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Signal processing circuit and method for self-luminous type display

A signal processing circuit and signal processing technology, used in static indicators, electroluminescent light sources, instruments, etc., can solve problems such as poor light utilization efficiency

Active Publication Date: 2005-12-28
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the case of a self-luminous display such as an organic EL display with a color filter attached to a self-luminous material, when light passes through the color filter, part of the light is absorbed by the color filter, so the light utilization efficiency deteriorates

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  • Signal processing circuit and method for self-luminous type display
  • Signal processing circuit and method for self-luminous type display
  • Signal processing circuit and method for self-luminous type display

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Embodiment Construction

[0214] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0215] (i) Description of the first embodiment

[0216] (A) Description of Invention Regarding RGB-RGBW Signal Conversion

[0217] The present invention is directed to a self-luminous display such as an organic EL display in which a color filter is attached to a self-luminous material. In this way, in a self-luminous display, as shown in FIG. 1 , one pixel is constituted by four unit pixels, and three of the unit pixels are arranged to display three primary colors, for example, R (red) and G (green) , B (blue) color filter. The remaining one unit pixel is used exclusively for white (W) display without a color filter.

[0218] In this RGBW arrangement, since there is no color filter in a unit pixel dedicated to white display, the light utilization efficiency is very high. Therefore, for example, when displaying 100% white, instead of emitting the unit pi...

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Abstract

A signal processing circuit of a self-luminous display with four unit pixels of RGBW forming one pixel, wherein: a first part subtracts the minimum value of RGB input signals from each RGB input signal; Parts, according to RGBW signal values ​​for realizing target white when RGB input signals are all maximum values, calculate RGBW signals corresponding to when RGB input signals are all above-mentioned minimum values; and the 3rd part, for the above-mentioned 2nd part For the calculated RGBW signal, the RGBW signal is obtained by adding the subtraction result for each RGB calculated by the first means to the corresponding signal.

Description

technical field [0001] The invention relates to a signal processing circuit and a signal processing method of a self-luminous display. Background technique [0002] Self-emissive displays such as organic EL displays have features such as thinness, light weight, and low power consumption, and are widely used. However, in applications such as mobile phones and digital cameras, there is a high demand for further low power consumption. [0003] In the case of a self-luminous display such as an organic EL display in which a color filter is attached to a self-luminescent material, when light passes through the color filter, a part of the light is absorbed by the color filter, so the light utilization efficiency deteriorates. This low light utilization efficiency hinders the reduction of power consumption. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a signal processing circuit and a signal processing method of a self-luminous display, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30H05B44/00
Inventor 井上益孝森幸夫山下敦弘棚濑晋村田治彦
Owner SANYO ELECTRIC CO LTD