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Image display device, display control device, image processing device, program, and recording medium

A technology of an image display device and an image processing device, which can be applied to static indicators, instruments, etc., and can solve the problem of uneven brightness or color of displayed images.

Inactive Publication Date: 2022-04-15
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there may be unevenness in brightness or color in the displayed image

Method used

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  • Image display device, display control device, image processing device, program, and recording medium
  • Image display device, display control device, image processing device, program, and recording medium
  • Image display device, display control device, image processing device, program, and recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0048] figure 1 An image display device according to Embodiment 1 of the present invention is shown. The image display device according to Embodiment 1 includes an image display 2 and a display control device 3 . The display control device 3 has an image processing device 4 , a light emitter 5 , and a temperature measuring device 6 for control.

[0049] The image display 2 is constituted by a display having a display panel in which red, green, and blue LEDs (Light Emitting Diodes: Light Emitting Diodes) are arranged. For example, a combination of red, green, and blue LEDs constitutes one light-emitting element, and a plurality of such light-emitting elements are regularly arranged as pixels in a matrix to form a display panel. For example, each light-emitting element is a light-emitting element called a 3in1LED light-emitting element in which a red LED chip, a green LED chip, and a blue LED chip are provided in one package.

[0050] Both or one of the luminance and the colo...

Embodiment approach 2

[0232] Figure 11 The configuration of an image display device according to Embodiment 2 of the present invention is shown. Figure 11 The shown image display device has a display control device 3b. Display control device 3b with figure 1 The display control device 3 is roughly the same. However, an image processing device 4 b is provided instead of the image processing device 4 . image processing device 4b with figure 1 The image processing device 4 is substantially the same. However, it is not set figure 1 The measured temperature storage unit 13 and the estimated temperature storage unit 15, instead of figure 1 The temperature estimating part 14 is provided with a temperature estimating part 14b.

[0233] As described above, the temperature estimating unit 14 of Embodiment 1 estimates the temperature of the image display 2 based on the input image data Da, the lighting rate La0, the measured temperature values ​​Ta0 and Ta1 of the light emitter 5 at a plurality of ti...

Embodiment approach 3

[0252] Figure 15 The configuration of an image display device according to Embodiment 3 of the present invention is shown. Figure 15 The illustrated image display device has a display control device 3c. Display control means 3c with figure 1 The display control device 3 is roughly the same. However, the light emitter 5 is not provided, but the image processing device 4 c and the temperature measuring device 6 c for control are provided instead of the image processing device 4 and the temperature measuring device 6 for control.

[0253] Image processing device 4c and figure 1 The image processing device 4 is substantially the same. However, instead of the temperature estimating unit 14 and the temperature compensating unit 16 , a temperature estimating unit 14 c and a temperature compensating unit 16 c are included, and a lighting rate storage unit 18 is further added.

[0254] The control temperature measuring device 6c has one temperature sensor. This one temperature ...

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Abstract

The present invention is provided with: an image processing device (4) that causes an image display (2) to display an image corresponding to input image data (Da); and a temperature measuring device (6) that measures the temperature of the light emitter (5) having the same characteristics as the light emitting element of the image display. The temperature (Te0 (x, y)) of each light-emitting element is estimated on the basis of the lighting rates (La0, Lb1) of the light emitter (5), the measured temperature, and the input image data, and the input image data (Da) is corrected on the basis of the estimated temperature. The temperature is estimated on the basis of the results obtained by learning the relationship between the input image data (Da), the lighting rate (La0) of the light emitter (5), and the temperature measurement value (Ta0), and the temperature measurement value (Tf (xd, yd)) of the light-emitting element specified in advance in the image display. Even if a temperature sensor is not provided for each light-emitting element, at least one of the brightness and the color of the light-emitting element caused by a temperature change can be compensated.

Description

technical field [0001] The present invention relates to an image display device, a display control device, and an image processing device. The present invention also relates to programs and recording media. In particular, the present invention relates to a technique for correcting unevenness in brightness or color of a display panel. Background technique [0002] A display panel is known in which light-emitting elements composed of a combination of red, green, and blue LEDs are arranged as pixels in a matrix. [0003] In general, in light-emitting elements composed of LEDs, the brightness or color of generated light varies. In addition, the brightness or color of the generated light changes according to the temperature. Therefore, unevenness in luminance or color may occur in a displayed image. [0004] Patent Document 1 proposes a method of measuring the temperature of LEDs in a backlight of a liquid crystal display panel using a temperature sensor, and correcting image...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/34G09G3/20
CPCG09G3/32G09G2320/041G09G2320/0666G09G2320/0242G09G2330/045G09G2360/16
Inventor 久保俊明
Owner MITSUBISHI ELECTRIC CORP