CHIPLET DISPLAY DEVICE WITH SERIAL CONTROL
First Claim
1. A digital display apparatus, comprising:
- (a) a display substrate having a display area on a process side of the display substrate;
(b) an array of pixels formed on the display substrate process side in the display area, each pixel including a first electrode, one or more layers of light-emitting material located over the first electrode, and a second electrode located over the one or more layers of light-emitting material, wherein the pixels emit light in response to a current provided through the first and second electrodes;
(c) a plurality of chiplets located on the process side of the display substrate in the display area, each chiplet including a chiplet substrate separate and distinct from the display substrate, an electrode connection pad, and a signal connection pad formed over the chiplet substrate, the electrode connection pad connected to one of the first or second electrodes and wherein each chiplet includes one or more pixel circuits formed in the chiplet and electrically connected to the corresponding electrode connection pad and the corresponding signal connection pad;
(d) means for providing a digital image signal including one or more digital luminance values to the signal connection pad(s) of at least one of the chiplets; and
(e) wherein each pixel circuit includes a digital luminance value converter circuit for converting at least one digital luminance value to a continuously valued analog pixel-driving signal that controls the luminance of the pixel connected to the at least one electrode connector.
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Accused Products
Abstract
A digital display apparatus includes an array of light-emitting pixels, each with a first and second electrode, formed on a display substrate. A plurality of chiplets is located on the display substrate, each chiplet including an electrode connection pad, a signal connection pad, and a pixel circuit. The electrode connection pad is connected to one of the first or second electrodes. Each chiplet includes one or more pixel circuits formed in the chiplet and electrically connected to the corresponding electrode and signal connection pads. A digital image signal is provided to the signal connection pad(s) of at least one of the chiplets. Each pixel circuit converts at least one digital image signal value to a continuously valued analog pixel-driving signal that controls the luminance of a pixel. The display provides higher-performance pixel circuits with digital control resulting in improved image quality.
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Citations
11 Claims
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1. A digital display apparatus, comprising:
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(a) a display substrate having a display area on a process side of the display substrate; (b) an array of pixels formed on the display substrate process side in the display area, each pixel including a first electrode, one or more layers of light-emitting material located over the first electrode, and a second electrode located over the one or more layers of light-emitting material, wherein the pixels emit light in response to a current provided through the first and second electrodes; (c) a plurality of chiplets located on the process side of the display substrate in the display area, each chiplet including a chiplet substrate separate and distinct from the display substrate, an electrode connection pad, and a signal connection pad formed over the chiplet substrate, the electrode connection pad connected to one of the first or second electrodes and wherein each chiplet includes one or more pixel circuits formed in the chiplet and electrically connected to the corresponding electrode connection pad and the corresponding signal connection pad; (d) means for providing a digital image signal including one or more digital luminance values to the signal connection pad(s) of at least one of the chiplets; and (e) wherein each pixel circuit includes a digital luminance value converter circuit for converting at least one digital luminance value to a continuously valued analog pixel-driving signal that controls the luminance of the pixel connected to the at least one electrode connector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification