display module to the outside of the frame member, the connection substrate being disposed so as to extend across the frame member from inside to outside.
8. The electrophoretic display according to claim 7 , wherein the frame member has a through-portion extending therethrough from inside to outside, the connection substrate being disposed so as to extend across the frame member from inside to outside through the through-portion.
9. The electrophoretic display according to claim 8 , further comprising a thermosetting sealing member filling a gap between the connection substrate and the frame member in the through-portion.
10. The electrophoretic display according to claim 8 , wherein the frame member includes:
a first member welded to the first protective sheet and having a first groove constituting part of the though-portion; and
a second member welded to the second protective sheet, integrated with the first member, and having a second groove constituting the though-portion with the first groove.
11. The electrophoretic display according to claim 8 , wherein the through-portion is disposed at a position adjacent to at least one of the first and second protective sheets.
12. The electrophoretic display according to claim 7 , further comprising:
a circuit substrate disposed between the first and second protective sheets outside the frame member, electrically connected to the electrophoretic display module via the connection substrate, and having a drive circuit for the electrophoretic display module; and
a second frame member disposed between the first and second protective sheets so as to surround the circuit substrate.
13. The electrophoretic display according to claim 12 , further comprising a connector connected to the outside of the display, the circuit substrate being electrically connected to the connector.
14. The electrophoretic display according to claim 1 , further comprising:
a circuit substrate disposed between the first and second protective sheets outside the frame member, having a drive circuit for the electrophoretic display module such that the drive circuit can communicate drive signals with the electrophoretic display module, and having a communication unit that communicates the drive signals with the electrophoretic display module without contact therebetween; and
a second frame member disposed between the first and second protective sheets so as to surround the circuit substrate.
15. The electrophoretic display according to claim 7 , further comprising a power supply unit removably disposed on the circuit substrate.
16. The electrophoretic display according to claim 15 , wherein the power supply unit is removably disposed on a side of the circuit substrate opposite the second protective sheet.
17. The electrophoretic display according to claim 16 , wherein the second protective sheet has a lid at a position corresponding to the power supply unit in plan view.
18. The electrophoretic display according to claim 7 , wherein the second protective sheet and the frame member are configured as a single member.