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Control to spectrum content in self-luminescence display

A display, self-illuminating technology, used in static indicators, cathode ray tube indicators, instruments, etc.

Inactive Publication Date: 2009-05-20
AVAGO TECH ECBU IP (SINGAPORE) PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, its pixel cells produce or filter color, but require a backlight to illuminate its color

Method used

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  • Control to spectrum content in self-luminescence display
  • Control to spectrum content in self-luminescence display
  • Control to spectrum content in self-luminescence display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Unlike transmissive displays such as LCDs, pixel units of self-emissive displays such as OLED displays and PDPs are capable of generating colors and illuminating the colors. Typically, multiple (or groups of) pixel cells will be used to form the color of a single image pixel (ie, a point in the displayed image). Typically, a set of pixel cells will take the form of red, green, and blue (RGB) pixel cells.

[0012] During manufacturing or testing, the pixel cells of an emissive display can be calibrated so that when programmed with the same color information, the same colored pixel cells produce a color of the same hue and intensity. In the case of a group of RGB pixel units, by changing the intensity ratio produced by each pixel unit in the group, the color produced by such a group of pixel units can be changed; and by increasing or decreasing the The intensity of all pixel units can change the intensity of the color produced by such a group of pixel units. The intensi...

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PUM

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Abstract

A self-emissive display may comprise a plurality of self-emissive pixel elements, a plurality of photosensors, and a control system. The photosensors are interspersed with the pixel elements to measure light that is emitted by the pixel elements. The control system is coupled to the photosensors and the pixel elements to 1) compare the light measurements to one or more spectral references, 2) set drive signal reference values in response to the comparisons, and 3) generate dynamic pixel element drive signals based on the reference values. A method for calibrating spectral content of a self-emissive display comprises causing at least some of a plurality of self-emissive pixel elements to produce light. The light is then measured and compared to one or more spectral references. In response to these comparisons, drive signal reference values are set. Dynamic pixel element drive signals are then generated based on the reference values.

Description

technical field [0001] The present invention relates to the control of spectral content in displays, and more particularly, the present invention relates to the control of spectral content in self-illuminating displays. Background technique [0002] One common type of display used, for example, in applications such as computer systems, handheld electronic devices, signage, and televisions is a liquid crystal display (LCD). LCDs are "transmissive" displays. That is, its pixel cells produce or filter color, but require a backlight to illuminate its color. [0003] Plasma Display (PDP) and Organic Light Emitting Diode (OLED) displays differ from LCDs in that they are both "self-illuminating." That is, its pixel cells not only produce color, but also illuminate its color. The benefit of PDPs, OLEDs and other self-emitting display technologies is that the elimination of the backlight sometimes allows these displays to be made thinner and at a lower cost. Self-emissive display...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/02G09G3/22G09G3/20H01L27/32
CPCG09G2320/043G09G2360/147H01L27/3269G09G3/22G09G5/02G09G2320/0693G09G5/06H01L27/3211H10K59/35H10K59/13G09G3/20G09G3/291G09G3/30
Inventor 下西纯雄
Owner AVAGO TECH ECBU IP (SINGAPORE) PTE LTD