Display with secure decryption of image signals

Abstract

A display securely decrypts an encrypted image signal. Pixels are disposed between the display substrate and cover in a display area, and provide light to a user in response to a drive signal. Control chiplets disposed between the display substrate and cover in the display area are each connected to one or more of the plurality of pixels. A demultiplexer receives the encrypted image signal and routes respective encrypted local image signals to corresponding control chiplets. Each control chiplet includes a decryptor for decrypting its corresponding encrypted local image signal. Thereby, each control chiplet produces respective drive signal(s) for the connected pixel(s).

We claim: 
     
         1 . A display for securely decrypting an encrypted image signal comprising lines of data, the display comprising:
 a) a display substrate having a display area;   b) an encapsulating cover affixed to the display substrate;   c) a plurality of pixels, disposed in the display area, between the display substrate and the encapsulating cover, for providing light to a user in response to a drive signal;   d) a plurality of control chiplets, each of which is disposed in the display area, between the display substrate and the encapsulating cover, each control chiplet comprising a respective chiplet substrate separate and distinct from the display substrate, each control chiplet connected to a plurality of the pixels; and   e) a demultiplexer for receiving the encrypted image signal, and routing each line of data to a corresponding control chiplet, where the line of data is received as an encrypted local image signal;   wherein each control chiplet includes a decryptor operable to decrypt the corresponding encrypted local image signal, whereby the control chiplet is operable to produce respective drive signals for each of the connected pixels; and   wherein the decryptor within each control chiplet decrypts the corresponding encrypted local image signal without reference to other encrypted local image signals distributed to other control chiplets.   
     
     
         2 . The display of  claim 1 , wherein the decryptor performs decryption according to the HDCP standard. 
     
     
         3 . The display of  claim 1 , wherein each control chiplet further comprises a decompressor. 
     
     
         4 . A method of securely decrypting, in a display, an encrypted image signal comprising lines of data, the method comprising:
 a) receiving the encrypted image signal by a demultiplexer;   b) routing, by the demultiplexer, each line of data to a corresponding control chiplet;   c) receiving, by each control chiplet, the corresponding line of data as an encrypted local image signal;   d) decrypting, by a decryptor within each control chiplet, the encrypted local image signal; and   e) producing, by each control chiplet, respective drive signals for each of a plurality of pixels connected to the control chiplet;   wherein all the control chiplets and pixels are disposed in a display area on a display substrate,   wherein the display substrate and an encapsulating cover are attached by a seal thereby forming a sealed area, and   wherein the display area is within the sealed area.   
     
     
         5 . The method of  claim 4 , wherein the decrypting step is performed according to the HDCP standard. 
     
     
         6 . The method of  claim 4 , further comprising a decompressing step performed by each control chiplet.