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Image display

A technology of image display and display panel, applied in static indicators, instruments, nonlinear optics, etc., can solve problems such as inability to compensate brightness, and achieve the effect of reducing power consumption

Inactive Publication Date: 2010-09-01
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, even when trying to obtain the original brightness through image processing, the brightness cannot be compensated to a level exceeding the brightness of the light source, such as Figure 20 Part (C) of

Method used

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Examples

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example 1

[0080] Figure 14 is a diagram showing an example of applying the above image display technology to a mobile phone, and is a functional block diagram showing one configuration example of a mobile phone with a One-Seg audiovisual function. Such as Figure 14 As shown, the mobile phone B according to this example includes a display unit 31, a light source 33, a light source control section 35, a video signal processing section 37, an antenna 40, a control section 41 for controlling the entire mobile phone, a radio control section 43, a received data processing section 45 . A video signal generation unit 47 , and an input unit 51 . This configuration is the same as a general mobile phone with One-Seg reception function. However, the input signal from the video signal generating section 47 is input to both the video signal processing section 37 and the control section 41 , and the compensation setting and the input signal output from the control section are input to the video sign...

example 2

[0082] Figure 15 is shown using Figure 14 A view showing an example of a mobile phone. As shown in the diagram on the left, the present example is configured to focus on the fact that power fluctuations, attributable to the Dynamic control of the light sources in the display unit 31 . Since the occurrence of such disturbances is not preferred, as shown in the diagram on the right, a dynamic control of turning off the display unit 31 after detection of an outgoing / incoming communication 55 is provided, i.e. an image-based display technique according to this embodiment function of the control. Unlike the case of watching television, the display in radio communication is based on e-mail, Internet, etc., for example. This type of display does not require as much dynamic control as the display in television reception and the reception of recorded TV programs. Therefore, in this example, a function of turning off the dynamic control function when the necessity of dynamic cont...

example 3

[0084] Next, refer to Figure 16 , an example in which this image display technology is applied to a display unit using an OLED (Organic Light Emitting Diode) as a light source will be described. Figure 16 The shown display unit is a liquid crystal display unit using an OLED as a light source. Basically, this display unit can be used as a display portion of a mobile terminal. In the case of using an OLED as a light source, its lifetime is a problem, and reducing luminance is effective in prolonging the lifetime of the OLED.

[0085] If energy-saving control is performed on the light source of the OLED in the above-described manner, the service life of the light source can be extended. For example, if the peak brightness of the light source of an OLED is reduced by 10%, the reliability cycle of the display panel can be increased by 10%. Of course, this technique is particularly effective in the case of OLEDs, although LEDs or the like can alternatively be used for the light...

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PUM

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Abstract

An image display (A) comprises a display unit (1) such as a liquid crystal panel, a light source (3) such as a backlight, a light source control section (5), a video signal processing section (7) for outputting a signal for controlling the display unit according to an input signal (S1), and a control section (11) for controlling the whole including light source control and video control. The control section (11) has a video analyzing block (15) for analyzing the video on the basis of the input signal (S1), a target value setting block (17) for setting a target value of the intensity of the emission from the light source according to the analysis result (S2), and a controlled variable determining block (21) for determining the control speed of the light source in response to the target value (S3), sending the set luminance (S5) to the light source control section, and outputting a compensation parameter (S4) to the video signal processing section (7). On receiving the luminance set value (S5), the light source control section (5) outputs a light intensity control signal (S6) to the light source. With this, power consumption by image display is reduced, and a technique of displaying an image without any feeling of visual strangeness can be provided.

Description

technical field [0001] The present invention relates to an image display and a control method thereof. Background technique [0002] In recent years, in television units, personal computers, mobile terminals, etc., the importance of image displays on which images including movies are displayed has increased. In particular, non-self-luminous image displays such as liquid crystal displays each utilizing a light source and a liquid crystal panel are generally used at present. Figure 19 is a view showing the most general liquid crystal display technology. Such as Figure 19 As shown, when displaying eg 50% grayscale, the luminance value in the video signal decreases from Y=255 to Y=128, for example, while maintaining 100% light quantity produced by the light source, thus the human eye can perceive to 50% grayscale. [0003] However, by such a general approach, it is difficult to reduce the power consumption of image displays as a whole because power consumption is not saved i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34
CPCG09G2320/0247G09G2360/16G09G3/342G02F2203/30G02F2001/133397G09G3/3413G09G2330/021G09G2320/0653G09G3/3406G02F2001/133601G09G2320/0646G02F1/133397G02F1/133601
Inventor 小山雄辅万羽修大塚浩司
Owner SHARP KK
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