×

Touch screen assemblies for electronic devices

  • US 8,907,871 B2
  • Filed: 03/15/2012
  • Issued: 12/09/2014
  • Est. Priority Date: 03/15/2012
  • Status: Active Grant
First Claim
Patent Images

1. A touch screen assembly for an electronic device, the touch screen assembly comprising:

  • a sealing glass comprising ion-exchange strengthened glass having a first coefficient of thermal expansion CTE1, and a plurality of touch sensor electrodes formed on at least an underside of the sealing glass opposite a face of the sealing glass;

    a backplane glass comprising ion-exchangeable glass having a device surface, an underside and a second coefficient of thermal expansion CTE2, wherein CTE2 is within +/−

    15.0×

    10

    7


    C. of CTE1 and the device surface of the backplane glass is bonded and hermetically sealed to the underside of the sealing glass with a frit seal, the frit seal enclosing a device area between the underside of the sealing glass and the device surface of the backplane glass;

    an array of metal oxide thin film transistors deposited on the device surface of the backplane glass in the device area;

    wherein the array of metal oxide thin film transistors have a third coefficient of thermal expansion CTE3 which is within +/−

    15.0×

    1031 7

    C. of CTE2; and

    an array of OLED devices formed over the array of metal oxide thin film transistors in the device area on the device surface of the backplane glass.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×