Portable data carrier with a display device having a reflection layer as a separate component and applied separately from the display device
View Patent ↗A card-shaped electronic data carrier, in particular chip card, has a card body ( 19 ) with a recess ( 21 ) located on a top side of the card ( 20 ), which accommodates a display ( 1 ). In a base surface ( 22 ) of the recess a reflection layer ( 23 ) is disposed. The recess ( 21 ) is formed in a multi-step fashion. The contact surfaces ( 6 ) of the display ( 1 ) are directed towards the base surface ( 22 ) of the recess ( 21 ) and rest against countercontact surfaces ( 26 ) on a step of the recess ( 21 ).
1. Method for producing a portable data carrier with a display device, comprising the steps:
providing a semifinished product with conductive paths ( 18 ) disposed in the interior,
producing a recess ( 21 ) in the semifinished product,
uncovering countercontact surfaces ( 26 ) of the conductive paths ( 18 ) in the recess ( 21 ),
separately applying a reflection layer ( 23 ) that is not a component of the display device ( 1 ) onto the base surface ( 22 ) of the recess ( 21 ),
inserting the display device ( 1 ) having no reflection layer component into the recess ( 21 ), so that the display device ( 1 ) together with the separately applied reflection layer ( 23 ) forms a reflective display, and
contacting the countercontact surfaces ( 26 ) with contact surfaces ( 6 ) of the display device ( 1 ).
2. Method according to claim 1 , characterized in that the recess ( 21 ) is formed in a multi-step fashion, the countercontact surfaces ( 26 ) being uncovered on a step ( 25 ) of the multi-step recess ( 21 ) located above the base surface ( 22 ).
3. Method according to claim 1 , characterized in that the contact surfaces ( 6 ) of the display device ( 1 ) and the countercontact surfaces ( 26 ) of the recess ( 21 ) are contacted by means of an anisotropic electroconductive adhesive ( 13 ).
4. Method according to claim 1 , characterized in that the display device ( 1 ) is inserted into the recess ( 21 ) in such a way that it is flush with a surface ( 20 ) of the semifinished product.
5. Method according to claim 1 , wherein gaps between the recess ( 21 ) and the display device ( 1 ) inserted into the recess are sealed with a filling.
6. The method of claim 1 , wherein said portable data carrier with display device is a chip card with display.
7. Portable data carrier with display device, comprising:
a card body with conductive paths disposed in the interior of the card body,
a recess, located on a top side of the card body, which accommodates the display device,
countercontact surfaces, in the recess, which are formed by the conductive paths, which are contacted to contact surfaces of the display device, and which are directed towards the base surface of the recess, and
a reflection layer separately applied onto a base surface of the recess, the reflection layer not being a component of the display device.
8. Data carrier according to claim 7 , characterized in that the recess ( 21 ) is formed in a multi-step fashion, wherein the countercontact surfaces ( 26 ) are formed on a step ( 25 ) of the multi-step recess ( 21 ) disposed between top side of the card body ( 20 ) and base surface ( 22 ) and wherein the display device ( 1 ) has a corresponding step with contact surfaces ( 6 ) formed thereon.
9. Data carrier according to claim 7 , characterized in that the contact surfaces ( 6 ) and countercontact surfaces ( 26 ) are connected with an anisotropic electroconductive adhesive ( 13 ).
10. Data carrier according to claim 7 , characterized in that the display device ( 1 ) is flush with the top side of the card body ( 20 ).
11. The portable data carrier of claim 7 , wherein said portable data carrier with display device is a chip card with display.