Substrate for connection and display apparatus

1. A substrate for connection electrically connecting a display panel and a signal processing board which includes a circuit to control the display panel, wherein the display panel is provided with a plurality of the driver circuits to drive the display panel, the plurality of the driver circuits are disposed separately in the display panel, the substrate for connection is integrally formed, the substrate for connection comprises variable parts configured to change a distance between connection blocks in a connection terminal pitch direction, between the connection blocks, connection terminals in the connection blocks, the connection blocks positioned by the variable parts are connected to the plurality of driver circuits which are separately disposed, the substrate for connection does not have an active device disposed thereon, and the connection blocks and the plurality of driver circuits are connected in any one of a first form having the connection blocks which are not connected to the plurality of driver circuit between the connection blocks connected to the plurality of driver circuits in a first distance state in which the distance between the connection blocks is shortened by the variable parts, and a second form in which all the connection blocks are connected to the plurality of the driver circuits in a second distance state in which the distance between the connection blocks is elongated more than the first distance by the variable parts.

2. The substrate for connection according to claim 1 , wherein the distance between the connection blocks is configured to be changed by folding or slackening a portion between the connection blocks.

3. The substrate for connection according to claim 2 , wherein the connection blocks extend in a direction perpendicular to a folding direction or a slackening direction of the substrate for connection from an upper side portion of the substrate for connection, and further the substrate for connection is extended in a width direction of the connection blocks by a required amount.

4. The substrate for connection according to claim 2 , wherein a surface layer at the portion of folding or slackening is thinned.

5. The substrate for connection according to claim 2 , wherein a width of the substrate for connection at the folding portion or the slackening portion in a direction perpendicular to the connection terminal pitch direction is narrowed.

6. The substrate for connection according to claim 5 , wherein a connection block not connected to the plurality of driver circuits is provided between two of the connection blocks connected to the plurality of driver circuits.

7. A display apparatus comprising:

the display panel according to claim 1 ;

the signal processing board which includes the circuit to control the display panel according to claim 1 ; and

the substrate for connection according to claim 1 , which is disposed between the display panel and the signal processing board,

wherein a first electrode group on a display panel side and a second electrode group on a substrate for connection side are connected by a conductive member, and

a third electrode group on a signal processing board side and a fourth electrode group on the substrate for connection side are connected by a conductive member or a connector.

8. The display apparatus according to claim 7 , wherein the plurality of driver circuits which drive the display panel are mounted or embedded in the display panel.

9. The display apparatus according to claim 7 , wherein the substrate for connection is folded back at a portion in which the connection blocks are extended.