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Display device

A display device, liquid crystal display device technology, applied to static indicators, televisions, instruments, etc., can solve the problems of blurred dynamic images and low frequency

Inactive Publication Date: 2008-03-26
HITACHI DISPLAYS +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] On the other hand, as a display that pursues the quality of moving images, there is typically a television receiver, and its frequency characteristic is a standardized signal such as scanning at 60 Hz for an NTSC signal and 50 Hz for a PAL signal. When the frame frequency of the display image generated based on this frequency is set to 60Hz or 50Hz, the dynamic image will be blurred due to the low frequency

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Embodiment 1

[0038] FIG. 1 is a diagram showing the configuration of a liquid crystal display device. This device is a device for displaying 256 gray scales for each RGB color, totaling 16.77 million colors. Reference numeral 101 is input display data of 8 bits each, a total of 24 bits constituting RGB, and reference numeral 102 is an input signal group. The input signal group 102 includes a vertical synchronizing signal Vsync specifying a frame period (a period during which one screen is displayed), a horizontal synchronizing signal Hsync specifying a horizontal period (a period during which one line of text is displayed), and a display timing signal DISP specifying an effective period of display data. , and a reference clock signal DCLK synchronized with the display data.

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Abstract

The present invention reduces moving image blurring in a hold-response-type display device. 1 frame is divided into 3 fields. Assuming the gradation-brightness characteristic of a first field as 1 g, the gradation-brightness characteristic of a second field as 2 g, and the gradation-brightness characteristic of a third field as 3 g, the third field is set at an initial stage or at a final stage of the frame. Due to such setting, the moving image blurring can be effectively reduced up to the relatively high brightness.

Description

technical field [0001] The present invention relates to a hold-type display device such as a liquid crystal display device and an organic EL display, and particularly to a display device suitable for displaying moving images. Background technique [0002] When classifying display devices particularly from the viewpoint of moving image display, they are roughly classified into impulse-response displays and hold-response displays. An impulse-response display is a type in which the luminance response decreases immediately after scanning, as in the light-emitting characteristics of a picture tube, and a hold-response display is a type that maintains the brightness based on display data until the next scan, like a liquid crystal display. . [0003] As a feature of a display that remains responsive, good display quality without flicker can be obtained for still images, but there is a problem that the surroundings of moving objects appear blurred for moving images, that is, moving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14G02F1/133
CPCG09G3/2092G09G2310/061G09G2360/16G09G2360/18G09G2320/106G09G3/2025G09G2320/0261G09G2320/0271G09G3/20G09G3/30G09G3/36
Inventor 盛育子小野记久雄
Owner HITACHI DISPLAYS
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