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Brightness compensation method of two-dimensional display

A flat-panel display, brightness technology, used in static indicators, cathode ray tube indicators, instruments, etc., can solve problems such as flat-panel display errors

Inactive Publication Date: 2007-05-30
MARKETECH INT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] In view of this, the traditional technology cannot reliably and effectively solve the error problem between the actual output brightness and the ideal output brightness of the flat-panel display. Method of Compensating for Luminance Error

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  • Brightness compensation method of two-dimensional display

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Experimental program
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Embodiment Construction

[0039] Since most of the current flat-panel displays are 8-bit grayscale displays, in order to increase the accuracy of image processing, in fact, more than 8 bits are used for image calculation processing. Therefore, if the calculation result is directly output with high bits (ie, integer grayscale) At this time, the accuracy of the calculation will be sacrificed, which will affect the effect of image processing. At this time, for the low-level gray scale (ie, decimal gray scale) that cannot be directly output and displayed, error diffusion or spatial error diffusion ( Error Diffusion) computing technology, as shown in Figure 3, is diffused to other peripheral pixels for display to solve the problem of low output level precision. Since this error diffusion computing technology has been used in many previous technologies, such as: US No. 6,774,873 No. invention patent, and is not the object of protection claimed by the present invention, so the details of the error diffusion ca...

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Abstract

The invention is a compensating method of brightness error applied in plan display, the method is under the fixed light-emitting sustain frequency (fs), a series of gray step signal (Gray) is input into plan display, the real output brilliance Ymea(fs,Gray) is measured, the ideal output brilliance which is corresponding with said input gray step can be calculated based on the linear proportional relation between said input gray step and the ideal output brilliance, then a look-up table is built based on the real output brilliance and ideal output brilliance, the look-up table includes a series of conversion gray step (Gray') and compensating value of brightness error, so with this look-up table, the plan display can output a gray step brilliance which is most approached to the ideal output brilliance Yideal (fs,Gray) to resolve the error problems between the real output brilliance and the ideal output brilliance of plan display effectively.

Description

technical field [0001] The invention relates to a brightness compensation method for a flat-panel display, in particular to a flat-panel display. A comparison table is established based on the actual measured output brightness and the ideal output brightness, so as to adjust the brightness of the flat-panel display through the comparison table. The error is compensated so that the flat panel display outputs a gray scale brightness closest to the ideal output brightness, effectively solving the error problem between the actual output brightness of the flat panel display and the ideal output brightness. Background technique [0002] Generally, the Plasma Display Panel (PDP) controls the brightness of each discharge unit (cell) on the display panel by controlling the number of discharges (Discharge Number), so the relationship between the number of discharges and the brightness of the lights is It is a linear function relationship as shown in the following formula: [0003] Br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G5/10G09G3/20H01J17/49G09F9/313G09G3/288
Inventor 余义盛高旭彬单益嘉许凯翔
Owner MARKETECH INT