Array of thermally conductive elements in an OLED display
First Claim
Patent Images
1. An organic light emitting diode (OLED) display, comprising:
- a back panel;
a front panel substantially parallel to the back panel;
an array of OLED pixels positioned between the front panel and the back panel; and
a plurality of thermally conductive elements positioned between the OLED pixels and the back panel and distributed throughout the array of OLED pixels, the thermally conductive elements provide a path of low thermal resistance from the OLED pixels to the back panel.
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Abstract
An organic light emitting diode (OLED) display includes an array of OLED pixels that generate heat and an array of thermally conductive elements positioned between the OLED pixels and a thermally conductive back panel. In one embodiment of the invention, the thermally conductive elements may be solder joints deposited over cathode contacts and anode contacts at each OLED pixel. The solder joints provide a path of low thermal resistance from the OLED pixels to the back panel. Also, the solder joints may serve as an array of electrical connections from back panel interconnects to the cathode lines and anode lines.
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Citations
29 Claims
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1. An organic light emitting diode (OLED) display, comprising:
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a back panel;
a front panel substantially parallel to the back panel;
an array of OLED pixels positioned between the front panel and the back panel; and
a plurality of thermally conductive elements positioned between the OLED pixels and the back panel and distributed throughout the array of OLED pixels, the thermally conductive elements provide a path of low thermal resistance from the OLED pixels to the back panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An OLED display, comprising:
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a back panel;
a front panel substantially parallel to the back panel;
an array of OLED pixels positioned between the front panel and the back panel, wherein the array of OLED pixels is divided into a plurality of subsets; and
an array of solder joints distributed throughout the array of OLED pixels such that at least one solder joint is positioned between each pixel subset and the back panel, wherein the solder joints dissipate heat from the OLED pixels and at least a portion of the solder joints conduct electrical current to the OLED pixels. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for manufacturing an OLED display, comprising:
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providing an array of OLED pixels on a first surface of a front panel;
forming cathode contacts over at least a portion of the OLED pixels and distributed throughout the array of OLED pixels;
forming solder joints on each cathode contact; and
mounting a back panel over the solder joints and substantially parallel to the front panel so that the solder joints provide a path of low thermal resistance from the OLED pixels to the back panel. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification