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Display control method, display control apparatus, liquid crystal display apparatus, display control program, and computer readable recording medium

A display control method and display control technology, applied to static indicators, instruments, etc., can solve the problems of liquid crystal response delay, image confusion, etc.

Inactive Publication Date: 2013-03-06
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the grayscale switching of the image will delay the response of the liquid crystal. Therefore, when switching the brightness of the backlight with the switching of the grayscale of the image, it is necessary to adjust the timing of the liquid crystal response and the timing of switching the brightness of the backlight.
If the above two moments deviate from the proper state, you will see image confusion such as flickering caused by brightness changes

Method used

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  • Display control method, display control apparatus, liquid crystal display apparatus, display control program, and computer readable recording medium
  • Display control method, display control apparatus, liquid crystal display apparatus, display control program, and computer readable recording medium
  • Display control method, display control apparatus, liquid crystal display apparatus, display control program, and computer readable recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0073] (Main structure of display control device)

[0074] image 3 It is a block diagram showing an example of a configuration of a display control device that executes the above-described display control method.

[0075] The display control device 1 has a configuration in which the brightness of the BL unit (backlight) 2 irradiating the liquid crystal display panel with light and the grayscale distribution setting of the liquid crystal display panel are changed according to the grayscale distribution of the image to be displayed. . Here, the BL unit may also include a backlight driver, such as Figure 11 shown.

[0076] More specifically, the display control device 1 includes a first dimming processing unit 3 that controls the BL unit 2 through the first dimming processing, and determines the gradation distribution of the liquid crystal display panel through the second dimming processing. The set second dimming processing unit 4 is the main configuration.

[0077] Outsi...

Embodiment 1-1）

[0103] (Decision and display control during dimming)

[0104] First, as figure 1 As shown, the image data of the image A (low gradation) to be displayed as frame n on the liquid crystal display panel is input to the input image analysis unit 7 . The input image analysis unit 7 analyzes the input image data as described above, and outputs the result to the input image determination unit 8 . The input image determination unit 8 determines that the image A is a dark image based on the analysis result of the input image analysis unit 7 , and outputs the determination result to the BL luminance level determination unit 9 and the grayscale distribution setting determination unit 10 .

[0105] Therefore, the BL luminance level determination unit 9 determines the luminance Γ1 as the BL luminance level corresponding to the low grayscale of the image A, and the grayscale distribution setting determination unit 10 determines the level 1 as the low grayscale corresponding to the image A...

Embodiment 1-2）

[0127] Figure 5 It is an explanatory diagram showing another specific example of the CABC technology using the display control method of the present invention in the case of low temperature.

[0128] In the above-mentioned Example 1-1, attention was paid to controlling the dimming period set for the gradation distribution at low temperature to be shorter than the dimming period set for the gradation distribution at normal temperature. On the other hand, the present embodiment is characterized in that the dimming period of the BL luminance at low temperature is further controlled to be longer than the dimming period of the BL luminance at normal temperature.

[0129] More specifically, as Figure 5 shown, by making the dimming period of BL brightness than figure 2 If it is longer, it is set to (m) frame period so as to be longer than the dimming period of BL luminance at room temperature, for example, by one frame period.

[0130] This is because, especially at low tempera...

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Abstract

The invention provides a display control method, a display control apparatus, a liquid crystal display apparatus, a display control program and a computer readable recording medium. The display control method of the present invention conducts, when gradation of an image to be displayed across two continuous frames changes, a first dimming wherein brightness of a backlight is changed in accordance with the gradation before and after the change, and a second dimming wherein the level of a gradation distribution setting is changed, for a span of a plurality of frames, and controls a second dimming period, which includes at least the timing at which the second dimming was started and the processing time necessary therefor, in accordance with the temperature of a liquid crystal display panel.

Description

technical field [0001] The present invention relates to a liquid crystal display device including a backlight as a light source portion for image display, and to making the brightness of the backlight and the gradation distribution setting (γ setting) of the liquid crystal display based on the gradation of an image to be displayed Display control for changing. Background technique [0002] Although liquid crystal display devices have the advantages of being thin and light and having low power consumption, users' requirements for high image quality and low power consumption are increasing day by day. In particular, trying to achieve low power consumption for mobile electronic devices such as mobile phones and PDAs (Personal Digital Assistants) can prolong the use time after a single charge, so it is more convenient for users. [0003] One of the technologies for realizing the above-mentioned low power consumption is the CABC (Content Adaptive Backlight Control: Dynamic Backl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34
CPCG09G3/2025G09G2320/0247G09G3/2018G09G3/3406G09G2360/16G09G2320/062G09G2320/041G09G3/3611G09G2320/0673
Inventor 齐藤浩二
Owner SHARP KK