Temperature compensating device used for display

A technology of a temperature compensation device and a temperature compensation unit, which is applied to static indicators, instruments, color signal processing circuits, etc., and can solve problems such as image distortion and a gamma curve shift.

Inactive Publication Date: 2008-12-10
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a temperature compensation device for a display to solve the problem of image distortion caused by a gamma curve shift of the display due to temperature changes

Method used

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  • Temperature compensating device used for display
  • Temperature compensating device used for display
  • Temperature compensating device used for display

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Embodiment Construction

[0033] Please refer to figure 2 , figure 2 It is a schematic diagram of a display 20 according to an embodiment of the present invention. The display 20 can properly process image data to compensate the gamma characteristics displayed by the image according to the temperature change, which includes a receiving terminal IN, a temperature compensation device 200, a timing controller 210, a source driver 220 and a panel 230 . The structure and operation mode of the timing controller 210, the source driver 220 and the panel 230 are the same as figure 1 The timing controller 12 , the source driver 14 and the panel 16 are the same and will not be repeated here. The temperature compensation device 200 can be arranged before the timing controller 210 of the display 20, and the original digital image data SDATA1 is pre-processed, and then output to the timing controller 210; or, the temperature compensation device 200 is arranged between the timing controller 210 and the source B...

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Abstract

In order to solve the deflection problem of the gamma curve of a display caused by temperature change, the present invention provides a temperature compensation device which is used in a display for compensating the gamma curve of the display. The temperature compensation device comprises a temperature sensor, a storage unit and a temperature compensation unit. The temperature sensor is used for detecting the environmental temperature in the display; the storage unit is used for storing a plurality of numerical data; the temperature compensation unit is coupled with the temperature sensor and the storage unit, selects a numerical datum from a plurality of numerical data according to the environmental temperature detected by the temperature sensor, and transforms an original image datum into a compensation image datum through the selected numerical datum.

Description

technical field [0001] The invention relates to a circuit device for a display, in particular to a temperature compensation device for a display, which is used for compensating a gamma curve of the display according to the ambient temperature. Background technique [0002] Liquid crystal displays have the advantages of light weight, low power consumption, and low radiation, so they have been widely used in various portable information products in the market, such as notebook computers (notebooks) and personal digital assistants (personal digital assistants, PDAs). The working principle of the liquid crystal display is to convert the external video signal into a digital signal for image processing, such as gamma correction, image size adjustment, color difference and other image effects, and then convert the digital signal into an analog voltage signal and send it to the panel to drive liquid crystal molecules. As far as gamma correction is concerned, the gamma curve charact...

Claims

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Application Information

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IPC IPC(8): G09G3/36H04N9/69
Inventor 杨仁达林至轩
Owner NOVATEK MICROELECTRONICS CORP
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