Display With Localized Backlight Dimming
First Claim
1. A display, comprising:
- an array of display pixels; and
a backlight that provides backlight illumination for the array of display pixels, wherein the backlight comprises an array of backlight elements and wherein each backlight element includes a light-emitting diode and a light-emitting-diode control circuit that controls how much backlight is emitted by the light-emitting diode.
1 Assignment
0 Petitions
Accused Products
Abstract
A display may have an array of display pixels for displaying images for a user. A backlight unit may provide backlight for the display pixels. The backlight unit may have a substrate such as a printed circuit substrate. An array of locally dimmable backlight elements may be mounted on the substrate. The substrate may be mounted against an inner surface of a metal electronic device housing or other support structure in an electronic device. Each backlight element may have a semiconductor package containing a semiconductor die. The semiconductor die may have a light-emitting diode and a light-emitting-diode control circuit. The light-emitting-diode control circuit may have a pair of transistors and a capacitor. One of the transistors may be connected in series with the light-emitting diode. The light-emitting diode control circuit may receive control signals on a gate line terminal and a source line terminal.
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Citations
20 Claims
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1. A display, comprising:
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an array of display pixels; and a backlight that provides backlight illumination for the array of display pixels, wherein the backlight comprises an array of backlight elements and wherein each backlight element includes a light-emitting diode and a light-emitting-diode control circuit that controls how much backlight is emitted by the light-emitting diode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electronic device, comprising:
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an electronic device housing; display layers that display images; and a backlight with an array of locally dimmed backlight elements that provide backlight illumination for the display layers, each backlight element including a light-emitting diode and a light-emitting-diode control circuit. - View Dependent Claims (17, 18)
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19. A display, comprising:
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liquid crystal display layers that display images; and a backlight unit with an array of locally dimmed backlight elements that provide backlight for the liquid crystal display layers, each backlight element including a light-emitting diode and a light-emitting-diode control circuit formed as part of a common semiconductor die in a plastic semiconductor package. - View Dependent Claims (20)
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Specification